Train.Red APP vs Studio T23
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Train.Red APP
This app monitors muscle oxygen saturation to provide real-time physiological insights for athletes and coaches. It helps optimize performance, track recovery, and analyze training data with actionable metrics.
- Muscle oxygen saturation monitoring
- Real-time physiological insights
- Performance and recovery tracking
- Workout analysis and data export
- Team/organization structure
- Live data overlay
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About this app The official app for the Train.Red muscle oxygen sensors, the new metric for performance. To move, your muscles need energy. The most efficient way to get this energy requires oxygen. We measure the oxygen saturation in your muscles to help you improve. Not every athlete has a team of scientists helping them with their physiological data, we measure data from your muscle and translate this into useable insights, in real-time. - Monitor your physiological power and perform easy exercise tests as an endurance athlete. - Know when your muscle is fully recovered and ready for the next set when doing strength. What’s more? - Cloud functionality to allow workout analysis at home, even when you perform in the gym. - A Team/organisation structure that allows multiple athletes to use the sensors. - Actionable insights after your training or scientific analysis with access to raw data. - Live view with data overlay to match measured fatigue with movement patterns. - Muscle States, Protocols, Dashboard, Training Menu, Muscle Stress Score, and much more. How to start with Train.Red: Create a user profile and connect your sensor. No sensors yet? The Train.Red app requires the Train.Red sensors for full functionality (https://train.red/). Connected your FYER or PLUS? Nice, you are ready to BE AHEAD. What does Train.Red do for me: Whether you’re an athlete, coach, scientist, physio, or anyone involved in sport, Train.Red has something to offer you. Simply because your muscles play a key role in human movement. We track your muscle oxygenation, more specifically, the hemoglobin concentration changes. The Train.Red sensors measure: - SmO2, Muscle Oxygen Saturation (%) - O2Hb, Oxyhemoglobin (mM) - Hhb, Deoxyhemoglobin (mM) - Thb, Total hemoglobin (mM) - HbDiff, the Hemoglobin Difference (mM) If this sounds like Abracadabra, no worries. We display the oxygen saturation in your muscle live and use the other metrics to provide you with actionable insights in real-time. Our AI and advanced analysis options translate this data into 5 different muscle states showing you if your muscle is recovering, or approaching its limits. If this physiological data sounds familiar, perfect. We allow exporting your data to .csv or .fit files for an in-depth analysis of all your data. Every single training session is stored in our cloud and can be analyzed or exported afterward. How do I use Train.Red? The Train.Red sensor is a light-based wearable that you wear directly on your skin. You’re free to place the sensor anywhere on your body but know that this is a hyperlocal metric that will only tell you something about the exact location you place the sensor. We recommend wearing the sensor on a primary involved locomotor muscle, a place on your body that is active during the activity you’re performing. e.g. on your thigh during cycling or squats, the middle part of your upper leg during running, or on your lower arm during climbing. Of course, you are free to use more than one sensor! You can connect up to 4 sensors simultaneously and measure multiple areas at once. You’re not bound to this smartphone application. The Train.Red hardware is integrated into 3rd party apps allowing you to easily synchronise your data from multiple sources. Train.Red sensors can be connected to most Wahoo’s, Garmin’s, Suunto’s and several other devices. More information can be found on our website https://train.red/
Studio T23
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Let op: je hebt een Studio T23-account nodig om in te loggen in deze app. Werk aan je gezondheid en fitness op een manier die bij je past met de Studio T23-app. Of je nu je conditie wilt verbeteren, gewicht wilt verliezen of sterker wilt worden – deze app helpt je om je doelen te behalen en gemotiveerd te blijven. Belangrijkste functie: - Voeding bijhouden: Houd je dagelijkse calorie- en voedingsinname eenvoudig in de gaten. - Trainingsschema’s & workouts: Bekijk je trainingsgeschiedenis, volg persoonlijke schema’s en ontdek kant-en-klare workouts. - Voortgang bijhouden: Volg je gewicht, afmetingen en voortgangsfoto’s om te zien hoe je vooruitgaat. - Coach-chat: Stel vragen en ontvang snel professionele begeleiding van je persoonlijke coach. - Online check-up: Vul je check-up in en krijg direct inzicht in je gezondheid en voortgang. Met de Studio T23-app heb je altijd en overal toegang tot de ondersteuning die je nodig hebt. Begin vandaag nog met een actieve en gezonde levensstijl en ervaar hoe eenvoudig het is om gemotiveerd te blijven. Technische info De app van Studio T23 is ontwikkeld met FITsociety Software (www.fitsociety.io).
Screenshots
Verdict
The clearest difference is update cadence: Studio T23 at every 9 days against Train.Red APP's every 4 weeks. Train.Red APP's advantage is device support (3 vs 1). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Train.Red APP ships an update every 4 weeks, Studio T23 every 9 days. The most recent releases landed on October 3, 2026 and October 17, 2026 respectively.
| Parameter | Train.Red APP | Studio T23 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 100 MB | 100 MB |
| Age rating | 4+ | 4+ |
| Developer | Train.Red B.V. | FITsociety BV (Apps) |
In-app purchases
Train.Red APP
No in-app purchases
Studio T23
No in-app purchases
Questions
Is Train.Red APP free?
Is Studio T23 free?
Do Train.Red APP or Studio T23 have ads?
Which is updated more often, Train.Red APP or Studio T23?
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