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
SimpleHiker
0
$8.99 · In-app purchases
PRICE
$8.99
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'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 SimpleHiker: 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
Create a simple and clean interface with only essential features.
Assumption to check: Users often find navigation apps cluttered and confusing.
Validate with people who use this workflow before building.
Hypothesis 2
Implement reliable location tracking and real-time data.
Assumption to check: Real-time updates can be inaccurate, leading to frustration.
Validate with people who use this workflow before building.
Hypothesis 3
Offer offline maps and trail downloads.
Assumption to check: Many apps do not support offline functionality, limiting use in remote areas.
Validate with people who use this workflow before building.
Hypothesis 4
Provide clear explanations of premium features and user value.
Assumption to check: In-app purchases can be unclear or frustrating.
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
0. Let the app download the USGS contour maps of your area. 1. Set a destination and press "Start Hike." 2. Hike. 3. See your progress on the map. 4. Press the arrow button to orient the map where you're facing. 5. Take a photo to mark a waypoint on the map. 6. Press "Return Home" and the app will guide you back to the start. Simple. SimpleHiker. • Your lock screen will also show the hike progress. • Even if you lose connection to the internet, the app still works via GPS as long as you let it download the local maps before you left internet range. • Past hikes and photo waypoints are automatically saved in your local phone DB and your private iCloud storage. You can delete them at any time. • No subscription, no in-app purchases, ever, ever, ever. • No data is shared to anyone, ever. We do not collect any information except the crash reports Apple sends us.
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
react-navigation
axios
@react-native-community/geolocation
react-native-maps
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.
