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
TapBTC
Most Bitcoin complications on Apple Watch are stale by the time you glance at them — and the ones that aren't will charge you a monthly fee just to stay current.
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 included15 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 TapBTC: map the core Finance 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 feedback loops and improve onboarding.
Assumption to check: Lack of user reviews and feedback may indicate poor user experience or functionality.
Validate with people who use this workflow before building.
Hypothesis 2
Design a clear and concise navigation structure.
Assumption to check: Crypto wallets often lack intuitive navigation, making it hard to find features.
Validate with people who use this workflow before building.
Hypothesis 3
Enhance security features like two-factor authentication and secure storage.
Assumption to check: Security concerns regarding crypto transactions can deter users.
Validate with people who use this workflow before building.
Hypothesis 4
Offer a broader range of transaction options, including swaps and exchanges.
Assumption to check: Limited transaction types may not meet user needs.
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
Most Bitcoin complications on Apple Watch are stale by the time you glance at them — and the ones that aren't will charge you a monthly fee just to stay current. TapBTC is different. Tap the complication. That's it. No app opens, no loading screen — the price fetches instantly in the background and your complication updates in seconds. Works on all four Apple Watch complication slots: circular, rectangular, inline, and corner. Already running on the fastest free refresh schedule Apple allows — complications update automatically every 15 minutes without you touching anything. Most other apps don't even come close. Features: Tap any complication to silently refresh the price Auto-refreshes at Apple's maximum allowed rate iPhone app shows live price, 24h high/low, all-time high, and current block height Home screen and lock screen widgets included No subscription. No ads. One-time purchase. Built for people who actually check Bitcoin on their wrist.
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
Redux
axios
react-navigation
react-native-svg
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.
