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.
Know your altitude anywhere, anytime
$1.99
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Altimeter Pro - GPS Altitude: map the core Travel workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Affiliate link: CloneChart may earn a commission at no extra cost
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Know your altitude anywhere, anytime. Whether you're hiking mountain trails, skiing steep slopes, or exploring new terrain — Altimeter Pro gives you precise elevation data using both GPS satellites and your iPhone's built-in barometric sensor. WHY ALTIMETER PRO? Your iPhone has powerful sensors most apps don't fully utilize. Altimeter Pro combines GPS triangulation with barometric pressure readings through an advanced sensor fusion algorithm. The result? Altitude measurements that are more accurate and responsive than either GPS or barometer alone. ACCURATE ALTITUDE MEASUREMENT • GPS altitude from satellite triangulation — works completely offline • Barometric altitude using the built-in pressure sensor • Smart sensor fusion combines both for best accuracy • Automatic calibration with sea-level pressure reference • Track minimum and maximum altitude during your session FULL BAROMETER • Real-time atmospheric pressure in hPa, inHg, or mmHg • Monitor pressure changes that may indicate weather shifts • Relative altitude tracking shows how much you've ascended or descended since launch BUILT-IN COMPASS • Smooth animated compass with true north heading • Cardinal and intercardinal direction display • Bearing in degrees for precise navigation GPS & LOCATION • Coordinates in both decimal degrees and DMS format • Reverse geocoding shows your current place name • Speed display and GPS accuracy indicators ALTITUDE CHART • Real-time graph plots your elevation over time • See your ascent and descent profile at a glance • Record sessions to capture your route's full elevation changes DESIGNED FOR THE OUTDOORS • Dark interface optimized for sunlight readability • Large, bold altitude display readable at arm's length • Single-screen dashboard — all data visible without navigating • Works offline — no cellular signal required PERFECT FOR • Hikers and trekkers tracking elevation gain • Skiers and snowboarders monitoring altitude on the slopes • Mountain bikers riding technical terrain • Paragliders and pilots checking altitude • Fishermen and weather watchers tracking barometric pressure • Surveyors and construction workers checking relative height • Anyone curious about their current elevation SHARE YOUR ADVENTURE Instantly share your altitude, coordinates, and location with friends. Show them exactly where you are and how high you've climbed. FULLY CUSTOMIZABLE • Switch between meters and feet • Choose pressure unit: hPa, inHg, or mmHg • Select altitude source: GPS, Barometer, or Fused • Adjust sea-level pressure for manual calibration Download Altimeter Pro and never wonder about your elevation again.
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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
Assumption to check: Limited user engagement features (no social sharing or community aspects)
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No customization options for users
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of offline functionality
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No integration with other fitness apps
Validate with people who use this workflow before building.
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.