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
Tap Habit One
Train smarter
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 ratings · Top 5%
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 included14 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 Tap Habit One: map the core Health & Fitness 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
Incorporate social challenges and reminders to boost engagement.
Assumption to check: Lack of user engagement features like reminders or social sharing
Validate with people who use this workflow before building.
Hypothesis 2
Provide more detailed analytics and visual progress tracking.
Assumption to check: Limited habit tracking feedback and analytics
Validate with people who use this workflow before building.
Hypothesis 3
Integrate with HealthKit/Google Fit for comprehensive tracking.
Assumption to check: No integration with health data sources
Validate with people who use this workflow before building.
Hypothesis 4
Implement a guided onboarding to help users set up their habits.
Assumption to check: Poor onboarding process for new users
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
Train smarter. Stay consistent. Get better at Jiu Jitsu. TapHabit is built for grapplers who want real progress, not guesswork. Whether you are just starting out or leveling up your game, TapHabit helps you track your training, build discipline, and stay focused on what actually improves your performance on the mat. Built for Jiu Jitsu This is not a generic fitness app. TapHabit is designed specifically for Brazilian Jiu Jitsu athletes. Log your rolls, track techniques, and build habits that translate directly into your performance. Track Your Progress • Log classes, open mats, and rolls • Track techniques you are working on • Record wins, losses, and key takeaways • Stay consistent with your training Progress in Jiu Jitsu takes time. TapHabit helps you see it. Learn From Every Session Stop forgetting what happened after training. Capture: • What worked • What did not • What to focus on next Turn every session into real improvement. Build Habits That Matter Great Jiu Jitsu is built off the mat too. Track: • Strength and conditioning • Recovery and mobility • Daily discipline Stay accountable and keep moving forward. Stay Focused Whether you are training for competition or just trying to improve, TapHabit keeps your goals clear and your progress consistent. Consistency wins. TapHabit makes sure you keep showing up.
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/native
Axios
Victory Native
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.
