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
Indoor Thermometer
Indoor Thermometer helps you understand your indoor climate at a glance — accurate Celsius and Fahrenheit readings, weather context, outfit suggestions, and mood-setting wallpapers
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.2
2,521 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 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 Indoor Thermometer: 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
Include extended forecasts and alerts for indoor climate changes.
Assumption to check: Limited features compared to dedicated weather apps
Validate with people who use this workflow before building.
Hypothesis 2
Enhance UI with more engaging visuals and animations.
Assumption to check: User interface may feel basic
Validate with people who use this workflow before building.
Hypothesis 3
Implement calibration settings for better accuracy.
Assumption to check: Inaccurate readings in certain environments
Validate with people who use this workflow before building.
Hypothesis 4
Introduce gamification elements to encourage regular app use.
Assumption to check: Lack of user engagement features
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
Indoor Thermometer helps you understand your indoor climate at a glance — accurate Celsius and Fahrenheit readings, weather context, outfit suggestions, and mood-setting wallpapers. Whether you're checking nursery conditions, planning what to wear, or sharing a cozy sunset card with friends, Indoor Thermometer brings clarity and style to everyday temperature. Key features Indoor temperature (°C / °F): Clear, easy-to-read room temperature with fast refresh and simple toggle between Celsius and Fahrenheit. Weather temperature: See current outdoor weather alongside indoor readings so you can compare and plan. Wallpaper save & set: Stunning themed wallpapers (Stars, Storm, Sunny, Snow, Sunset). Preview, save to your device, and set as lock/home screen. Outfit & clothing recommendations: Smart, human-friendly suggestions (e.g., “Light jacket”, “Layer up”, “Shorts & tee”) based on your indoor and outdoor temps. Seasonal lifestyle tips: Handy tips for comfort and health — from humidity control to seasonal sleep and plant-care suggestions. Share temperature cards: Create beautiful, shareable temperature cards (with wallpaper backgrounds) to send by message or social media. Simple, privacy-first design: No intrusive permissions required for core features; minimal permissions only when you explicitly save wallpapers or share cards. Privacy Policy : https://indoorthermometerpro.blogspot.com/2025/09/privacy-policy-for-indoor-thermometer.html Terms Condition : https://indoorthermometerpro.blogspot.com/2025/09/terms-conditions-for-indoor-thermometer.html EULA : https://indoorthermometerpro.blogspot.com/2025/09/end-user-license-agreement-eula-of.html
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
axios
@react-native-community/netinfo
victory-native
BUILD KIT DIFFICULTY
Starter
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.
