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
SleepPlus
Tired of ugly sleep tracking interface? What if you could track your sleep daily beautifully?
$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.
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'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 SleepPlus: 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
Implement automatic sleep tracking using device sensors.
Assumption to check: Users often find it difficult to consistently log sleep accurately.
Validate with people who use this workflow before building.
Hypothesis 2
Add gamification elements like rewards for meeting sleep goals.
Assumption to check: Some users report lack of motivation to improve sleep habits.
Validate with people who use this workflow before building.
Hypothesis 3
Provide personalized insights based on sleep data trends.
Assumption to check: Limited insights and analysis on sleep patterns.
Validate with people who use this workflow before building.
Hypothesis 4
Simplify subscription options and provide a clear comparison of features.
Assumption to check: Subscription models can be confusing.
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
Tired of ugly sleep tracking interface? What if you could track your sleep daily beautifully? Sleep Plus makes sleep tracking effortless. Sync your smartwatch data and instantly view your sleep patterns in a simple, clear format, color-coded, science-based No manual input. Features • Automatically pulls sleep data from any smartwatch. • Clean, minimalist interface for quick and easy use. • Streak tracking to keep you motivated and consistent. Detailed Stats • Color-coded sleep bars: • Green for great sleep (7h30 or more). • Orange for moderate sleep (between 6h30 and 7h30). • Red for poor sleep (less than 6h30). • Track trends over time and improve your sleep routine. Get educated with Knowledge • Understand sleep better with various facts and general stats Sleep smarter with clear, actionable insights. Download Sleep Plus now and start improving your sleep today! LEGAL: - Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ - Privacy Policy: https://kientran.org/privacypolicy
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
Node.js
Firebase
Axios
Recharts
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.
