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
Thermometer: Local Temperature
Never leave home unprepared again.
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.0
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 included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 Thermometer: Local Temperature: 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 additional weather data like humidity, wind speed, and alerts.
Assumption to check: Limited features compared to other weather apps
Validate with people who use this workflow before building.
Hypothesis 2
Implement push notifications for severe weather alerts.
Assumption to check: No severe weather alerts
Validate with people who use this workflow before building.
Hypothesis 3
Enhance UI with more engaging visuals and animations.
Assumption to check: Basic UI design
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to save multiple locations and quickly switch between them.
Assumption to check: Limited location support
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
Never leave home unprepared again. Thermometer indicates the outside temperature and local weather conditions and any desired location in real time, hourly and daily forecasts. Make sure you have turned on the Location Services of your device and that you are connected to the Internet. At this point the App will detect your geographic position. The display will show the name of the location and the current temperature, also indicating the weather conditions. Data is provided by weather provider weatherstack.com [FEATURES] - Outdoor temperature measurement - Feels like outside temperature - Weather conditions - Hourly and daily weather forecast (Pro version) - Unlimited favorite locations - Temperature in Celsius (°C), Fahrenheit (°F) and Kelvin (K) - Reliable data (weather provider data weatherstack.com) - Intuitive graphics - Ease of use [SUPPORT] If you need help, feel free to contact us at [email protected], or visit our official website www.lionsapp.com If you like the app, don't forget to leave us a review on the App Store.
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
Zustand
react-navigation
expo-location
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.
