UV Light vs Hardness Conversion Master
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
UV Light
This app provides real-time UV index readings and forecasts for your location. It offers personalized sun protection advice and color-coded protection levels to help you stay safe in the sun. Enjoy sunny days with confidence and protect your skin.
- Real-time UV index readings
- 24-hour UV forecast
- Peak UV alerts
- Color-coded protection levels
- Personalized safety recommendations
- Intuitive interface
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UV Light helps you stay protected from harmful UV rays. Get instant UV index readings for your location, see daily trends, and receive personalized sun protection advice. Know when it's safe to enjoy the sun and when to take cover. Simple, beautiful, and essential for healthy skin. Features: • Real-time UV index for your location • 24-hour UV forecast with peak alerts • Color-coded protection levels • Personalized safety recommendations • Clean, intuitive interface Download UV Light and make every sunny day a safe one. This app is using the standard Apple Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Hardness Conversion Master
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A professional hardness conversion tool designed for mechanical engineering, metal heat treatment, and quality management, providing quick, stable, and traceable engineering reference data. **Key Features** 1. **Industrial-Grade Precision** The conversion logic is based on ASTM E140 / ASTM A370 standards, utilizing high-density reference points and linear interpolation to deliver stable and reproducible conversion results. 2. **Flexible Input and Real-Time Synchronization** Allows direct input in any hardness field (e.g., HRC / HV / HBW), with real-time conversion across other units, enhancing on-site operational efficiency. 3. **Physical Range Protection Mechanism** Built-in effective range checks for each scale, displaying "No Reference Value" when out of range, reducing the risk of misinterpretation. 4. **Customizable Interface** Enables toggling unit displays and drag-and-drop sorting to create a workspace tailored to individual or production line processes. 5. **Image Conversion (Beta)** Supports photo/album import, area selection recognition, result comparison, and manual correction, suitable for quick conversion of reports and on-site records. 6. **Batch Conversion** Allows multiple data entries for rapid conversion, retaining the last used unit preference to minimize repetitive actions. **Supported Units** - Rockwell: HRC, HRA, HRB, HRD, HRF - Superficial Rockwell: HR15N, HR30N, HR45N, HR15T, HR30T, HR45T - Brinell: HB, HBW - Vickers: HV - Tensile Strength: MPa
Screenshots
Verdict
The clearest difference is ads: UV Light at none against Hardness Conversion Master's shown. UV Light also leads on iOS requirement (15.0 vs 17.6). Hardness Conversion Master's advantage is update cadence (every 3 days vs fortnightly). On price, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. UV Light sells 3 in-app purchases, starting at $4.99 per 7 days and Hardness Conversion Master sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
UV Light ships an update fortnightly, Hardness Conversion Master every 3 days. The most recent releases landed on October 20, 2026 and October 5, 2026 respectively.
| Parameter | UV Light | Hardness Conversion Master |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (6 ratings) — better | — |
| Number of ratings | 6 — better | — |
| Update frequency | Fortnightly | Every 3 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 15 MB | 259 MB |
| Age rating | 4+ | 4+ |
| Developer | 明航 李 | POYU WANG |
In-app purchases
UV Light
- Unlimited access$4.997 Days
- Unlimited access$24.991 Year
- Unlimited access$49.99
Hardness Conversion Master
- Unlock Pro$1.99
Questions
Is UV Light free?
Is Hardness Conversion Master free?
Do UV Light or Hardness Conversion Master have ads?
Which is updated more often, UV Light or Hardness Conversion Master?
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