App Overview

Amex icon

Amex

American Express · Finance

The official American Express App for iPhone allows you to access your Account from anywhere

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
4.9
4,406,910 ratings · Top 5%

Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.

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Build Kit

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A product spec, screen plans, and build steps for your coding agent.

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Combine features and design from your favorite apps.

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What's included16 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

Feature spec

Goal: Send a clear invoice after finishing a job.

  • Add a client, line items, a due date, and payment instructions.
  • Preview the total before exporting a PDF.
  • Keep an editable draft if export fails.

Screen plan

Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.

States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.

Differentiate and validate

Hypothesis: Contractors need faster repeat invoices more than more templates.

First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.

The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.

Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.

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Free quick prompt For a smaller starting point

Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Amex: map the core Finance workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

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Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.

Hypothesis 1

Enable customizable categories for expenses.

Assumption to check: Limited transaction categorization options.

Validate with people who use this workflow before building.

Hypothesis 2

Implement guided onboarding for first-time users.

Assumption to check: Complicated navigation for new users.

Validate with people who use this workflow before building.

Hypothesis 3

Optimize performance and stability under heavy usage.

Assumption to check: Occasional app crashes during high load.

Validate with people who use this workflow before building.

Hypothesis 4

Introduce budget tracking and alerts for users.

Assumption to check: Lack of advanced budgeting features.

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

The official American Express App for iPhone allows you to access your Account from anywhere. Track spending & rewards, find offers, review your balance, pay your bill and enjoy features only available in the Amex App. Touch ID and Face ID login (on supported devices), gives you quick, safe and secure access. Make the most of your Membership with the speed, security and convenience of the mobile Amex® App. SECURE ACCOUNT MANAGEMENT • Enhanced activation experience for you to confirm new Cards and setup your Account. • Activate your Credit Card for Apple Pay in the Amex App, then simply unlock, tap and pay. • Freeze and unfreeze your Credit Card instantly at any time. STAY ON TOP OF YOUR SPENDING • Check your American Express Account balance, pending transactions and sort charges by amount and date. • Go paperless with access to past PDF statements. • Turn on AutoPay to pay your Amex bill automatically from your bank account each month. • Check your spending power. Enter an amount for an expected purchase and you’ll see if it’ll be approved. Approval based on account status at the time of request • Filter transactions to see spending and subtotals for each card on your account. For Basic Card Members Only. PROTECTION WITH REAL-TIME ALERTS • Turn on purchase alerts to be notified when your Credit Card is charged. • Receive instant fraud alerts if suspicious activity is detected. • Never miss a payment with payment due reminders. • Manage all your notifications in the Amex Account tab. EXPLORE REWARDS AND BENEFITS • View your Rewards balance and find ways to use Membership Rewards® points* - from gift cards to credits on your statement. • Use points to cover your eligible charges via a credit on your Account. * • See personalized recommendations for other ways to use points. • Refer a friend and earn rewards when friends and family get an American Express Card through your referral. For eligible Card Members only. AMEX OFFERS * • Discover offers from places you shop, dine, travel and more. • Explore a map of nearby offers. • Get Amex Offers notifications direct to your device. MEMBERSHIP SCREEN* •Benefits apply only to applicable products. AWARD-WINNING SERVICE • We’re here to chat 24/7. Start a chat with us in seconds and revisit conversations any time in the app. We’d love to hear from you! Stay in touch with us using our social media pages: Twitter: @AmericanExpress Facebook: facebook.com/AmericanExpressUS/ Instagram: @americanexpress Send & Split® enhances the way you send money and split purchases with other Venmo and PayPal users, all in the American Express app.* Now you can pay friends with more flexibility and without the standard Venmo or PayPal credit card fee§. You can also seamlessly split your Amex purchases with others and get paid back directly to your Card as a statement credit. Best Part? You’ll be the one to earn the rewards for the purchase you split. Enrollment Requirement. Terms Apply. § PayPal may charge a fee when sending to non-US recipients. The American Express® App and app features are available only for eligible Card accounts in the United States. American Express® prepaid Cards and Cards issued by non-America Express issuers are not eligible. To log in, Card Members must have an American Express user ID and password or create one in the app. Apple, the Apple logo, iPad, and iPhone are trademarks of Apple Inc., registered in the U.S. and other countries. iOS is a trademark or registered trademark of Cisco in the U.S. and other countries and is used under license. App Store is a service mark of Apple Inc. *To see the full Terms and Conditions, copy and paste the following link into your browser and scroll to the bottom of the page: https://amex.co/AmexApp-Terms For J.D. Power 2024 & 2025 award information, visit jdpower.com/awards.

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Screenshots

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Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

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From the Build Kit assessment.

A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.