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
B767 Limits
What’s inside
$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.
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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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included15 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 B767 Limits: map the core Reference 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
Create a community forum for users to discuss tips and provide support.
Assumption to check: Limited user feedback and community support.
Validate with people who use this workflow before building.
Hypothesis 2
Simplify the UI and provide guided tutorials.
Assumption to check: Potentially confusing user interface for beginners.
Validate with people who use this workflow before building.
Hypothesis 3
Include tooltips and detailed descriptions for each calculation.
Assumption to check: Lack of detailed calculations and explanations.
Validate with people who use this workflow before building.
Hypothesis 4
Offer a one-time purchase option for users who prefer not to subscribe.
Assumption to check: Subscription model can be off-putting.
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
What’s inside • Crosswind limits for takeoff and landing (with LVP notes) • Flap placard speeds (VFE) • CG envelope (%MAC) with safe defaults and JSON-driven values • RVSM on-ground and in-flight limits • Autoland wind limits (HW/XW/TW) • LVO minima and RVR conversion • VAPP helper (FCTM logic for wind additives and gusts) • WX tab: global METAR/TAF lookup (NOAA)* Design • Clean interface, large type, and monospaced digits where they matter • Fully offline for all limits and tables • No accounts, no analytics, no ads Network Internet is required only for the WX tab (METAR/TAF via NOAA). Disclaimer Always verify against your current AFM/FCOM, company procedures, and official weather sources. This app is for quick reference only and is not affiliated with Boeing.
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
Supabase
react-native-paper
expo-router
react-hook-form
BUILD KIT DIFFICULTY
Starter
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.
