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
Pregnancy Weight Tracker
"pregnancy weight track" app for iphone and ipad helps you help you monitor your weight during pregnancy and keep it within healthy limits
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 1.0
1 ratings · Below Average
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/
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 Pregnancy Weight 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
Focus on stability and smooth performance in the clone.
Assumption to check: Poor user reviews and low rating due to bugs and crashes.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance with comprehensive meal logging and nutritional insights.
Assumption to check: Limited nutritional tracking features.
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate tips, reminders, and gamification elements.
Assumption to check: Lack of user engagement and motivation tools.
Validate with people who use this workflow before building.
Hypothesis 4
Implement a more intuitive navigation structure.
Assumption to check: Difficult to navigate settings and 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
"pregnancy weight track" app for iphone and ipad helps you help you monitor your weight during pregnancy and keep it within healthy limits. it tracks pre-pregnancy weight, weight-gain on weekly basis. carry it around in your iphone or ipad all the time to keep on top of your weight. features * easy and intuitive interface for tracking pregnancy weight gain. * monitor changes in weight over time. * the log history display allows one to view all historic data. * document your weight gain in each log , add free text notes, write down what you eat. * email and share your weight records with your obstetrician/gynecologists. you can also email to yourself for backup and sharing. * graphically visualize your weight gain (weekly, monthly, 3-monthly) * no monthly subscription fee (unlike some other iphone apps). * no internet connection required to access data, use the app anytime while traveling, all data is stored locally on your iphone. * takes very little of your iphone/ipad memory, extremely small database size. * add photos of your baby bump * share on facebook, email this app saves weight information and calculated data,in addition to maintaining a convenient log of your weight history.
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
Victory Native
React Navigation
Redux
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.
