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.
Thermal comfort is that particular state of mind that expresses satisfaction with the surrounding environment.
$1.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Thermo Hygrometer: 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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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
Assumption to check: Limited features compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Inconsistent user interface
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of customization options
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited user engagement
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Thermal comfort is that particular state of mind that expresses satisfaction with the surrounding environment. With Thermo Hygrometer we offer you the best tool with an optimal algorithm specialy created for the index THI (Thermohygrometric Index) that allows you to have an eye on these two factors, humidity and temperature, for a better life. Thermo Hygrometer gives you the outside temperature and humidity values in real-time with forecast for the next 10 days. See also the hourly chart of temperature and humidity for 10 days. Its unique design has been created to offer maximum visual index THI simplicity. [ Features ] • Real-time Hygrothermal Index and forecasts for the next 10 days • Hourly outside temperature and humidity and chart for 10 days • The best algorithm specialy created for the index THI • Weather conditions • Outside temperature indicator • External moisture indicator • Indicator latest data update • Temperature expressend in Celsius, Fahrenheit and Kelvin • Your GPS location is used to calculate the index THI • Save favorite locations (unlimited) • Intuitive Graphics • Ease to use [ Thermohygrometric Index Meaning] The Thermohygrometric Index (THI) is an index that aims to roughly calculate the Thom Index (heat discomfort) directly with temperature and relative humidity, thus excluding from the calculation the temperature the wet bulb. The THI, unlike the index of Thom, is an index which goes directly to a climate classification, rather than to a biometeoclimatica classification system, starting from specific hygrothermal values. It is valid both for extremely hot weather phases, as for very cold periods. With temperatures above 46°C, even with changes in relative humidity, the index always identifies the extreme class. The following table shows the temperature threshold with its bio-climatic categories or, rather, climatic. In this index (as for other indices taken into account) is not taken into account wind factor. [ Compatibility ] • Devices: all iPhone, iPad and iPod. • iOS: 9.3 or later. [ Supported languages ] • English, Italian, Spanish, French, German, Portuguesa, Dutch, Russian, Chinese, Japanese, Danish, Finnish, Norwegian and Swedish. [ Support ] If you like the app, don’t forget to leave us a review on the App Store. For suggestions please contact us at [email protected], or visit lionsapp.com.
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.