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
My Plate - Calorie Diary
Calorie - Diary
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
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 included17 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 My Plate - Calorie Diary: 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
Implement a community-driven database where users can contribute food items.
Assumption to check: Limited food database leading to user frustration.
Validate with people who use this workflow before building.
Hypothesis 2
Focus on modern UI design principles and user testing.
Assumption to check: Poor user interface leading to confusion.
Validate with people who use this workflow before building.
Hypothesis 3
Create a streamlined logging process with quick add features.
Assumption to check: Inconsistent logging experience for tracking meals.
Validate with people who use this workflow before building.
Hypothesis 4
Add detailed analytics and goal-setting features for users.
Assumption to check: Limited progress tracking features.
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
Calorie - Diary Your smart and simple AI-powered food tracker. Calorie - Diary makes it easy to track your meals, monitor calorie intake, and reach your nutrition goals — all in one beautifully designed app. Just snap a photo of your meal, and the app will automatically detect the food and calculate the calories for you. Whether you're managing your weight, building healthy habits, or just curious about your eating patterns, Calorie - Diary gives you powerful tools to stay on track every day. Key Features: • AI-powered calorie detection from photos • Snap and log meals in seconds • Track your daily food intake with visual insights • See progress with clean charts and stats • Stay motivated with daily check-ins and weight tracking • Simple and intuitive interface for all levels Subscription Information Payment: Subscription payments will be charged to your iTunes account at confirmation of purchase and at the beginning of each renewal period. Your subscription will automatically renew unless canceled. Cancelation: You can cancel your subscription in your iTunes account settings at least 24 hours before the end of the current billing cycle. The cancellation will take effect the day after the current subscription period ends, and you will be downgraded to the free version. Privacy Policy: https://docs.google.com/document/d/13nGzIU_Ft-oJ93zeR_wIZOfaLqYw00rMFW84m38PLBA/edit?usp=sharing Terms and Conditions: https://docs.google.com/document/d/1BE2EF5IC3I8A6XmIEt2ESekKDdwd5LZ2xw0BLA08E58/edit?usp=sharing
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
Advanced
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.
