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
Project Rebalance
Project Rebalance is a structured training and nutrition platform built for busy parents who want to improve strength, energy, and metabolic health without complicated plans.
$29.99 · In-app purchases
PRICE
$29.99
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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 Project Rebalance: 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
Offer a more competitive pricing model or limited free tier.
Assumption to check: High subscription costs compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Implement social challenges and community engagement features.
Assumption to check: Lack of community features
Validate with people who use this workflow before building.
Hypothesis 3
Expand exercise database and allow user-generated content.
Assumption to check: Limited exercise variety
Validate with people who use this workflow before building.
Hypothesis 4
Enhance analytics and provide more detailed progress reports.
Assumption to check: Inadequate progress tracking
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
Project Rebalance is a structured training and nutrition platform built for busy parents who want to improve strength, energy, and metabolic health without complicated plans. Most health apps overwhelm users with tracking, streaks, and constant notifications. Project Rebalance focuses on clarity and consistency. Inside the app: • Structured strength training programs • Clear weekly workout progression • Sustainable conditioning sessions • Simple nutrition guardrails • Coach-led accountability • Progress tracking and reassessments The system is built around repeatable weekly structure rather than extreme intensity. Programs emphasize strength training, sustainable aerobic capacity, and practical nutrition habits that fit real life. Designed for adults 35–50 navigating elevated A1C, declining energy, or inconsistent training habits, Project Rebalance removes decision fatigue and replaces it with a clear plan. Coaches can: • Build custom training programs • Assign structured templates • Track workout completion • Monitor progress and adherence • Provide weekly accountability check-ins Clients can: • Follow structured weekly sessions • Log workouts and notes • Track strength progress • Complete reassessments • Communicate with their coach This is not a calorie-counting app. It is a structured performance and metabolic stability platform. Simple. Repeatable. Sustainable. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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
axios
@react-navigation/native
Chart.js
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.
