Step-by-Step Guide: Building a PayPal Clone with Adalo

Building a PayPal clone means tackling some of the most demanding technical challenges in software development: secure user authentication, real-time transaction processing, wallet management, and the expectation that your app works flawlessly across web browsers, iPhones, and Android devices. Traditionally, this requires separate development teams for each platform, months of backend engineering, and significant capital investment before you can test whether your fintech concept resonates with users.

That's where Adalo changes everything for aspiring fintech founders. Adalo is a no-code app builder for database-driven web apps and native iOS and Android apps—one version across all three platforms. AI-assisted building and streamlined publishing enable launch to the Apple App Store and Google Play in days rather than months. This means you can validate your payment app idea and start acquiring users while competitors are still writing code.

Why Adalo Is Perfect for Building a PayPal Clone

Adalo is a no-code app builder for database-driven web apps and native iOS and Android apps—one version across all three platforms, published to the Apple App Store and Google Play. This unified approach is exactly what you need when building a PayPal-style payment application, where consistent functionality across devices isn't just convenient—it's essential for user trust and transaction security.

For a digital wallet app, app store distribution matters enormously. Your users expect their payment app to be instantly accessible from their home screen, complete with real-time push notifications for transaction confirmations, security alerts, and payment requests. By building with Adalo, you create a professional, native experience that rivals established fintech apps—without writing a single line of code or managing separate development teams for each platform.

Creating a PayPal-like payment application traditionally requires extensive backend development, complex security implementations, and separate codebases for web, iOS, and Android platforms. For entrepreneurs and startups looking to enter the fintech space, this means months of development time, significant technical expertise, and substantial investment before even reaching your first user. The combination of user authentication, wallet management, real-time transactions, and cross-platform compatibility makes digital payment apps one of the most challenging projects to tackle.

Adalo, an AI-powered app builder, changes this equation entirely. Build database-driven web apps and native iOS and Android apps from a single codebase—one version across all three platforms. AI-assisted building and streamlined publishing enable launch to the Apple App Store and Google Play in days rather than months. This means you can focus on designing a seamless payment experience and validating your fintech concept while the platform handles the technical complexity of multi-platform deployment.

Why Adalo Works for Building a Payment App

Adalo creates true native iOS and Android apps alongside web apps—all from one build. This makes it particularly well-suited for creating a PayPal-style payment app, where you need secure user databases, real-time transaction tracking, and the ability to reach users wherever they are. With the Adalo 3.0 infrastructure overhaul launched in late 2025, apps run 3-4x faster than before, with modular infrastructure that scales alongside your user base.

For a digital wallet app, native app store distribution is essential. Users expect payment apps to live on their home screens for quick access, and they need push notifications for transaction alerts, payment confirmations, and security updates. With Adalo, you build once and deploy everywhere—giving your users a seamless experience across all their devices while you focus on creating a trustworthy financial tool.

Building a payment app like PayPal might sound impossible without coding experience, but with Adalo's platform, you can create a functional digital wallet application in weeks rather than months. This tutorial walks you through building an app with user authentication, wallet management, money transfers, and transaction history. Publish the same app to web, native iOS, and native Android—all without writing a line of code or rebuilding anything.

Ada, Adalo's AI builder, lets you describe what you want and generates your app. Magic Start creates complete app foundations from a description, while Magic Add adds features through natural language.

Compliance note: Fintech apps have significant regulatory obligations (e.g., money transmission, KYC/AML, sanctions). Plan early with a fintech attorney and, where appropriate, banking partners.

Prerequisites and Initial Setup

Step 1: Create Your Adalo Account and Project

1. Visit Adalo.com and sign up for a free account
2. Click Create New App on your dashboard
3. Choose Mobile App (recommended for payment apps)
4. Name your project (e.g., "PaymentPro" or "QuickPay")
5. Select Start from Scratch or use Magic Start to generate a foundation from a description

Magic Start generates complete app foundations from simple descriptions. Tell it you need a payment app with user wallets and transaction history, and it creates your database structure, screens, and user flows automatically—what used to take days of planning happens in minutes.

Step 2: Configure Your App Settings

1. Open App Settings (gear icon)
2. Set your brand theme:

• Primary: trustworthy tone (blue/green)
• Secondary: complementary accent
• Background: white/light gray

3. Choose a professional, readable font
4. Enable responsive design for different devices
5. Save

Step 3: Set Up Payment Processing Requirements

• Stripe Account: Sign up at Stripe.com
• Test API Keys: Use Stripe test mode while developing
• Security: Review PCI DSS basics for card handling
• Legal: Confirm licensing and program setup with counsel

Using Stripe (or Stripe Connect) can reduce scope, but does not automatically cover licensing/compliance. Validate requirements for your model/jurisdictions.

Building the Database Structure

Adalo's visual database tools make it straightforward to create the relational data structure a payment app requires. With no record limits on paid plans, your database scales as your user base grows—no artificial caps to worry about.

Step 4: Enhance the Users Collection

1. Click the Database icon
2. Open Users
3. Add properties:

• Phone Number (Text)
• Profile Image (Image)
• Account Status (Text: "Active", "Suspended", "Pending Verification")
• KYC Status (Text: "Not Started", "In Progress", "Verified", "Rejected")
• Date of Birth (Date)
• Address (Text)
• Wallet Balance (Number)
• Currency (Text, e.g., "USD")
• Account Created (Date & Time – Automatic)
• Last Login (Date & Time)
• Identity Verification Token (Text — reference from KYC provider)

Don't store SSN digits or ID images in Adalo. Use a compliant identity provider and store only tokens/statuses.

External Collections overview

Step 5: Create the Transactions Collection

1. + Add Collection → Transactions
2. Properties:

• Transaction ID (Text – Auto-Generated)
• Type (Text: "Send", "Receive", "Deposit", "Withdrawal", "Request")
• Amount (Number)
• Currency (Text)
• Status (Text: "Pending", "Processing", "Completed", "Failed", "Cancelled", "Declined")
• Description (Text)
• Recipient Email (Text)
• Sender Email (Text)
• Fee Amount (Number)
• Created Date (Date & Time – Automatic)
• Completed Date (Date & Time)
• Error Message (Text)

Step 6: Create the Payment Methods Collection

1. + Add Collection → Payment Methods
2. Properties:

• Method Type (Text: "Credit Card", "Debit Card", "Bank Account")
• Card Last 4 (Text)
• Card Brand (Text: "Visa", "Mastercard", "Amex", "Discover")
• Expiration Month (Number)
• Expiration Year (Number)
• Is Default (True/False)
• Stripe Payment Method ID (Text)
• Bank Name (Text)
• Account Last 4 (Text)
• Created Date (Date & Time – Automatic)

PCI scope: Use Stripe Elements/Payment Element so card data never touches your servers. Stripe pricing varies by region/method; in the U.S., online card rates commonly start around 2.9% + $0.30 per successful charge.

Step 7: Create the Wallet Transfers Collection

1. + Add Collection → Wallet Transfers
2. Properties:

• Transfer ID (Text – Auto-Generated)
• Amount (Number)
• Status (Text: "Pending", "Completed", "Failed")
• Transfer Type (Text: "User to User", "Add Funds", "Withdraw")
• Created Date (Date & Time – Automatic)
• Notes (Multiline Text)

Step 8: Create the Notifications Collection

1. + Add Collection → Notifications
2. Properties:

• Title (Text)
• Message (Multiline Text)
• Type (Text: "Payment Received", "Payment Sent", "Deposit", "Security Alert")
• Is Read (True/False)
• Created Date (Date & Time – Automatic)
• Action URL (Text)

Step 9: Set Up Database Relationships

• Transactions → Users: Sender (Many-to-One), Recipient (Many-to-One)
• Transactions → Payment Methods: Many-to-One
• Payment Methods → Users: Owner (Many-to-One)
• Wallet Transfers → Users: From User (Many-to-One), To User (Many-to-One)
• Wallet Transfers → Transactions: One-to-One
• Notifications → Users: Recipient (Many-to-One)
• Notifications → Transactions: Many-to-One (optional)

Installing Required Components

Step 10: Install Stripe

1. Open the Adalo Marketplace
2. Install Stripe
3. Configure test keys (pk_test_…, sk_test_…)
4. Plan note: Stripe components are available on paid plans starting at $36/month

Step 11: Install QR Code (Optional)

• Install QR Code Generator (Marketplace) for shareable payment requests

Step 12: Install Charts (Optional)

• Add chart components for transaction graphs, spending analytics, and balance trends

Creating User Authentication and KYC

Step 13: Welcome Screen

• Rename to Welcome
• Logo, headline, subheading
• Buttons: Sign Up, Login
• Footer: Terms and Privacy links

Step 14: Sign Up

• Screen Sign Up
• Form (Users): Full Name, Email, Phone, Password, Confirm Password
• Checkbox for Terms/Privacy
• Create Account:
  • Create User (Wallet Balance = 0; Account Status = "Pending Verification")
  • Send email verification (Zapier/automation)
  • Go to Email Verification

Step 15: Email Verification

• Text: code sent to {email}
• Input: 6-digit code
• Verify:
  • Update Account Status → "Active"
  • Navigate to KYC Information
• Resend Code

Step 16: KYC Information

Use Stripe Identity/Persona (hosted flow). Store tokens/statuses only.

• Collect DOB and address fields (update Logged In User)
• Start Verification → create provider session via backend; save Identity Verification Token; set KYC Status = "In Progress"; open hosted flow
• I've Completed Verification → check result, update KYC Status → next screen

Step 17: Login

• Screen Login with Email + Password
• Forgot Password? → Password Reset
• (Optional) 2FA: integrate Twilio Verify/Firebase Auth and gate sensitive actions with codes

Building the Home Dashboard

Step 18: Home

• Header: profile image, "Hi, {First Name}", settings
• Wallet card: Wallet Balance, currency, Add Funds, Withdraw
• Quick actions: Send Money, Request Money, Add Funds
• Recent Activity: Transactions where Sender = or Recipient = Logged In User; newest first; limit ~5

Step 19: KYC Alert Banner

• If KYC Status ≠ "Verified" → "Complete verification to unlock full features" → Verify Now

Building the Send/Request Flows

Step 20: Send Money

• Recipient search (email) or QR scan (if installed)
• Amount input; show available balance; optional note
• Fee copy: "Fee: ${calc} • Total: ${amount + fee}"

Use Magic Add to quickly add features by describing what you want. For example, type "add a recipient favorites list" and the AI generates the necessary database fields and UI components.

Step 21: Confirm Payment

• Summary: recipient, amount, fee, total
• Security: password/PIN; optional 2FA code
• Confirm & Send:
  • Check balance
  • Create Transaction (Status "Processing")
  • Deduct sender; credit recipient (or move from pending to available)
  • Update Transaction → "Completed"
  • Notify recipient
  • Go to Payment Success

Step 22: Payment Success

• Success state (amount, recipient, Transaction ID, date/time)
• View Receipt, Send Another, Return Home

Step 23: Request Money

• Email, amount, reason
• Send Request → Create Transaction (Type "Request", Status "Pending"); notify target

Step 24: Payment Requests

• List pending requests where Recipient = Logged In User
• Show requester, amount, reason
• Pay (to confirmation) or Decline (Status → "Declined")

Integrating Stripe for Real Payments

Step 25: Add Funds

• Presets + custom amount
• Choose saved card or add new
• Stripe Payment component:
  • Amount = selection
  • Customer Email = user email
  • Save card option enabled
• On success:
  • Increase Wallet Balance
  • Create Transaction (Type "Deposit", Status "Completed")
  • Notify user

Step 26: Payment Methods

Add Payment Method

• Use Stripe Payment Element/card UI (component/webview)
• Save Stripe Payment Method ID, brand, last4; mark first card default

Manage Payment Methods

• List: brand icon, last4, expiry, default badge
• Actions: Set Default, Remove, Add New

ACH: Native Stripe component focuses on cards. For ACH, add Custom Actions with Stripe APIs and potentially integrate Plaid.

Building Withdrawals

Step 27: Withdraw Funds

• Amount input (min, e.g., $10), available balance
• Bank account selector (link bank via Plaid/Stripe)
• Copy: "Payout timing varies by country and bank; in the U.S., standard Stripe payouts are often 2–3 business days."
• Request Withdrawal:
  • Create Transaction (Type "Withdrawal", Status "Processing")
  • Deduct balance
  • Notify user
  • Flip to Completed/Failed via backend webhook

Server-side only: External payouts generally require Stripe Connect and must be initiated on your server.

Step 28: Bank Accounts

• List: bank name, last4, type, verification status
• Link New Bank: Plaid/Stripe flow; support micro-deposits if needed

Implementing Transaction History

Step 29: Transaction History

• Filters: date range, type (All/Sent/Received/Deposits/Withdrawals/Requests), status
• List: icon, counterparty, amount (+/–), date/time, status
• Tap → Transaction Details

Step 30: Transaction Details

• Show: ID, type/status, amount/currency, fee, date/time, counterparty, method, notes
• Actions: Download Receipt (CSV/PDF via integration), Report Issue, Repeat Transaction

Step 31: Search & Export

• Search by recipient/sender email or Transaction ID
• Export CSV (automation/integration)

Building Notifications

Step 32: Notifications Center

• List notifications for Logged In User; newest first
• Each: icon, title, message, time ago, unread indicator
• Tap: mark read; deep link via Action URL when present

Step 33: Push Notifications

1. Enable push in Adalo settings
2. Request permission on first login
3. Triggers:

• Money received: "You received ${Amount} from {Sender}"
• Money sent: "Payment of ${Amount} sent to {Recipient}"
• Deposit complete: "Your deposit of ${Amount} is available"
• Low balance, security alerts

Publishing & push overview

Adding Security Features

Step 34: PIN/Password

• Security Settings: PIN lock for app open/sensitive actions
• Store only a salted hash of PIN (hash on your server)
• Biometrics: Not native for app-level auth; consider third-party components/services or rely on device-level protections

Step 35: Transaction Limits

• Show defaults (e.g., Daily $2,500; Per-Tx $1,000; Monthly $10,000)
• Request Increase → requires full KYC (route to Support/KYC)

Step 36: Activity Log

• List logins (date/time, device, location if available, IP)
• Report Unauthorized Access; Log Out All Devices

Settings and Profile Management

Step 37: Settings Hub

• Account: Profile Info, Change Password, Email Preferences
• Payments: Payment Methods, Bank Accounts, Transaction Limits
• Security: PIN, 2FA (third-party), Activity Log
• Support: Help/FAQ, Contact Support, Terms & Privacy

Step 38: Edit Profile

• Update photo, full name, phone, DOB (lock after verification), address
• Validate and save

Step 39: Change Password

• Current, New (≥ 8), Confirm; strength meter
• On success: send confirmation email

Testing Your Payment App

Step 40: Test Users

• 5–10 users (mix of verified/unverified), varied balances, different payment methods
• Stripe test cards:
  • Success: 4242 4242 4242 4242
  • Declined: 4000 0000 0000 0002
  • 3DS required: 4000 0027 6000 3184

Step 41: Core Flows

• Send Money: balances/notifications/records
• Add Funds: success/failure handling, history
• Requests: create/pay/decline, notifications
• Withdrawals: creation, balance deduction, webhook status updates

Step 42: Security & Edge Cases

• Insufficient funds, invalid emails, expired cards, duplicates
• Validation for negatives/over-limit/special chars/missing fields
• Performance: 100+ transactions, image sizes, error/empty states

Use X-Ray to identify performance issues before they affect users. This AI-powered diagnostic tool highlights potential bottlenecks in your app's data relationships and screen configurations.

Step 43: Preview & Debug

• Web + mobile preview
• Verify visibility rules, fee/balance math, deep links
• Check loading and retry patterns; add clear error toasts

Working Within Platform Capabilities

Step 44: Architecture Considerations

Real-Time: No sockets; use timers (5–10s) to refresh lists. Consider Xano for complex backend logic.

Complexity: Multi-currency and fraud scoring need external APIs/services; use Make/Zapier for orchestration.

Compliance: KYC/AML via external providers; maintain audit trails and retention as required.

Step 45: Refresh Patterns

• Pull-to-refresh on Home/Transactions
• Countdown auto-refresh (~10s) on high-traffic screens
• Show "Last updated" timestamps

Publishing Your Payment App

Step 46: Prepare for Production

• Switch to live keys (Stripe/others)
• Add Terms of Service, Privacy Policy, and (web) Cookie Policy; link in onboarding/footer
• Hardening: no client secrets, TLS-only endpoints, tokens for PII

Step 47: Custom Domain (Web)

• Connect domain in Publishing and enable SSL
• Configure DNS per Adalo docs
• Paid plan required (starting at $36/month with unlimited usage)

Step 48: Publish to Stores

iOS

• Join Apple Developer Program ($99/year)
• Publish → iOS; upload assets/metadata; submit via App Store Connect
• Review times vary (many complete within 24–48 hours, but can take longer)

Android

• Create Google Play Developer ($25 one-time)
• Publish → Android; upload AAB/assets; complete rating & data safety
• Review times vary; can take several days or longer

Web

• Publish → Web; use Adalo subdomain or your custom domain

One build updates all three platforms simultaneously—no need to maintain separate codebases or republish individually. Publishing overview

Step 49: Plan Updates

• Enable manual publishing to control releases
• Cadence: monthly features, weekly fixes as needed, immediate security patches
• Communicate via in-app messages and release notes
• All Adalo plans include unlimited app updates once published

Post-Launch Optimization

Step 50: Monitor Key Metrics

Acquisition (signups, onboarding completion), engagement (DAU/MAU, sends/user, add-funds conversion), retention (D1/D7/D30), financial (gross volume, deposit/withdraw rates, failure rates), technical (errors, latency, webhook success).

Step 51: Gather Feedback

In-app forms, store reviews, analytics/session replays, user interviews.

Step 52: Iterate

Performance (queries, pagination, images), UX (limits UI, request-money flow, QR pay), risk (step-up rules), clarity (fees & timing copy), onboarding (KYC guidance, empty states).

Why Choose Adalo for Payment Apps

• Performance & Reliability: The Adalo 3.0 infrastructure overhaul delivers 3-4x faster app performance. Monitor uptime/incidents at status.adalo.com.
• Stripe Integration: Native Stripe for cards; add ACH via Custom Actions/Stripe APIs/Plaid.
• Unlimited Database: Paid plans have no record caps—your transaction history and user base can grow without hitting artificial limits.
• Cross-Platform: Publish to iOS, Android, and web from one codebase.
• Scale Options: Modular infrastructure scales to serve apps with 1M+ MAU. Use Xano for heavier logic and custom APIs.
• Predictable Pricing: Starting at $36/month with unlimited usage—no App Actions charges or surprise bills. Compare to Bubble's $59/month with Workload Units that can create unpredictable costs.

Additional Resources

• Adalo Database: https://help.adalo.com/database
• External Collections: https://help.adalo.com/integrations/external-collections-with-apis
• Custom Actions: https://help.adalo.com/integrations/custom-actions
• Optimize performance: https://help.adalo.com/performance/optimize-app-performance
• Adalo Marketplace: https://www.adalo.com/marketplace
• Stripe Pricing: https://stripe.com/pricing
• Stripe Testing: https://stripe.com/docs/testing
• Stripe ACH: https://stripe.com/docs/ach
• Stripe Payouts: https://stripe.com/docs/payouts
• Stripe Connect Payouts: https://stripe.com/connect/payouts
• Apple App Review: https://developer.apple.com/app-store/review/
• Google Play (Dev Help): https://support.google.com/googleplay/android-developer/answer/9859152
• Adalo Status: https://status.adalo.com/

Note: Treat this as a prototype. For production money movement and custody, integrate regulated partners, keep sensitive data off the client/app DB (use tokens), initiate payouts server-side, and run full security/compliance reviews before launch.

FAQ

Why choose Adalo over other app building solutions?

Adalo is an AI-powered app builder that creates true native iOS and Android apps alongside web apps. Unlike web wrappers, it compiles to native code and publishes directly to both the Apple App Store and Google Play Store from a single codebase. With the 3.0 infrastructure overhaul, apps run 3-4x faster with unlimited database records on paid plans—no artificial caps on your growth.

What's the fastest way to build and publish an app to the App Store?

Adalo's drag-and-drop interface combined with AI-assisted building through Magic Start and Magic Add lets you go from idea to published app in days. Magic Start generates complete app foundations from descriptions, while Adalo handles the complex App Store submission process—so you focus on features, not certificates and provisioning profiles.

Can I build a payment app like PayPal without coding?

Yes. Adalo provides native Stripe integration for secure payment processing, visual database tools for managing users and transactions, and cross-platform publishing. This tutorial walks through building user authentication, wallet management, money transfers, and transaction history—all without writing code.

What compliance requirements should I consider for a payment app?

Fintech apps have significant regulatory obligations including money transmission licensing, KYC (Know Your Customer), and AML (Anti-Money Laundering) requirements. Consult with a fintech attorney early and consider using services like Stripe Connect to reduce compliance scope. Never store sensitive data like SSN digits directly—use compliant identity providers and store only tokens.

How do I integrate Stripe payments into my Adalo app?

Install the Stripe component from the Adalo Marketplace and configure it with your API keys. The native integration handles card payments securely using Stripe Elements, ensuring card data never touches your servers. For ACH bank transfers, use Custom Actions with Stripe APIs and potentially integrate Plaid for bank account linking.

How much does it cost to build a payment app with Adalo?

Adalo paid plans start at $36/month with unlimited usage and no record limits. This includes publishing to iOS, Android, and web with unlimited app updates. Compare this to Bubble at $59/month with Workload Units that create unpredictable costs, or FlutterFlow at $70/month per user that still requires you to source and pay for a separate database.

Can my payment app scale to handle many users?

Yes. Adalo's modular infrastructure scales to serve apps with 1M+ monthly active users with no upper ceiling. The 3.0 infrastructure overhaul delivers 3-4x faster performance, and paid plans have no database record limits. For complex backend logic, integrate Xano for additional scalability.

What security features should I include in a payment app?

Essential security features include PIN/password protection for sensitive actions, optional two-factor authentication via services like Twilio Verify, transaction limits with KYC-based increases, and activity logs showing login history. Always store only salted hashes of PINs, use tokens instead of raw sensitive data, and implement step-up verification for high-risk transactions.

How long does it take to build a payment app with Adalo?

With Adalo's visual builder and AI-assisted features, you can build a functional payment app prototype in weeks rather than months. Magic Start generates your initial database structure and screens, while the drag-and-drop interface—described as "easy as PowerPoint"—lets you iterate quickly without coding.

Can I add push notifications for transaction alerts?

Yes. Adalo supports push notifications essential for payment apps. Configure automatic notifications for money received, payments sent, deposit completions, low balance alerts, and security warnings. Enable push in your Adalo settings and set up notification triggers within your action workflows.