# Sunned vs Sun Day Tracker

The clearest difference is rating: Sun Day Tracker at 4.6 against Sunned's 3.7. Sun Day Tracker also leads on ratings volume (28 vs 3) and iOS requirement (17.0 vs 26.0). Sunned's advantage is review sentiment (100% vs 83%). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sun Day Tracker holds the better App Store score, 4.6 against 3.7. That said, the two scores are not equally well evidenced: Sun Day Tracker has 28 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 100% of Sunned's written reviews are positive against 83% of Sun Day Tracker's, so the app with the better star average is not the one people write more warmly about.

Sunned ships an update every 4 weeks, Sun Day Tracker monthly. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Sunned | Sun Day Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/sunned-vitamin-d-and-sun-timer/id6741027703/reviews) | **[4.6 (28 ratings)](https://appshunter.io/ios/app/sun-day-tracker/id6748545544/reviews)** |
| Number of ratings | 3 | **28** |
| Positive reviews | **100.0% of reviews** | 83.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Monthly |
| Monetization | Free | Free |
| Size | 4 MB | 1 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tindrels LLC](https://appshunter.io/developer/1665283532) | [permissionless tech, llc](https://appshunter.io/developer/1824145893) |

## What reviewers say

### Sunned

[App page](https://appshunter.io/ios/app/sunned-vitamin-d-and-sun-timer/id6741027703)

Monitor your vitamin D production from sun exposure and receive alerts to prevent sunburn. This app estimates your vitamin D levels and tracks supplementation, providing daily sunrise and sunset notifications.

**Highlights:** Vitamin D generation tracking, Sunburn prevention alerts, Estimated vitamin D level increase, Sunrise and sunset notifications, Supplementation tracking

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

**In-app purchases:** none


### Sun Day Tracker

[App page](https://appshunter.io/ios/app/sun-day-tracker/id6748545544)

Monitor your daily vitamin D absorption from sunlight exposure. This straightforward application helps you keep track of your sun-related vitamin D intake.

**Highlights:** Track daily vitamin D intake, Sunlight exposure monitoring, Simple interface, Daily tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is Sunned free?

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

### Is Sun Day Tracker free?

Sun Day Tracker is free to download, with no in-app purchases.

### Which has better reviews, Sunned or Sun Day Tracker?

Sun Day Tracker is rated higher. Sunned averages 3.7 out of 5 from 3 ratings, while Sun Day Tracker averages 4.6 from 28 ratings.

### Do Sunned or Sun Day Tracker have ads?

Neither Sunned nor Sun Day Tracker shows ads.

### Which is updated more often, Sunned or Sun Day Tracker?

Sunned ships an update every 4 weeks, and Sun Day Tracker monthly. Most recently, Sunned was updated on November 4, 2026 and Sun Day Tracker on November 5, 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.*