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
The Thermometer -Digital-
This is a simple digital temperature and humidity meter app.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
510 ratings · Top 15%
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 included14 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 The Thermometer -Digital-: 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
Incorporate advanced features like radar maps and severe weather alerts.
Assumption to check: Limited features compared to full-fledged weather apps.
Validate with people who use this workflow before building.
Hypothesis 2
Implement GPS-based location services for real-time updates.
Assumption to check: Lacks location tracking for accurate data.
Validate with people who use this workflow before building.
Hypothesis 3
Offer more valuable premium content like extended forecasts.
Assumption to check: Premium features may not justify the cost for some users.
Validate with people who use this workflow before building.
Hypothesis 4
Enhance UI with better graphics and animations.
Assumption to check: User interface may feel simplistic.
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 is a simple digital temperature and humidity meter app. It provides you with outdoor temperature, humidity, and current time. The app offers automatic updates at regular intervals and real-time information, making it convenient to use. You can obtain temperature and humidity data for any location worldwide. What can you do with "The Thermometer" App? - Sleek design that provides instant visibility of outdoor temperature, humidity, and current time. - Automatic updates to keep you informed about the latest outdoor temperature and humidity. - Option to select your desired location for accurate data. - Customizable color scheme, allowing you to personalize the background and text colors. - Ability to select between Celsius and Fahrenheit. The premium plan allows you to use the app more comfortably. What can you do with the Premium Plan? - A function to save multiple locations and instantly check the temperature and humidity of each - No ads "The Thermometer" app allows you to quickly check the outdoor temperature and humidity while also functioning as a clock. With the ability to customize the colors of the app, you can create a stylish and personalized display that complements your interior design. Terms of Use： https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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.
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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.
