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
hCG Diet Assistant
hCG Diet Assistant is the ultimate hCG Tracker which provides a basic overview of the hCG diet Protocol along with daily tracker sheets to keep track of your results with the hCG diet.
$9.99 · In-app purchases
PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.5
656 ratings · Top 50%
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 hCG Diet Assistant: 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
Provide a wider range of recipes and meal plans.
Assumption to check: Limited meal options and suggestions
Validate with people who use this workflow before building.
Hypothesis 2
Ensure a more responsive and uniform design.
Assumption to check: Inconsistent user experience across different devices
Validate with people who use this workflow before building.
Hypothesis 3
Implement better analytics and visualization tools.
Assumption to check: Difficult to track long-term progress
Validate with people who use this workflow before building.
Hypothesis 4
Add community features to share progress and recipes.
Assumption to check: Limited social features for motivation
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
hCG Diet Assistant is the ultimate hCG Tracker which provides a basic overview of the hCG diet Protocol along with daily tracker sheets to keep track of your results with the hCG diet. FEATURES: Daily guide to 4 hCG stages hCG dosing tracker Food tracking including full nutrition info Over 400,000 foods included in the offline database Exercise tracking Body trackers Weight tracking Water tracking User friendly graphs hCG Diet Assistant comes with recommended foods for every hCG stage. Over 400,000 food items from 1024 food brands and 600 restaurants makes this app the most comprehensive hCG tracker on the App Store! FEATURES IN DETAILS: Favorites/custom food builder Database search Easy access to previous items Quick add calories Reports Over 200 exercises included Custom reports Steak day Pills, needle or drops tracking 1921 supermarket brands 680 restaurants with their full menus Over 400,000 food items in total
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
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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.
