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
Posture up
HiPee P1 is a smart, wearable posture corrector that gently vibrates whenever you hunch – training your muscle memory to maintain a healthy spine.
$4.99 · In-app purchases
PRICE
$4.99
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 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 Posture up: 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
Include customizable exercise plans and broader exercise library.
Assumption to check: Limited exercise variety and customization options.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance UI/UX design to be more modern and visually attractive.
Assumption to check: User interface is not very engaging or visually appealing.
Validate with people who use this workflow before building.
Hypothesis 3
Add social features like sharing progress and challenges.
Assumption to check: Lack of community features for motivation.
Validate with people who use this workflow before building.
Hypothesis 4
Implement better tracking metrics and personalized feedback.
Assumption to check: Inconsistent performance tracking and feedback.
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
HiPee P1 is a smart, wearable posture corrector that gently vibrates whenever you hunch – training your muscle memory to maintain a healthy spine. But the hardware is only half the story. The POSTURE UP app unlocks the full experience: Personalized setup – calibrates your natural posture Adjustable sensitivity – choose how strict your coach should be Daily tracking – see your progress over hours, days, and weeks Real‑time reminders – without disturbing others One payment. Lifetime access. Unlike other devices that force you into monthly subscriptions, HiPee keeps it honest: $4.99 (limited-time promotional price) Regular price: $19.99 (one-time, not per month) No in-app purchases – what you see is what you get No ads, no hidden fees Why charge for the app? Because maintaining the app – iOS updates, bug fixes, feature improvements – costs us real time and money. This small fee ensures we can keep supporting your device for years。 Disclaimer: The content provided in this app is for informational purposes only and does not constitute medical advice.
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
react-navigation
react-native-reanimated
expo-camera
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.
