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
Habit Tracker: A simple daily planner to schedule and track your routine, making it easy to build lasting habits.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
146,820 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 included18 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 Habit Tracker: map the core Productivity 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
Allow users to create custom habit templates with more flexible settings.
Assumption to check: Limited customization options for habits
Validate with people who use this workflow before building.
Hypothesis 2
Introduce social features for users to share their progress and motivate each other.
Assumption to check: Lack of community features
Validate with people who use this workflow before building.
Hypothesis 3
Add advanced analytics for users to visualize their habit trends over time.
Assumption to check: Difficulties in tracking long-term progress
Validate with people who use this workflow before building.
Hypothesis 4
Provide customizable reminder settings, including snooze options.
Assumption to check: In-app reminders can be intrusive
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
Habit Tracker: A simple daily planner to schedule and track your routine, making it easy to build lasting habits. Join 15M+ happy users, achieve your goals, and make every day count! More than a self-care companion, it lets you share with others to grow and improve together. ----Useful Features---- Sync with Apple Health: Track water intake, steps, sleep, exercise, and calories to seamlessly monitor your wellness journey. Build & Quit Habits: Create positive routines or break free from bad habits with tailored tracking. Flexible Goal Tracking: Measure progress with specific units (e.g., minutes, glasses of water), not just checkmarks. Group Habits: Stay motivated by building, reminding, and tracking habits with friends or loved ones. Insightful Stats: Get detailed analytics to evaluate and celebrate your progress. Habit Reports: Weekly, monthly, and yearly reports to visualize your growth. Mood Tracking: Monitor your mental wellness to stay balanced and mindful. Smart Reminders: Set time- or location-based reminders to stay on track effortlessly. Multiple Reminders: Add as many reminders as needed for any habit. Custom Sounds: Record or import unique reminder sounds for a personal touch. Widgets for Easy Access: Use Home Screen & Lock Screen to log habits instantly without opening the app. HRV Stress Monitor: Track your heart rate variability (HRV) to measure stress levels and gain insights into your well-being Habit Diary: Jot down notes to reflect on your journey in a personal habit memo. Focus Timer: Stay focused with natural sounds & create a calming, distraction-free environment Cloud Sync: Back up and sync your data across devices for seamless access. Daily Inspiration: Enjoy motivational wallpapers and quotes to keep you inspired. Privacy Protection: Secure your data with FaceID or TouchID. Friendly Competition: Compete with friends to see who’s crushing their habits. ADHD Planner: ADHD friendly plans built-in to help. Dark Mode: Sleek design for a comfortable experience, day or night. Habit Tracker helps you simplify your daily routine, clear your mind, stay on track with your goals, and build a better life. Download now! Perfect for ADHD users, this app simplifies planning and tracking to help you stay focused, build routines, and thrive with ease. NOTE: Habit reads data for some habits from Apple Health app (Steps, energy, walking, running ..etc). No data is being sent outside of your device. Health app access required. EULA: https://www.eulatemplate.com/live.php?token=MRcYNs6U8BXMLSDWG0BzEqLPPtL2Vc46
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
react-navigation
zustand
react-native-paper
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.
