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
90 Meal Plans
90 Meal Plans from the 90 Day Challenge – Powered by FitChef - Your shortcut to healthy eating, strength building, and fat loss.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.0
5 ratings · Top 30%
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 90 Meal Plans: map the core Food & Drink 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
Introduce more customizable meal components and ingredient choices.
Assumption to check: Limited meal customization options
Validate with people who use this workflow before building.
Hypothesis 2
Implement guided onboarding to help users understand the app features.
Assumption to check: Difficult navigation for new users
Validate with people who use this workflow before building.
Hypothesis 3
Add social features for users to share meal plans and recipes.
Assumption to check: Lack of community features
Validate with people who use this workflow before building.
Hypothesis 4
Enhance filtering options for specific dietary needs (vegan, gluten-free, etc.).
Assumption to check: Insufficient dietary filters
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
90 Meal Plans from the 90 Day Challenge – Powered by FitChef - Your shortcut to healthy eating, strength building, and fat loss. Take the first step toward your fitness goals with 90 Meal Plans from the 90 Day Challenge! Fuel your progress with the app built to help you lose fat, gain muscle, or simply eat healthier. Created by Stan Browney in collaboration with FitChef, this app is packed with customized meal plans and tools to make healthy eating effortless and effective. What Makes 90 Meal Plans from the 90 Day Challenge Stand Out? - Custom meal plans - Designed specifically for muscle growth, weight loss, or balanced living. - Delicious, easy recipes - Fuel your day with simple, nutritious meals you’ll love. - Personalized options - Adjust meal frequency, pick your diet type, and exclude foods or allergens. - Smart shopping lists - Save time and stay organized with auto-generated grocery lists. - Results-driven design - Take the guesswork out of eating for your goals. Getting Started is Simple: - Download the app - Start planning your meals in just a few clicks. - Select a subscription – Choose a 3-month plan or 12-month plan. - Log in and explore – Access your personalized meal plans and recipes instantly. Your plan will automatically renew after your initial term, but you can manage or cancel your subscription anytime through the app for ultimate flexibility. Why You’ll Love It: - Get the right portions, macros, and ingredients without stress. - Stay consistent with tools that make meal prep a breeze. - Transform your eating habits and fuel your fitness journey today! Download 90 Meal Plans from the 90 Day Challenge and start achieving results like never before. https://fitchef.com/terms-and-conditions https://fitchef.com/privacy-policy
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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.
SUGGESTED BUILD STACK
React Native
Expo
Supabase
Zustand
React Navigation
React Native Reanimated
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.
