# Linear BJJ vs Athyx

The clearest difference is in-app purchases: Athyx at none against Linear BJJ's 2. Athyx also leads on update cadence (every 2 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Linear BJJ sells 2 in-app purchases, starting at $29.99 per month. Athyx asks for nothing beyond the download.

Linear BJJ ships an update fortnightly, Athyx every 2 days. The most recent releases landed on October 10, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Linear BJJ | Athyx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.3 (3 ratings)](https://appshunter.io/ios/app/athyx/id6760621883/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | — | Free |
| Size | 37 MB | 19 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [General Dev, LLC](https://appshunter.io/developer/1885246032) | [Athyx, Inc.](https://appshunter.io/developer/1885372082) |

## What reviewers say

### Linear BJJ

[App page](https://appshunter.io/ios/app/linear-bjj/id6760601252)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Linear BJJ Pro | $29.99 | per month |
| Linear BJJ Pro | $199.99 | per year |


### Athyx

[App page](https://appshunter.io/ios/app/athyx/id6760621883)

This app helps athletes estimate training intensity by capturing lactate data. It provides insights into training sessions and offers educational content on performance metrics. Review your past activities and understand training patterns with a simple interface.

**Highlights:** Lactate data capture, Training intensity guidance, Performance metric insights, Session history review, Educational training content, Simple interface for athletes

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

**In-app purchases:** none


## Frequently asked questions

### Is Linear BJJ free?

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

### Is Athyx free?

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

### Do Linear BJJ or Athyx have ads?

Neither Linear BJJ nor Athyx shows ads.

### Which is updated more often, Linear BJJ or Athyx?

Linear BJJ ships an update fortnightly, and Athyx every 2 days. Most recently, Linear BJJ was updated on October 10, 2026 and Athyx on October 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.*