# VBS UV vs Sun Map Clock

The clearest difference is in-app purchases: VBS UV at none against Sun Map Clock's 2. Sun Map Clock's advantage is update cadence (fortnightly vs every 6 weeks) and iOS requirement (15.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Sun Map Clock sells 2 in-app purchases, starting at $15.00 per month. VBS UV asks for nothing beyond the download.

VBS UV ships an update every 6 weeks, Sun Map Clock fortnightly. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | VBS UV | Sun Map Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/vbs-uv-index/id1179934658/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 6 MB | 74 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mark Spaulding](https://appshunter.io/developer/1166710709) | [QAEE CONPUUTENG](https://appshunter.io/developer/1853582855) |

## What reviewers say

### VBS UV

[App page](https://appshunter.io/ios/app/vbs-uv-index/id1179934658)

This app provides UV-Index forecasts to help manage sun exposure. It offers a simple interface for users to check daily UV levels. More information about the VBS model is available online.

**Highlights:** UV-Index forecasts, Sun exposure management, Simple user interface, VBS model information link

**Features:** macOS Compatibility

**In-app purchases:** none


### Sun Map Clock

[App page](https://appshunter.io/ios/app/sun-map-clock-shadow-tracker/id6765796926)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $15.00 | per month |
| Yearly Subscription | $150.00 | per year |


## Frequently asked questions

### Is VBS UV free?

VBS UV is free to download, with no in-app purchases.

### Is Sun Map Clock free?

Sun Map Clock is free to download, with in-app purchases available.

### Do VBS UV or Sun Map Clock have ads?

Neither VBS UV nor Sun Map Clock shows ads.

### Which is updated more often, VBS UV or Sun Map Clock?

VBS UV ships an update every 6 weeks, and Sun Map Clock fortnightly. Most recently, VBS UV was updated on October 18, 2026 and Sun Map Clock on October 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*