# Sunlight Tracking by Riseroo vs Vitamin D™ · UV Index

The clearest difference is in-app purchases: Sunlight Tracking by Riseroo at none against Vitamin D™ · UV Index's 6. Sunlight Tracking by Riseroo also leads on review sentiment (50% vs 29%) and update cadence (every 6 days vs every 4 weeks). Vitamin D™ · UV Index's advantage is rating (5.0 vs 4.6). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Vitamin D™ · UV Index sells 5 in-app purchases, starting at $2.99 per month. Sunlight Tracking by Riseroo asks for nothing beyond the download.

Vitamin D™ · UV Index holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Sunlight Tracking by Riseroo has 26 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 50% of Sunlight Tracking by Riseroo's written reviews are positive against 29% of Vitamin D™ · UV Index's, so the app with the better star average is not the one people write more warmly about.

Sunlight Tracking by Riseroo ships an update every 6 days, Vitamin D™ · UV Index every 4 weeks. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Sunlight Tracking by Riseroo | Vitamin D™ · UV Index |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (26 ratings)](https://appshunter.io/ios/app/sunlight-tracking-by-riseroo/id6446605216/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/vitamin-d-uv-index/id6470038527/reviews)** |
| Number of ratings | **26** | 1 |
| Positive reviews | **50.0% of reviews** | 28.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 4 weeks |
| Monetization | **Free** | Freemium |
| Size | 17 MB | 24 MB |
| Requires iOS | **16.4** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Koshenka Labs LLC](https://appshunter.io/developer/1792926006) | [Eloi Canals](https://appshunter.io/developer/1538407230) |

## What reviewers say

### Sunlight Tracking by Riseroo

[App page](https://appshunter.io/ios/app/sunlight-tracking-by-riseroo/id6446605216)

This app helps you establish a healthy morning sunlight exposure routine. It uses your iPhone's camera to measure sunlight and suggests optimal times for your daily sessions, tracking your progress and streaks.

**Highlights:** Morning sunlight exposure tracking, Camera-based sunlight measurement, Optimal session time suggestions, Daily progress and streak tracking, Personalized insights, Circadian rhythm regulation support

**Features:** macOS Compatibility

**In-app purchases:** none


### Vitamin D™ · UV Index

[App page](https://appshunter.io/ios/app/vitamin-d-uv-index/id6470038527)

This app provides real-time UV index monitoring and personalized sun exposure recommendations to help you safely harness the sun's energy for optimal Vitamin D synthesis. It offers tailored sun protection advisories and customizable alerts for sun safety.

**Highlights:** Real-time UV index forecasting, Personalized sun exposure recommendations, Sun protection advisories, Vitamin D synthesis timer, Customizable safety alerts, Health monitoring app integration

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vitamin D™ Pro | $2.99 | per month |
| Vitamin D™ Pro | $2.99 | per month |
| Vitamin D™ Pro | $19.99 | per year |
| Vitamin D™ Pro | $19.99 | per year |
| Vitamin D™ Pro | $49.99 | one-time |


## Frequently asked questions

### Is Sunlight Tracking by Riseroo free?

Sunlight Tracking by Riseroo is free to download, with no in-app purchases.

### Is Vitamin D™ · UV Index free?

Vitamin D™ · UV Index is free to download, with in-app purchases available.

### Which has better reviews, Sunlight Tracking by Riseroo or Vitamin D™ · UV Index?

Vitamin D™ · UV Index is rated higher. Sunlight Tracking by Riseroo averages 4.6 out of 5 from 26 ratings, while Vitamin D™ · UV Index averages 5.0 from 1 ratings.

### Do Sunlight Tracking by Riseroo or Vitamin D™ · UV Index have ads?

Neither Sunlight Tracking by Riseroo nor Vitamin D™ · UV Index shows ads.

### Which is updated more often, Sunlight Tracking by Riseroo or Vitamin D™ · UV Index?

Sunlight Tracking by Riseroo ships an update every 6 days, and Vitamin D™ · UV Index every 4 weeks. Most recently, Sunlight Tracking by Riseroo was updated on October 24, 2026 and Vitamin D™ · UV Index on October 20, 2026.

---

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