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
auth. - 2FA Smart Sync
Are you looking for a simple and comfortable 2FA/MFA security solution for your account?
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
6 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/
Preview a sample Build Kit No email needed
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 auth. - 2FA Smart Sync: map the core Developer Tools 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 better account grouping and sorting features.
Assumption to check: Users find it difficult to manage multiple accounts efficiently.
Validate with people who use this workflow before building.
Hypothesis 2
Offer reliable cloud sync options for secure data access.
Assumption to check: Lack of cloud sync causes data loss when switching devices.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to customize display names and themes.
Assumption to check: Limited customization options for account displays.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce tiered pricing with a free trial option.
Assumption to check: Higher pricing compared to similar apps.
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
Are you looking for a simple and comfortable 2FA/MFA security solution for your account? Auth. is a 2FA and OTP management tool for everyone. Works with all Apple personal devices - based on iCloud Keychain technology. Steps: 1. Scan the QR Code 2. Done! You can also add your account via a link from your provider. Available Platform: - iPhone - iPad - Apple Watch - Mac - Safari (Extension) *You can find the minimum OS requirement below. Features: - Unlimited account -- Key Space (Personal, Business, Secret) - Auto-fill (Safari on Mac Only) - Tap to scan (iPhone / iPad Only) - QR Code instant recognization (iPhone / iPad Only) - Copy to clipboard (iPhone / iPad / Mac) / Drag (Mac) - Open with auth. (Support Common URLs) - Customized timeout and auto-lock - Offline running - Store password and safe code and more... Requirement: iCloud and Keychain enabled. Credit: Please visit the "Credit" section in-app.
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
Supabase
Zustand
react-native-qr-scanner
@react-navigation/native
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.
