Comparison

Linear BJJ vs Athyx

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Linear BJJ

Read full description

Linear BJJ is an AI training journal for Brazilian jiu-jitsu athletes. Just talk to Linear's AI via voice or chat, talk about rounds, techniques, questions, injuries, and training goals in one place. Linear turns those notes into practical next steps: what to drill, what patterns keep showing up, and where your game needs attention. Use Linear BJJ to: - Capture training notes after class or open mat - Chat with an AI assistant about your game - Use voice mode when typing is too slow - Build a scorecard from your training history - Track progress across journal entries - Keep your goals, style, and preferences in memory Linear BJJ is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. Talk with a qualified healthcare professional for medical advice, diagnosis, or treatment. Linear BJJ Pro includes AI chat, Voice AI, advanced BJJ tools, unlimited journal entries, athlete memory, and priority support. A subscription is required to use the app after signup. Start with a 14-day free trial. After the trial, Pro renews at $29.99/month or $199.99/year unless canceled before renewal. Manage or cancel your subscription in your App Store account settings. Terms of Use (EULA): https://www.linearbjj.com/terms Privacy Policy: https://www.linearbjj.com/privacy

About

Athyx

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
Read full description

Athyx captures lactate during training and is used as an estimate to guide training intensity. Track key training insights and view your sessions in a simple, fast interface built for athletes. EDUCATIONAL CONTENT The AI provides general information about training concepts and performance metrics. Content is designed to help users understand common patterns and terminology used in athletic training. SESSION HISTORY Review past sessions, including time, activity, and associated training data in a simple interface. Athyx products and services are not medical devices and are not intended to diagnose, treat, cure, monitor, or prevent any disease or medical condition. They are designed solely for general fitness and training purposes. The data provided is for informational use only and should not be considered medical advice. Do not make changes to your health, medication, nutrition, or training routines without consulting a qualified healthcare professional.

Screenshots

Linear BJJ4 screens
Athyx4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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

Scorecard2 real differences · 8 level
Linear BJJ versus Athyx: the parameters behind the verdict, then further details
ParameterLinear BJJAthyx
PriceFreeFree
Rating—2.3 (3 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—3 — better
Update frequencyFortnightlyEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS15.115.0 — better
Further details — not scored
Size37 MB19 MB
Age rating4+4+
DeveloperGeneral Dev, LLCAthyx, Inc.

In-app purchases

2 purchases

Linear BJJ

Subscriptions2
  • Linear BJJ Pro7 Days trial$29.991 Month
  • Linear BJJ Pro7 Days trial$199.991 Year
None

Athyx

No in-app purchases

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.

Other comparisons