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
BetterSpeak: AI Language Tutor
BetterSpeak: AI-Powered English Speaking Practice
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
14,588 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 BetterSpeak: AI Language Tutor: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
BetterSpeak: AI-Powered English Speaking Practice Practice English through conversations with an AI tutor. BetterSpeak offers guided speaking activities and AI-generated feedback to support your English learning routine. Whether you’re beginning to learn English or looking for more opportunities to practice, explore everyday topics and work on expressing your ideas in English. PRACTICE WITH AN AI AVATAR Take part in interactive conversations with an AI avatar tutor. Practice answering questions, expressing opinions, and using English in everyday situations. EXPLORE EVERYDAY CONVERSATIONS Practice conversations related to work, travel, and daily life. Use guided activities to explore vocabulary and try different ways of communicating. REVIEW YOUR SPEAKING Receive AI-generated feedback on grammar, pronunciation, and fluency. Review suggestions to identify areas you would like to practice further. PRACTICE TOWARD YOUR GOALS Explore speaking activities based on your learning goals and level. Make time for topics you want to revisit and practice at your own pace. MULTILINGUAL SUPPORT Access guidance in supported languages, including Spanish, Portuguese, Turkish, Italian, German, and French, while practicing English with your AI tutor. BUILD A PRACTICE ROUTINE Set daily speaking goals, collect points, earn badges, and track your practice streaks. Use these tools to organize your learning and return to speaking practice regularly. ENGLISH FOR WORK AND DAILY LIFE Practice introducing yourself, discussing familiar topics, and communicating in workplace situations. BetterSpeak provides opportunities to use English as part of your learning routine. Subscriptions are offered as auto-renewable plans on a weekly, monthly, or yearly basis (pricing may vary by country). Payment will be charged to your Apple ID account at confirmation of purchase. Your subscription will automatically renew unless it is canceled at least 24 hours before the end of the current billing period, and your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage or cancel your subscription at any time through your Apple Account Settings after purchase. If a free trial is offered, any unused portion of the trial period will be forfeited upon purchasing a subscription. CONTACT US Have questions or suggestions? Contact us at [email protected]. Privacy Policy: https://betterspeak.com/privacy Terms of Use: https://betterspeak.com/terms
Written user reviews are not shown here. Check current App Store reviews >
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 gamification elements to boost user interaction.
Assumption to check: Limited user engagement features
Validate with people who use this workflow before building.
Hypothesis 2
Optimize video content for better loading times.
Assumption to check: Poor performance on lower-end devices
Validate with people who use this workflow before building.
Hypothesis 3
Introduce AI-driven recommendations based on user performance.
Assumption to check: Lack of personalized learning paths
Validate with people who use this workflow before building.
Hypothesis 4
Provide instant feedback after quiz submissions.
Assumption to check: Feedback on quizzes is not immediate
Validate with people who use this workflow before building.
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 Navigation
expo-av
BUILD KIT DIFFICULTY
Advanced
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.
