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
Fry Words Ninja - Reading Game
"Thank you for listening and creating a custom Fry Words Ninja app so that our kids can use your fantastic slicing app to learn to read their fry words for school." Ms
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.4
259 ratings · Top 30%
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
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A product spec, screen plans, and build steps for your coding agent.
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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/
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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 Fry Words Ninja - Reading Game: 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
Add more diverse games and learning activities.
Assumption to check: Limited game variety
Validate with people who use this workflow before building.
Hypothesis 2
Incorporate instant feedback for correct/incorrect answers.
Assumption to check: Lack of user feedback
Validate with people who use this workflow before building.
Hypothesis 3
Enable users to share progress with friends or on social media.
Assumption to check: No progress sharing
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to customize learning themes or game settings.
Assumption to check: Few customization options
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
"Thank you for listening and creating a custom Fry Words Ninja app so that our kids can use your fantastic slicing app to learn to read their fry words for school." Ms. Hunter, Elementary School Teacher WHY PARENTS AND TEACHERS LOVE THIS APP • Fun, simple, and easy to use • Kids love it • Great reward for students • Kids learn while having fun • HUGE collection of fry words - includes 100 lists • Easy to customize • Learning should be fun and interactive • Automatically changes difficulty so kids never get bored WHY KIDS LOVE IT • Fun, simple, and easy to use • Slicing words makes learning fun • It feels like a game • Kids love to learn while playing games • Variety keeps kids engaged WHAT IS INCLUDED • A huge list of fry words • Includes over 1,000 words sorted by grade • Each grade has 100 words broken into 10 lists • You can turn each list ON and OFF • You decide exactly which fry words to focus on HEROIC SUPPORT Heroic Support is not just what we do. It's really what makes us, well, us. It's that drive to make a difference in your life - no matter how big or small. Really, it's our way of life because we want you to be our customer for a lifetime of fun and learning. Have questions about Fry Words Ninja? We are here to help. Email us at [email protected]
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
Zustand
react-navigation
expo-av
Firebase
BUILD KIT DIFFICULTY
Starter
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.
