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
Best Hunting Times
The #1 solunar table app for iPhone
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.0
59 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.
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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 included18 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 Best Hunting Times: map the core Weather 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 a more robust weather API for precise forecasts.
Assumption to check: Users often complain about the accuracy of hunting times.
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to set specific conditions for alerts.
Assumption to check: Limited customization options for alerts.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize data fetching and caching strategies.
Assumption to check: The app can be slow to load data.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce a social feature for users to share experiences and tips.
Assumption to check: Lack of community features for sharing hunting tips.
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
The #1 solunar table app for iPhone. Monthly view, weekly view, and daily view. Animated solar and lunar locations; Animated wind forecast. Determine Best Hunting Times for any date, any location. Best Hunting Time is the only iPhone app with Animated solar and lunar locations for any second and Animated wind forecast.. If you like hunting, have this app handy and it will provide you with the location-specific information to maximize your chances success and know exactly when the best hunting times will occur! + Location: Auto GPS or Manual Entry or Select from Map + Major & Minor Feeding / Activity Periods + Day ratings + Activity Index for the day rating + Weather condition / forecast (USA) + Moon rise / Moon set / Moon Transit times + Moon Phase Data + Sunrise / Sunset / Sun Transit times + Day / Weekly /Monthly view + Date selection for checking Solunar data in advance + Any Date / Location + Check timezone settings. + Current animal activity index as an icon badge right on your Home Screen + Graphical sun and moon simulator + Compass + Hourly Wind forecast (USA) for scent control + Build your own favorite location List + Click or swipe This app is the perfect planning tool for outdoor activities. Click "Simulate" button on the Hunting Time page, see the cool new feature of graphical sun and moon simulator! All information are calculated real time precisely based on the approved Solunar theory. Q: Why there is a red circle on the icon? A: This is a new feature we just added in the new version: app icon badge to indicate the daily animal activity index, which enables quick peek without launching the app. For example, a red 4 mean today the animal activity index is 4 out of 6. You can turn the badge on and off by going to Settings->Notification->Best Hunting Times. Be sure to check our "Hunting Call" app.
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-navigation
expo-location
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.
