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
EatWell - Diet Tracker
EatWell is a clean, simple health tracker designed for carnivore and
$4.99 · In-app purchases
PRICE
$4.99
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
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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/
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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 EatWell - Diet Tracker: 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
Implement a simplified food logging process with barcode scanning.
Assumption to check: Users often find it hard to log food quickly.
Validate with people who use this workflow before building.
Hypothesis 2
Integrate a comprehensive food database API.
Assumption to check: Limited meal database can frustrate users.
Validate with people who use this workflow before building.
Hypothesis 3
Offer personalized insights and suggestions based on user data.
Assumption to check: Progress tracking can feel overwhelming.
Validate with people who use this workflow before building.
Hypothesis 4
Provide a clear breakdown of benefits for each subscription tier.
Assumption to check: Subscription models can be confusing.
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
EatWell is a clean, simple health tracker designed for carnivore and meat-based diet followers. Track your daily meals, morning weight, sleep quality, energy levels, fasting hours, and symptoms — all in one place. Log your lab results including cholesterol, glucose, HbA1c, and inflammation markers to monitor your health journey over time. View your trends at a glance with the Trends dashboard showing weight progress, 7-day averages, and lab result changes. Use the built-in Coach feature to generate a personalized AI prompt based on your logged data. Copy it into your favorite AI tool — ChatGPT, Claude, Grok, or any other — for tailored diet and wellness insights. Key Features: • Daily food and wellness logging • Morning weight tracking • Sleep and energy scoring • Lab result tracking (lipid panel, metabolic, inflammation) • Trend analysis with 7-day averages • AI Coach prompt generator • 100% private — all data stays on your device • No accounts, no cloud, no ads Your data never leaves your phone. EatWell is built with privacy first — no sign-ups, no servers, no tracking. Just you and your health goals.
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
@react-navigation/native
victory-native
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.
