# My Bio Age vs RayLimit

The clearest difference is in-app purchases: My Bio Age at none against RayLimit's 2. My Bio Age also leads on update cadence (daily vs every 3 months). RayLimit's advantage is iOS requirement (18.6 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. RayLimit sells 2 in-app purchases, starting at $3.99 per month. My Bio Age asks for nothing beyond the download.

My Bio Age ships an update daily, RayLimit every 3 months. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | My Bio Age | RayLimit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (15 ratings)](https://appshunter.io/ios/app/my-bio-age/id6754407518/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 3 months |
| Monetization | Free | — |
| Size | 25 MB | 140 MB |
| Requires iOS | 26.0 | **18.6** |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Graeme Rycyk](https://appshunter.io/developer/969564292) | [Teo Udovcic](https://appshunter.io/developer/1611085313) |

## What reviewers say

### My Bio Age

[App page](https://appshunter.io/ios/app/my-bio-age/id6754407518)

This app analyzes your Apple Health data to provide a comprehensive biological age score. It features an on-device AI coach for personalized health insights and a dashboard visualizing key metrics like recovery and stress resilience.

**Highlights:** Biological age score from 12 health metrics, On-device AI health question answering, Key metrics dashboard (Recovery, Stress, Circadian), Weekly health insights digest, Apple Watch companion app, Blood pressure tracking integration, Pacemaker user support

**Features:** Apple Watch app

**In-app purchases:** none


### RayLimit

[App page](https://appshunter.io/ios/app/raylimit-sun-exposure-timer/id6759309534)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RayLimit Premium | $3.99 | per month |
| RayLimit Premium | $19.99 | per year |


## Frequently asked questions

### Is My Bio Age free?

My Bio Age is free to download, with no in-app purchases.

### Is RayLimit free?

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

### Do My Bio Age or RayLimit have ads?

Neither My Bio Age nor RayLimit shows ads.

### Which is updated more often, My Bio Age or RayLimit?

My Bio Age ships an update daily, and RayLimit every 3 months. Most recently, My Bio Age was updated on October 30, 2026 and RayLimit on October 31, 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.*