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
Anna : Sign Language - ASL
Learn American Sign Language easily with Anna
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
1,188 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.
Build your own version
Build Kit
Make this idea yours
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 Anna : Sign Language - ASL: map the core Education 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
Offer a wider range of topics and advanced lessons.
Assumption to check: Limited lesson variety and depth.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a cleaner design with better organization.
Assumption to check: User interface can feel cluttered.
Validate with people who use this workflow before building.
Hypothesis 3
Provide detailed explanations for quiz answers.
Assumption to check: Inconsistent quiz feedback.
Validate with people who use this workflow before building.
Hypothesis 4
Enable offline downloads for lessons.
Assumption to check: No offline access to lessons.
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
Learn American Sign Language easily with Anna ASL – Anna Sign Language is the perfect app to learn American Sign Language step by step. With structured lessons, a complete sign language dictionary, and regular evaluations, you can build real skills and gain confidence. Whether you’re a beginner or looking to improve your ASL level, Anna guides you with a clear, modern, and accessible learning method. Structured ASL Lessons Learn American Sign Language through carefully designed lessons focused on real-life communication. Each lesson helps you understand and remember essential signs. Sign Language Dictionary Search any sign instantly using a built-in ASL dictionary. Watch clear demonstrations, understand meanings, and learn how to use signs in context. Skill Assessments Test your knowledge at the end of each lesson. Short evaluations help you track your progress and reinforce what you’ve learned. Learn Anytime, Anywhere Practice ASL on all your devices and learn at your own pace, wherever you are. Why choose ASL – Anna Sign Language? Learn American Sign Language easily Beginner-friendly and progressive lessons Complete ASL dictionary Lesson evaluations to track your level Designed for long-term learning Start learning American Sign Language ! Privacy Policy : https://lioruby.notion.site/Privacy-Policy-Anna-Sign-Language-3032985deb2e80dca5b6eb256b88ff80 Terms of Use : https://lioruby.notion.site/Terms-of-Use-Anna-Sign-Language-3032985deb2e80c39980e37b752b9e82
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
Axios
Zustand
React Navigation
expo-av
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.
