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
SledNH 2026
**This purchase allows you to access up-to-date SledNH trail information for the 2025-2026 winter season
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.2
5 ratings · Top 30%
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
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A product spec, screen plans, and build steps for your coding agent.
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What's included15 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 SledNH 2026: 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
Implement offline maps download feature.
Assumption to check: Limited offline functionality for maps
Validate with people who use this workflow before building.
Hypothesis 2
Add voice navigation with TTS.
Assumption to check: Lack of voice navigation
Validate with people who use this workflow before building.
Hypothesis 3
Provide more comprehensive trail information and user reviews.
Assumption to check: Insufficient trail details
Validate with people who use this workflow before building.
Hypothesis 4
Enhance search and discovery features for trails.
Assumption to check: Difficult to discover new trails
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
**This purchase allows you to access up-to-date SledNH trail information for the 2025-2026 winter season. A new purchase will be required for the 2026-2027 season.** Out exploring NH on your snowmobile? Take your own mobile trail assistant for the ride! 7,000 miles of trails in your pocket! The New Hampshire Snowmobile Association (NHSA) trail map makes navigation a snap. Working with or WITHOUT mobile data coverage, you will be able to enjoy the app’s navigation function no matter where you are on the trails. The SledNH app gives you access to the following *OFFLINE* features, anywhere, anytime, even in areas without cell coverage: ► See your location on the map through your phone’s GPS signal ► View nearby clubhouses, snack shacks, parking, scenic vistas, gas stations and services ► Access trail condition info at the time of your last data connection ► See the distance between you and a specific point ► Quickly save and load routes When connected to cell or Wi-Fi enjoy these additional *ONLINE* features: ► Keep an eye on updated trail status for the best riding experience ► Easily meet friends by privately sharing your position with them ► Plan complete trips and easily share with friends Welcome to the SledNH Trails 2026 mobile experience - enjoy the ride! Notes: ►Continued use of the GPS and location sharing running in the background can significantly increase battery consumption. It is recommended to toggle it off when not needed to improve autonomy.
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
Redux
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.
