Muscle Tracker Mobile vs Athyx
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Muscle Tracker Mobile
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"Muscle Tracker" is a system designed for conducting sessions in which the data recorded using Callibri devices are transferred to a mobile application. In the application it is possible to save and view the results of sessions, filter them by date. The mobile application is part of the "Muscle Tracker" system. Detailed information about the system can be found on the official website of the manufacturer. In order to conduct sessions in the application, it is necessary to register a user account and purchase Callibri devices.
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.
- Lactate data capture
- Training intensity guidance
- Performance metric insights
- Session history review
- Educational training content
- Simple interface for athletes
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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
Verdict
The clearest difference is update cadence: Athyx at every 2 days against Muscle Tracker Mobile's every 3 months. Muscle Tracker Mobile's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Muscle Tracker Mobile ships an update every 3 months, Athyx every 2 days. The most recent releases landed on October 15, 2026 and October 24, 2026 respectively.
| Parameter | Muscle Tracker Mobile | Athyx |
|---|---|---|
| Price | Free | Free |
| Rating | — | 2.3 (3 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 3 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 59 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | BRAINBIT INC. | Athyx, Inc. |
In-app purchases
Muscle Tracker Mobile
No in-app purchases
Athyx
No in-app purchases









