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
Habit Tracker - Pure Habits
Build habits that stick — inspired by James Clear's Atomic Habits.
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
3 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 included16 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 Habit Tracker - Pure Habits: 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
Simplify the onboarding process with guided setup.
Assumption to check: Users often find habit tracking apps too complex or overwhelming.
Validate with people who use this workflow before building.
Hypothesis 2
Implement robust notification testing and user feedback.
Assumption to check: Some users report bugs related to notifications not working.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to customize colors and icons for each habit.
Assumption to check: Limited customization options for habits.
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
Build habits that stick — inspired by James Clear's Atomic Habits. Pure Habits is a private, offline-first habit tracker built for people who want results without complexity, clutter, or a recurring bill. WHY PURE HABITS Most habit apps guilt you with broken streaks, demand a cloud account, or lock basic features behind a monthly subscription. Pure Habits does none of that. One purchase. Everything included. Your data stays on your device — always. BUILT ON PROVEN SCIENCE Inspired by James Clear's Four Laws of Behavior Change, every feature in Pure Habits is designed to make good habits obvious, attractive, easy, and satisfying: - Habit stacking — chain new habits to existing ones - 15-second micro-habits — lower the barrier to starting - Daily reminders — keep you consistent and compound your streaks - Visual streaks — instant feedback that makes progress feel real BEAUTIFULLY SIMPLE Pure Habits uses Apple's Liquid Glass design language — clean, distraction-free, and fast. Switch between Grid, Week, and Month views to see your progress exactly how you think about it. - Habit templates to get started in seconds - Flexible tracking modes for any type of habit - Works on iPhone, iPad & Mac (M1+). UI optimized for mobile view 100% PRIVATE. ZERO DATA COLLECTED. We don't collect your data. We don't sync it to a server. We don't even ask for your name. Everything stays on your device — private by design, not just by policy. ONE PRICE. EVERYTHING INCLUDED. Download Pure Habits and start your first streak today.
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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.
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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.
