# Bivryn Biological Intelligence vs MARYN

The clearest difference is update cadence: MARYN at every 3 days against Bivryn Biological Intelligence's every 11 days. MARYN also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Bivryn Biological Intelligence sells 2 in-app purchases, starting at $14.99 per month and MARYN sells 2 in-app purchases, starting at $19.00 per month. Whichever you choose, the download price is not the number that matters.

Bivryn Biological Intelligence ships an update every 11 days, MARYN every 3 days. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Bivryn Biological Intelligence | MARYN |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 3 days** |
| Size | 24 MB | 76 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Amita Dhand](https://appshunter.io/developer/1437246199) | [MT Fitness OU](https://appshunter.io/developer/6779620986) |

## What reviewers say

### Bivryn Biological Intelligence

[App page](https://appshunter.io/ios/app/bivryn-biological-intelligence/id6774502017)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bivryn Premium Monthly | $14.99 | per month |
| Bivryn Premium Annual | $99.99 | per year |


### MARYN

[App page](https://appshunter.io/ios/app/maryn/id6779620984)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MARYN Pro Monthly | $19.00 | per month |
| MARYN Pro Yearly | $190.00 | per year |


## Frequently asked questions

### Is Bivryn Biological Intelligence free?

Bivryn Biological Intelligence is free to download, with in-app purchases available.

### Is MARYN free?

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

### Do Bivryn Biological Intelligence or MARYN have ads?

Neither Bivryn Biological Intelligence nor MARYN shows ads.

### Which is updated more often, Bivryn Biological Intelligence or MARYN?

Bivryn Biological Intelligence ships an update every 11 days, and MARYN every 3 days. Most recently, Bivryn Biological Intelligence was updated on September 10, 2026 and MARYN on September 17, 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.*