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
AvyPal
AvyPal is an avalanche awareness safety app for the iPhone.
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 ratings · Top 5%
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
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 included16 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 AvyPal: map the core Sports 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
Enhance community features to allow user-generated content and engagement.
Assumption to check: Limited community interaction features
Validate with people who use this workflow before building.
Hypothesis 2
Implement user profiles with customizable settings.
Assumption to check: Lack of personalization options
Validate with people who use this workflow before building.
Hypothesis 3
Provide more detailed analytics and tracking options.
Assumption to check: Inconsistent workout tracking
Validate with people who use this workflow before building.
Hypothesis 4
Improve UI with modern design trends and better usability.
Assumption to check: Basic UI design
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
AvyPal is an avalanche awareness safety app for the iPhone. The AvyPal phone app can assist backcountry travelers in identifying potential avalanche terrain. AvyPal is a simple "see through" app that uses the phone's camera view to let you view the terrain you are approaching. Three different modes are available to fit the backcountry situations you often encounter: Fall Line Mode - Shows the angle and avalanche risk of a slope you intend to descend, or ascend. Slope Mode - Shows the angle and avalanche risk of a slope you intend to cross. GPS Mode - Uses GPS data to audibly alert you if you are descending or ascending a slope angle that is associated with avalanche risk. Audible alerts are given every 5 seconds if in avalanche terrain. A graph is also shown in the mode so you can review if you have recently travelled in dangerous terrain. AvyPal uses color-coded indicators to indicate the avalanche risk of backcountry terrain. Red indicates a high probability avalanche slope (30-45 degrees). Yellow indicates a lower probability avalanche slope (25-30 degrees or 45-50 degrees). Green indicates slopes of less likely avalanche potential (less than 25 degrees or greater than 50 degrees). AvyPal is a backcountry tool for help in making route choice decisions. AvyPal does not replace professional avalanche safety training, experience or good judgement. Get avalanche awareness and safety training before traveling in the backcountry. Have fun in the backcountry. And if you have a question about the safety of the snow slope ahead ... don't hesitate to ask your AvyPal for advice!
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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.
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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.
