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
737 Flight Simulator
- Top #26 game in UK!
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.6
80 ratings · Top 50%
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
Make this idea yours
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 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 737 Flight Simulator: map the core Entertainment 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
Offer a wider variety of flight scenarios and aircraft.
Assumption to check: Limited flight scenarios compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Ensure robust performance and thorough testing.
Assumption to check: Some users report crashes during simulations.
Validate with people who use this workflow before building.
Hypothesis 3
Implement clearer pricing and feature explanations.
Assumption to check: In-app purchases can be confusing for users.
Validate with people who use this workflow before building.
Hypothesis 4
Revamp UI with modern design principles.
Assumption to check: User interface feels outdated for some users.
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
- Top #26 game in UK! - Top #10 game in 32 countries (entertainment) - Featured by Apple in over 913 places in iTunes Enjoy a fully featured 737 flight simulator. We give you a fantastic opportunity to see what real pilots encounter in critical situations. There are 6 different regions to explore each having different real life scenarios that happened in the past. Do you remember famous president crash in Smolensk, Captain Wrona landing in Warsaw or the Hudson River emergency landing? Try these missions yourself and see if you can save the plane! Features: - realistic plane crash simulations - real life missions - real indicators - time and weather conditions - tutorial missions - new FREE missions with each update - 3D and side view cameras - great music - Apple Watch support! - and much more... We would like to hear your opinion, please rate and send your feedback to [email protected] And one more thing: WE ARE PASSIONATE ABOUT FLYING AND WE LOVE THIS GAME! Facebook: https://www.facebook.com/737flightsimulator We dedicate this game to all who lost their lives or suffered injuries in airplane crashes. Attribution: © OpenStreetMap contributors - http://www.openstreetmap.org/ Please note that this is just a game. Airplanes are still the most safe mean of transport. Any similarity between planes used in this game and real airliners is accidental. Our intention is not to show any airline in a bad light.
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/native
expo-image
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.
