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
75 Soft Challenge Tracker App
Build healthier habits, improve your mindset, and transform your daily routine in a simple, sustainable way
$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/
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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 75 Soft Challenge Tracker App: 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 features for sharing progress and challenges.
Assumption to check: Users may find it difficult to stay motivated with tracking challenges.
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to customize their challenge tasks and reminders.
Assumption to check: Lack of personalization in tracking methods.
Validate with people who use this workflow before building.
Hypothesis 3
Provide detailed graphs and insights for user performance.
Assumption to check: Limited analytics on progress tracking.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce new challenges and gamify the experience.
Assumption to check: Challenges may feel repetitive and uninspired.
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 healthier habits, improve your mindset, and transform your daily routine in a simple, sustainable way. 75 Soft Challenge Tracker is designed to guide you through a balanced 75-day journey—perfect for anyone who wants discipline without burnout. Why This App Helps You Succeed A Balanced 75-Day Routine Follow a structured yet flexible daily plan that supports fitness, mindfulness, hydration, reading, nutrition, and rest. Beautiful Daily Dashboard Track every task in one minimal, calming interface that encourages consistency and reduces overwhelm. Streaks That Motivate You Stay committed with streak tracking that visually rewards your progress day after day. Progress Photos & Journaling Document your transformation, both physically and mentally, with daily photos and notes. Smart Calendar View See your full 75-day journey in a single glance—perfect for staying organized and inspired. Focused, Distraction-Free Design Clean visuals and a modern layout help you stay engaged and motivated throughout the challenge. What You’ll Gain Consistent daily habits Better energy and focus A stronger mindset Improved self-discipline A sense of accomplishment every day Start Your 75-Day Transformation Take control of your health and habits in a way that feels achievable, enjoyable, and sustainable. Begin your journey today with 75 Soft Challenge Tracker.
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
Victory Native
React Navigation
Zustand
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.
