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
SpanishUp: Learn Real Spanish
Your Spanish Speaking Journey Starts Here！Speak Spanish with Confidence – Powered by AI!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
55 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 included16 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 SpanishUp: Learn Real Spanish: 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
Incorporate more interactive quizzes and games.
Assumption to check: Limited interactive content and exercises.
Validate with people who use this workflow before building.
Hypothesis 2
Implement adaptive learning based on user performance.
Assumption to check: Lack of personalized learning paths.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to download lessons for offline study.
Assumption to check: No offline accessibility for lessons.
Validate with people who use this workflow before building.
Hypothesis 4
Provide detailed explanations and learning resources after quizzes.
Assumption to check: Limited feedback on quizzes.
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
Your Spanish Speaking Journey Starts Here！Speak Spanish with Confidence – Powered by AI! ◆ Do you ever feel ◆ You know some Spanish but freeze when you need to speak? You get nervous during real conversations? You memorize words but can’t put them into natural sentences? SpanishUp uses the latest AI technology to break these barriers, so you’re not just learning Spanish – you’re speaking it fluently and confidently. ◆ Why Choose SpanishUp ◆ Immersive AI Conversations – Talk with AI characters in real-life scenarios: from asking directions at the airport to ordering food at a local restaurant. Real-time Corrections & Pronunciation Guidance – AI gives instant feedback, helping you avoid common mistakes and sound more natural. Personalized Learning Path – Your lessons are tailored to your skill level and goals for maximum efficiency and engagement. Cultural Context – Learn the customs and traditions of Spanish-speaking countries to communicate naturally without awkwardness. Daily Micro Goals – Just 10 minutes a day builds your fluency and confidence step by step. ◆ Unique Features ◆ Human-like AI Voices – Engage in conversations that sound just like talking with a real friend. All-Scenario Lessons – Tourism, study abroad, business, or leisure – we cover it all. Stress-free Practice – No judgment, no pressure, only guidance and encouragement. Progress Tracking – Visual learning reports and progress charts keep you motivated. ◆ Perfect For ◆ Travelers preparing for trips to Spanish-speaking countries Expats living or working abroad Students preparing for Spanish exams or interviews Language lovers eager to explore Hispanic culture SpanishUp isn’t just a learning app – it’s your personal AI Spanish coach, ready to help you speak with confidence anytime, anywhere. Start today – never hesitate to speak again. Feel free to contact us at [email protected] — we’d love to hear from you. Privacy Policy: https://docs.google.com/document/d/1Gm-6qZNcbzfIM3fMfXlL96Yh21vVNekcrC60TRubtv8/edit?usp=sharing Terms and Conditions: https://docs.google.com/document/d/1zx1O3PCJzIazkmOaXYmLvUVUASmpsINMMAGw72f020M/edit?usp=sharing
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
@react-navigation/native
Supabase
expo-av
react-native-paper
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.
