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
Language Learning: Pingo AI
Learn a new language through real conversations with Pingo, your AI speaking companion
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
15,281 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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
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.
JavaScript is required to complete mailbox verification.
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 Language Learning: Pingo AI: map the core Education workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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 full course downloads for offline use.
Assumption to check: Limited offline access to courses
Validate with people who use this workflow before building.
Hypothesis 2
Add AI-driven personalized course recommendations based on user progress.
Assumption to check: Lack of personalized learning paths
Validate with people who use this workflow before building.
Hypothesis 3
Introduce more gamification elements like levels and achievements.
Assumption to check: Minimal gamification features
Validate with people who use this workflow before building.
Hypothesis 4
Enhance quiz feedback with detailed explanations for each answer.
Assumption to check: Inadequate 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
Learn a new language through real conversations with Pingo, your AI speaking companion. Loved by 8,000,000+ users, Pingo uses the most advanced AI built for language learning so you can have real-life conversations, get instant feedback, and learn words you’ll actually use. Speak to Pingo as you would a friend. Want to practice ordering at a café in Paris? Debate politics in Spanish? Or chat about K-dramas in Korean? Talk about your day, ask questions, and explore the language together. Practice speaking from 25+ languages to refine your vocabulary, become fluent, and speak confidently. Learn 25+ languages: English, Spanish, French, German, Japanese, Korean, Italian, Chinese, Portuguese, Russian, Arabic, Dutch, Turkish, Polish, Vietnamese, Hindi, Thai, Hebrew, Greek, Indonesian, Swedish, Norwegian, Danish, Persian, and Ukrainian. How to use Pingo AI 1) Speak to Pingo! Tell Pingo your language goals. 2) Get a personalized learning plan. 3) Practice speaking in real-life conversations. 4) Pingo remembers your progress and adapts as you improve — your personal speaking tutor. 5) Receive instant feedback on pronunciation and grammar for every language conversation. 6) Build real fluency and lasting confidence. Learn a language today! Pingo AI transforms self-guided practice into a goal-oriented, interactive learning experience that’s far more effective than simply repeating basic phrases aloud or struggling to find opportunities for real-life conversations. Ditch static, repetitive modules and boring lessons. At Pingo AI, we’re building the most dynamic and immersive AI language learning experience ever to help you reach your language goals as fast as possible. If you have any ideas or questions, please email us at [email protected]. Subscription Details: Pingo Pro A subscription is required to access full conversation practice and personalized language learning features. Pingo AI offers monthly and annual auto-renewing subscriptions. Payment is charged when your purchase is confirmed. Subscriptions renew automatically unless canceled 24 hours before the end of the current billing period. You can manage or cancel your subscription anytime. Terms: https://pingo.ai/terms Privacy Policy: https://pingo.ai/privacy
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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-video
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.
