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
FieldNav Ag Maps: Field Finder
Find Any Field Instantly Using Legal Descriptions
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
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.
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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 FieldNav Ag Maps: Field Finder: 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
Provide offline maps feature for easier access in remote areas.
Assumption to check: Limited offline functionality
Validate with people who use this workflow before building.
Hypothesis 2
Implement advanced filtering options for better search results.
Assumption to check: Difficult search functionality
Validate with people who use this workflow before building.
Hypothesis 3
Introduce a rewards system for users to encourage app usage.
Assumption to check: Lack of user engagement
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to add photos and detailed comments on their experiences.
Assumption to check: Insufficient details on field reviews
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
Find Any Field Instantly Using Legal Descriptions FieldNav is the fastest way for farmers, agronomists, applicators, and truck drivers to locate fields using legal land descriptions. Simply type a legal description like: SW 12-8-37 NE 5-10-34 and FieldNav instantly shows the correct quarter section on the map. Then tap Navigate to open turn-by-turn directions in your preferred navigation app. No dropped pins. No guessing. No wrong driveways. Just type the legal and go. --- Built for Real Farm Operations FieldNav is designed specifically for agriculture and rural navigation where fields are identified by section, township, and range, not street addresses. Perfect for: • Farmers • Agronomists • Custom applicators • Grain truck drivers • Crop scouts • Irrigation managers --- Key Features Search by Legal Description Quickly find any quarter section using legal descriptions such as: SW 12-8-37 NW 25-10-34 FieldNav instantly displays the correct location. --- Navigate to Any Field Tap Navigate and launch turn-by-turn directions directly to the field. --- Set Field Entrances Mark the correct entrance to avoid wrong driveways and wasted time. Perfect for: • Harvest trucks • Fertilizer tenders • Custom applicators --- Save Fields & Organize Farms Create collections to organize fields by: • Farm name • Landlord • Crop type • Operation --- Field Notes & History Track important events directly on each field: • Spraying • Scouting notes • Rainfall • Harvest notes --- Share Field Locations Send field locations to employees, drivers, or agronomists instantly. --- Satellite Map with Section Grid See farmland clearly with satellite imagery and accurate section overlays. --- Weather Conditions View current conditions including rain and wind directly for each field location. --- Built by a Farmer FieldNav was created to solve a real problem faced by farmers every day — finding fields quickly using legal descriptions. --- Currently Available In Nebraska (more states coming soon) Privacy Policy: https://www.agworkssoftware.com/privacy Terms & Conditions: https://www.agworkssoftware.com/terms
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
@react-navigation/native
axios
expo-maps
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.
