App Overview

UV Index: Safe Sun icon

UV Index: Safe Sun

LionsApp di Nallbati Elton · Weather

Never let your guard down.

$2.99 · In-app purchases

PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.9
11 ratings · Top 5%

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.

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.

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

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for UV Index: Safe Sun: 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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App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

Screenshots

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App Store description

Never let your guard down. The app shows you the ultraviolet radiation level in your location and helps you understand how to protect yourself while in the sun. The higher the UV Index value, the greater the potential risk to your skin and eyes. The app provides clear information about the current level, weather conditions, and recommended protection. ### FEATURES • Current UV Index • Daily and hourly UV forecasts • Chart showing UV levels throughout the day • Current location detection • Search for cities around the world • Unlimited saving of favorite locations • Weather conditions • Protection recommendations based on the UV Index • Guidance for umbrellas, T-shirts, hats, and sunglasses • Light and dark modes • Support for iPhone and iPad ### HOW IT WORKS Turn on Location Services and make sure your device is connected to the Internet. The app will detect your location and show the UV Index for the selected location. You can also search for other cities, save favorite locations, and check the forecast for the following days. The UV Index was developed to raise awareness of the risks associated with excessive exposure to solar radiation through a collaboration between the World Health Organization, the United Nations Environment Programme, the World Meteorological Organization, and the International Commission on Non-Ionizing Radiation Protection (ICNIRP). The information provided by the app is for informational purposes only and does not replace the advice of a doctor or qualified professional. ### SUPPORT For assistance, email us at: [email protected] You can also visit: www.lionsapp.com If you find the app useful, please leave us a review on the App Store. Thank you for your support.

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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

Allow users to manually add locations.

Assumption to check: Limited location settings can frustrate users.

Validate with people who use this workflow before building.

Hypothesis 2

Include home screen widgets for instant UV index viewing.

Assumption to check: No widget support for quick access.

Validate with people who use this workflow before building.

Hypothesis 3

Implement alerts for significant UV index changes.

Assumption to check: Lack of notifications for changing UV levels.

Validate with people who use this workflow before building.

Hypothesis 4

Provide more educational content about UV risks and protection.

Assumption to check: Insufficient detailed UV index explanations.

Validate with people who use this workflow before building.

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
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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.