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
Turf MD
TURF MD - An interactive reference tool for the identification and management of turfgrass diseases
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.5
4 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
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A product spec, screen plans, and build steps for your coding agent.
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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 Turf MD: 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
Add more detailed management solutions and user-generated tips.
Assumption to check: Limited disease management features compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Offer more value in free content to increase user engagement.
Assumption to check: In-app purchase for premium features may deter users
Validate with people who use this workflow before building.
Hypothesis 3
Implement more advanced filtering and sorting options for diseases.
Assumption to check: Search functionality can be improved
Validate with people who use this workflow before building.
Hypothesis 4
Redesign UI with modern aesthetics and improved navigation.
Assumption to check: User interface feels outdated
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
TURF MD - An interactive reference tool for the identification and management of turfgrass diseases. Turf MD was designed for golf course superintendents, sports turf managers, turf scientists, extension professionals, and anyone else responsible for turfgrass health. It includes peer-reviewed images, diagnostic keys, decision support tools, and recommendations to help users identify and treat diseases, plus a directory of turf extension sources for more information. The app’s content is based on three APS PRESS Books: Turfgrass Diseases, Third Edition (Richard W. Smiley, Peter H. Dernoeden, and Bruce B. Clarke); A Practical Guide to Turfgrass Fungicides (Richard Latin ; and additional images and keys found in the Turfgrass Diseases, Diagnosis and Management CD-Rom (Gail L. Schumann and James D. MacDonald), published by APS PRESS.
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
axios
react-native-elements
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.
