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
Talking ABC...
The process of learning the letters is exciting and fun while amusing animal characters are made in the style of clay animation
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.5
121 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 Talking ABC...: 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 free lessons or a demo mode.
Assumption to check: Limited content and lessons available for free users.
Validate with people who use this workflow before building.
Hypothesis 2
Introduce varied game types to maintain engagement.
Assumption to check: Repetitive mini-games can become boring.
Validate with people who use this workflow before building.
Hypothesis 3
Thoroughly test audio components and improve performance.
Assumption to check: Some users report bugs in the audio playback.
Validate with people who use this workflow before building.
Hypothesis 4
Clarify pricing and benefits of each in-app purchase.
Assumption to check: In-app purchase options can be confusing.
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
The process of learning the letters is exciting and fun while amusing animal characters are made in the style of clay animation. Each animal has a Talking mode, enabling a child not only listen how letters and animals sound, but also to practice the pronunciation. A cheerful, beautiful and memorable song about letters will help to remember the alphabet easily and will bring a wonderful mood. The app contains 6 games, each of which is interesting and efficient in its special way. “With its creative animation, this app puts a twist on an otherwise fairly typical ABC book” — KirkusReviews.com “One of the most engaging and innovative ABC apps on the market” — theiMum.com “It is a great place to start their journey into the world of reading” — TapScape.com “Impressive to say the least” — 148apps.com “It’s a fun, unique way for little ones to practice their letter recognition” — SmartAppsForKids.com “It is a child-friendly app that kids will find easy to navigate and use” — BestAppsForKids.com “Talking ABC is a must have app for kids” — TopBestAppsForKids.com FEATURES: — Exciting learning of letters from A to Z — Unique clay art — 2 learning modes – letters and sounds — Funny and catchy alphabet song — Amazing animals with talking mode — Kid-friendly interface — 6 exciting and educational games — Puzzles with animated animals — No in-app purchases Play, Learn, Have Fun with Talking ABC! Talking ABC is compatible with iPhone 4s, iPad 2, iPod touch 4 or higher. Requires iOS 7 or later. Watch the Official Trailer: youtu.be/ElUImOqsmXc Find out more at: hey-clay.com/talking-abc Follow HEY CLAY on: Facebook: facebook.com/heyclayapps YouTube: youtube.com/c/Hey-clay Twitter: twitter.com/HeyClay_ Instagram: instagram.com/hey.clay Privacy Policy: Our apps are designed specially for children, with special attention to the privacy. The Privacy Policy can be found here: hey-clay.com/privacypolicy As a Know What’s Inside member, we follow best practices for kids’ apps. Learn more at: knowwhatsinside.com/hey-clay
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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
Zustand
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react-navigation
react-native-gesture-handler
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.
