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
Leafscan
Leafscan is a leaf area meter in your pocket! Use your mobile device to take a picture of a leaf and instantly get its area
$19.99
PRICE
$19.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
6 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.
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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 included
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 Leafscan: map the core Productivity 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
Integrate a larger, constantly updated plant database.
Assumption to check: Limited plant database leading to incorrect identifications
Validate with people who use this workflow before building.
Hypothesis 2
Implement machine learning improvements for better accuracy.
Assumption to check: Inconsistency in image recognition results
Validate with people who use this workflow before building.
Hypothesis 3
Add social features to allow users to share findings and tips.
Assumption to check: No community features or sharing options
Validate with people who use this workflow before building.
Hypothesis 4
Offer a freemium model with basic features for free to attract more users.
Assumption to check: High price point compared to competitors
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
Leafscan is a leaf area meter in your pocket! Use your mobile device to take a picture of a leaf and instantly get its area. Keep track of your measurements in a notebook and export it as a CSV file via AirDrop, email, and more. You’ll only need a white background with reference markers, which you can make yourself or download free from our website (http://www.leafscanapp.com). Features: - Measure leaf surface area with high accuracy - Log your measurements and export them as a CSV file - Measure multiple leaves in one photo at once - Take pictures using the camera or load them from the photos library - Holes, tears, and missing tissue can be excluded from the total area - Automatically correct for photos taken at an angle - Customize the measurement units (mm, cm, or in) - Customize the reference length and detection thresholds Some of the icons in this app were provided by https://icons8.com.
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
Expo Camera
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
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.
