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
Nutrings+
This app is intended for Nutrition+ app users that have created an account at https://glucoseplusapp.com through Nutrition+ integration.
$0.99 · In-app purchases
PRICE
$0.99
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.
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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/
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 Nutrings+: 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 a barcode scanner for easy food entry.
Assumption to check: Users often find food tracking tedious and time-consuming.
Validate with people who use this workflow before building.
Hypothesis 2
Offer customizable meal plans and grocery list generation.
Assumption to check: Limited meal planning features compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 3
Implement push notifications for meal logging reminders.
Assumption to check: Inconsistent user engagement due to lack of reminders.
Validate with people who use this workflow before building.
Hypothesis 4
Provide a comprehensive onboarding experience.
Assumption to check: High drop-off rate after initial download.
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
This app is intended for Nutrition+ app users that have created an account at https://glucoseplusapp.com through Nutrition+ integration. The app reads respective latest nutrition facts via Nutrition+ integration. iPhone/Apple Watch app allow access directly to the colour coded rings for latest -current or daily nutrition facts statistics such as calories, carbs, fiber, protein, cholesterol, sodium, water all of them in one shot connecting to https://glucoseplusapp.com user account. The Apple Watch app allows also to see on top of latest nutrition facts, current activity ring levels through integration with Health app. As well, it offers an extra complication customizing any nutrition fact to be displayed on respective complication on the Apple Watch screen to track the latest level of the nutrition fact as per user's convenience, the app automatically syncs the latest levels keeping the complication updated. Apple Watch notifies about high or low levels of any nutrition fact that been chosen!
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
TypeScript
Axios
React Navigation
React Query
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.
