VO2 Master Manager vs MX3 Diagnostics
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VO2 Master Manager
This tool collects and displays performance data including VO2, heart rate, and power. It also monitors speed, cadence, and muscle oxygenation for comprehensive analysis.
- VO2 monitoring
- Heart rate tracking
- Power data collection
- Speed and cadence monitoring
- Muscle oxygenation data
- Performance analysis
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VO2 Master Manager is a data display, collection, and analysis tool. It monitors your performance through VO2, heart rate, and power, speed, cadence, and Moxy muscle oxygenation data collection.
MX3 Diagnostics
Measure and track hydration and sweat sodium levels quickly and conveniently. This system allows athletes, coaches, and managers to manage hydration data for individuals or teams anytime, anywhere. Personalize assessments and manage athlete accounts.
- Perform hydration measurements
- Perform sweat sodium measurements
- View and edit historical data
- Personalize hydration assessment
- Create team/athlete accounts
- Update device firmware
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Say goodbye to time-consuming and inconvenient testing with the MX3 Hydration Testing System. With the MX3 Hydration Testing System athletes, coaches, and team managers can finally measure, track, and manage hydration - anytime, anywhere. With the MX3 Diagnostics app you can: - Perform Hydration Measurements - Perform Sweat Sodium Measurements - View and edit historical measurement data - Personalize hydration assessment with baseline measurements - Create accounts for your team, organization or athletes - Update MX3 LAB firmware
Screenshots
Verdict
The clearest difference is rating: MX3 Diagnostics at 5.0 against VO2 Master Manager's 4.0. MX3 Diagnostics also leads on iOS requirement (10.0 vs 16.0). VO2 Master Manager's advantage is ratings volume (9 vs 2). On price, update cadence, ads and in-app purchases 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.
MX3 Diagnostics holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 9 and 2 respectively.
VO2 Master Manager ships an update every 5 weeks, MX3 Diagnostics monthly. The most recent releases landed on September 9, 2026 and September 15, 2026 respectively.
| Parameter | VO2 Master Manager | MX3 Diagnostics |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (9 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 9 — better | 2 |
| Update frequency | Every 5 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 87 MB | 124 MB |
| Age rating | 4+ | 4+ |
| Developer | VO2 MASTER HEALTH SENSORS INC | MX3 DIAGNOSTICS |
Customer experience
VO2 Master Manager
MX3 Diagnostics
In-app purchases
VO2 Master Manager
No in-app purchases
MX3 Diagnostics
No in-app purchases
Questions
Is VO2 Master Manager free?
Is MX3 Diagnostics free?
Which has better reviews, VO2 Master Manager or MX3 Diagnostics?
Do VO2 Master Manager or MX3 Diagnostics have ads?
Which is updated more often, VO2 Master Manager or MX3 Diagnostics?
Other comparisons
