# Rays vs SunVitD

The clearest difference is iOS requirement: Rays at 15.1 against SunVitD's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Rays sells 2 in-app purchases, starting at $4.99 per month and SunVitD sells 1 in-app purchase, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Rays | SunVitD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (7 ratings)](https://appshunter.io/ios/app/rays-auto-vitamin-d-tracking/id6752499967/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 58 MB | 3 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Rays Health Technologies LLC](https://appshunter.io/developer/1829292925) | [AWMB Sp. z o.o.](https://appshunter.io/developer/1896247722) |

## What reviewers say

### Rays

[App page](https://appshunter.io/ios/app/rays-auto-vitamin-d-tracking/id6752499967)

Automatically tracks your body's vitamin D synthesis from sun exposure. Get personalized recommendations for optimal timing and duration to maintain energy, mood, and skin health year-round without manual logging.

**Highlights:** Automatic vitamin D synthesis tracking, Personalized health intelligence, Smart sun exposure recommendations, Progress tracking and health insights, Apple Health integration, Minimal battery usage

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rays - Auto Vitamin D Tracker | $4.99 | per month |
| Rays - Auto Vitamin D Tracker | $19.99 | per year |


### SunVitD

[App page](https://appshunter.io/ios/app/sunvitd/id6766237761)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SunVitD Pro Monthly | $3.99 | per month |


## Frequently asked questions

### Is Rays free?

Rays is free to download, with in-app purchases available.

### Is SunVitD free?

SunVitD is free to download, with in-app purchases available.

### Do Rays or SunVitD have ads?

Neither Rays nor SunVitD shows ads.

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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.*