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
Cruise Power
Simplify your aircraft performance calculations with this easy-to-use aviation app!
$0.99 · In-app purchases
PRICE
$0.99
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 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 Cruise Power: map the core Navigation 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 downloadable offline maps for users.
Assumption to check: Lack of offline map features
Validate with people who use this workflow before building.
Hypothesis 2
Integrate real-time traffic data for better route planning.
Assumption to check: Limited traffic data integration
Validate with people who use this workflow before building.
Hypothesis 3
Implement text-to-speech for turn-by-turn navigation.
Assumption to check: No voice navigation options
Validate with people who use this workflow before building.
Hypothesis 4
Focus on user feedback to enhance app features and usability.
Assumption to check: Poor user reviews and ratings
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
Simplify your aircraft performance calculations with this easy-to-use aviation app! Insert altitude, temperature, and altimeter setting, and the app will provide the RPM and manifold pressure required for your desired power setting, along with fuel flow details. Leverage your iPhone’s pressure sensor for automatic altitude updates, and calculate temperature based on ISA lapse rates for precise adjustments. Virtual Fuel Gauges replicate the Bonanza’s single fuel gauge, enabling precise determination of tank quantities. All tank quantities are totalized, and remaining usable fuel is displayed for quick reference. Cruise Power aids in achieving efficient fuel usage and maximizing engine performance. Its intuitive design and compatibility with the Model 35 aircraft, equipped with three 20-gallon tanks and an E-225 engine, make it an essential tool for optimizing flight operations and reducing operational costs. Download now and take the guesswork out of aircraft performance planning while enhancing efficiency and reducing costs! Disclaimer: Caution: The outputs provided by Cruise Power may be erroneous and should not be used for safety-critical operations. Always cross-check the app's recommendations with data certified or advised by the Original Equipment Manufacturer (OEM). This app is provided "as-is" without any representations or warranties, express or implied. The developer assumes no responsibility or liability for the use of this app.
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
Zustand
react-navigation
axios
react-native-maps
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.
