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
PILOTLOG - CrewLounge AERO
Log your flights, simulator and duty time
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.2
131 ratings · Top 30%
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 included18 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 PILOTLOG - CrewLounge AERO: 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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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 faster real-time messaging using WebSocket.
Assumption to check: In-app messaging is often slow and unresponsive
Validate with people who use this workflow before building.
Hypothesis 2
Simplify flight log entry with smart suggestions and autofill features.
Assumption to check: Flight log entry process can be cumbersome
Validate with people who use this workflow before building.
Hypothesis 3
Redesign UI with a focus on minimalism and improved navigation.
Assumption to check: User interface can feel cluttered
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to customize their profiles with additional fields and preferences.
Assumption to check: Limited customization options for user profiles
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
Log your flights, simulator and duty time. Import your airline roster and track your currency on the go. CrewLounge PILOTLOG is the most complete logbook app for commercial, military, navy and general aviation pilots.You can record 60 different items on a single flight, such as OOOI hours, crew list, fuel upload, delay code, training notes, etc. CrewLounge PILOTLOG syncs seamlessly desktop and mobile devices across different operating systems. Some of the features in this app: - record your flying hours in any timezone - automatic night calculation according to 8 different regulations - import your roster from CrewLounge Connect - import your journey log from various EFB apps. - database with 41,000 airfields, and extra packs for oil rigs, safari lodges, medical heliports, etc - check your landing requirements and qualifications - monitoring your flight and duty time limits and flat rate payment - record expenses and allowances - print 100 international logbook formats and official state forms - print 140 stunning reports, charts, maps and statistics CrewLounge PILOTLOG is a mobile companion app for the main desktop software. You must install the desktop app to take full advantage of this software. Additional information: This app is part of the CrewLounge AERO software suite for flight crew, flight attendants and training staff. You need to register with CrewLounge AERO to use this app. CrewLounge PILOTLOG comes with a free edition and paid subscriptions. We recommend starting with the free Student Edition. We want you to be happy with our app and our customer support services, before subscribing to any of the paid plans!
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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
Zustand
React Native Reanimated
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.
