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
iPregnancyTest
iPregnancyTest is the MOST fun you can have pretending to see if you're iPregnant! SO MUCH simpler to use (not to mention, less messy) than those _REAL_ pregnancy tests! You get ALL the fun of pretending to see if you...
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.3
21 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 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 iPregnancyTest: map the core Entertainment 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
Include more detailed resources and interactive features.
Assumption to check: Limited functionality and educational content
Validate with people who use this workflow before building.
Hypothesis 2
Modernize UI with better design elements and responsiveness.
Assumption to check: User interface is outdated
Validate with people who use this workflow before building.
Hypothesis 3
Improve algorithm for more accurate and personalized results.
Assumption to check: Inaccurate test results
Validate with people who use this workflow before building.
Hypothesis 4
Add gamification elements to encourage regular use.
Assumption to check: Low user engagement
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
iPregnancyTest is the MOST fun you can have pretending to see if you're iPregnant! SO MUCH simpler to use (not to mention, less messy) than those _REAL_ pregnancy tests! You get ALL the fun of pretending to see if you're pregnant with NONE of the downsides! What more could anyone ask for!? - Easy to use! - "Result Sharing". Share your positive results with your friends! Complete with iBabyDaddy Generator! You could even share the news of your REAL pregnancy results via Text Message! - iBabyDaddy Generator. You can either enter the name of the iBabyDaddy (if you happen to know who he or she is) or you can use the iBabyDaddy Generator which will determine who the iBabyDaddy is based on your Address Book contacts! (It's very scientific) - iBabyDaddy Picker. If you know who iKnocked you up already, just search or select from your Address Book contacts and let them know! - Coin-Flip Mode. Tired of waiting a few seconds for your results? Turn on Coin-Flip Mode to turn iPregnancyTest into the most AWESOME Coin-Flip app, EVER! Help make those tough life decisions! Got ideas for new features? Send me an email! WARNING: iPregnacyTest can only determine if you are iPregnant! If you need to know if you're ACTUALLY pregnant, I suggest a visit to your local drug store or doctor.
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
React Navigation
Zustand
React Native Paper
expo-date-picker
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.
