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
Freeskate
Learn to Skate USA, the premier basic skating program in the world, has teamed up with Rink Tank Interactive, LLC to bring you the Learn to Skate USA 'Skate Coach' app series for iOS!
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.6
5 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
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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 Freeskate: map the core Sports 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
Implement user-generated content to expand the trick library.
Assumption to check: Limited trick database can frustrate users.
Validate with people who use this workflow before building.
Hypothesis 2
Add a progress tracker for challenges.
Assumption to check: Difficulties in tracking challenge progress.
Validate with people who use this workflow before building.
Hypothesis 3
Introduce social sharing options to promote engagement.
Assumption to check: Lack of social sharing features.
Validate with people who use this workflow before building.
Hypothesis 4
Enhance UI for a clearer understanding of premium features.
Assumption to check: In-app purchase frustrations.
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 to Skate USA, the premier basic skating program in the world, has teamed up with Rink Tank Interactive, LLC to bring you the Learn to Skate USA 'Skate Coach' app series for iOS! The Skate Coach app series was designed to help skaters, parents, instructors and officials understand the standards set for the Basic Skills Program through the use of high definition video examples. The Freeskate 1-6 app is divided into 4 areas of skating, including moves in the field, dance sequence, spins and jumps. The levels are designed to be MASTERED so when skaters graduate from Freeskate 6, they have a strong foundation on which to build. Whether in the comfort of your own home, traveling to the rink or during practice, you will always have a Skate Coach in your pocket! DISCLAIMER: Participating in ice skating has inherent risks, but with good technique and sound equipment these risks are mitigated. While the Skate Coach app series provides examples of skills performed correctly, they are NOT meant to supplement professional skating instruction! Improper use of the Skate Coach apps could result in bodily harm! Please do not attempt these maneuvers while holding an iPhone, iPod touch or iPad on the ice. Learn to Skate USA and Rink Tank Interactive are not responsible for injuries resulting from (direct or indirect) use of these apps.
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
Supabase
TypeScript
React Navigation
react-native-video
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.
