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.
App Overview
Authenticator - 2FA App
Protect your online accounts with two-factor authentication (2FA) using Authenticator, a reliable way to generate and store secure codes
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
2,425 ratings · Top 15%
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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What's included17 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.
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
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Authenticator - 2FA App: map the core Utilities 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
Implement a more organized folder structure for accounts.
Assumption to check: Users often find it difficult to manage multiple accounts efficiently
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to set custom notification sounds and intervals.
Assumption to check: Limited customization options for notifications
Validate with people who use this workflow before building.
Hypothesis 3
Integrate cloud backup for account data.
Assumption to check: Inadequate backup and recovery options
Validate with people who use this workflow before building.
Hypothesis 4
Optimize loading and rendering of accounts.
Assumption to check: Performance issues with large account lists
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
Protect your online accounts with two-factor authentication (2FA) using Authenticator, a reliable way to generate and store secure codes. Just scan the QR code or enter the details manually to generate a one-time code and access your favorite service. Why Choose Authenticator? - Quick & Easy Setup: Enable 2FA for your account instantly by scanning a QR code - Broad Compatibility: Works with thousands of popular services, making it easy to connect and streamline your login process. - Sleek Design: Features a modern, user-friendly interface that simplifies managing your 2FA codes. Get started with free essentials, and upgrade for full access. Free features include: - Data Breach Monitoring: Check if your personal data has been compromised in the Dark Web. - Basic Password Manager: Securely store a limited number of your most important passwords. With a subscription, you also get: - Unlimited 2FA Accounts: Secure every social, financial, and work account you own without limits. - Unlimited Password Manager: Store unlimited passwords with autofill capabilities. - Premium Security: Access advanced backup and synchronization features. Subscription Information: Payment will be charged to your iTunes Account upon purchase confirmation. Subscriptions automatically renew unless you turn off auto-renewal at least 24 hours before the current period ends. Your account will be charged for renewal within 24 hours before the end of the current period. Manage your subscriptions and disable auto-renewal in your Account Settings. When you use a trial subscription, you will be charged the full subscription price for the selected period after it expires. Please cancel your subscription at least 24 hours before the end of the trial period. This app is not connected to, endorsed by, or affiliated with any third-party platforms or services it is compatible with. Privacy Policy: http://pp.myauthenticator.pro/ Terms of Use: http://tou.myauthenticator.pro/ For support or inquiries, please email us at: [email protected]
Written user reviews are not shown here. Check current App Store reviews >
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.
SUGGESTED BUILD STACK
React Native
Expo
Zustand
react-navigation
expo-secure-store
react-native-qrcode-scanner
BUILD KIT DIFFICULTY
Intermediate
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.
