StrongerLab vs Train.Red APP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StrongerLab
This app helps weight training enthusiasts track their progress and analyze their workout habits. It allows for custom workout creation, real-time recording with voice input, and detailed statistical analysis through graphs and charts. Data is stored locally on iCloud Drive.
- Custom workout creation
- Real-time exercise recording
- Voice input support
- Exercise pattern analysis
- Graphs and charts for statistics
- No registration required
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Hello, this is Strongerlab. It can be the best partner for those who love weight training. Use the app as a means of measuring yourself with your personal workouts. It will definitely help your training. It helps you to know your current status and exercise habits at a glance. No registration or login required. And it's fast and simple. It faithfully performs the role of an exercise assistant only with the functions provided by downloading the app. This is an early version now. We will continue to add many features. Work out and build your body with StrongerLab!! 1. Create training freely A basic training list is provided, but you can configure your own workout list by freely designating a name and type. You can create any kind of weight training training. For bare body workouts, additional weight can be recorded. 2. Recording function to help you focus on the exercise as much as possible I made it to record comfortably with a spinner-type UI that can be entered with one hand. You can fine-tune the steps of the spinner to suit your style. You can also record compound sets by selecting two exercises. You can record while exercising in real time, and you can freely write an exercise record by designating a specific date. You can check the maximum weight/volume while recording. It supports voice input. 3. Analyze exercise patterns with various data Check the exercise ratio for each part and sport with graphs and charts. Various statistics are provided based on the recorded data. Analyze your training patterns. We will continue to update detailed analysis tools. 4. Light, comfortable and fast There is no need to sign up or log in. You can use the app immediately after downloading it. Your data is safely stored on your icloud drive. - StrongerLab Philosophy Don't train to show off your weight training. You will want to get results quickly and you may not be able to live up to your expectations every time. You need to know how to focus on the exercise itself. Don't think too much in your head. The utopia rises every time, but the body does not develop. Don't judge yourself for changes in your body. When there is a change, the people around you will react first. Train consistently and persistently. You can see yourself changed. Once you start, go to the end.
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/
Screenshots
Verdict
StrongerLab and Train.Red APP are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
On the App Store both sit at effectively the same score — 5.0 for StrongerLab against 5.0 for Train.Red APP. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on June 5, 2026 and July 30, 2026 respectively.
| Parameter | StrongerLab | Train.Red APP |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 17 MB | 101 MB |
| Age rating | 4+ | 4+ |
| Developer | Hyung Gyu Lee | Train.Red B.V. |
Customer experience
StrongerLab
Train.Red APP
In-app purchases
StrongerLab
No in-app purchases
Train.Red APP
No in-app purchases
Questions
Is StrongerLab free?
Is Train.Red APP free?
Which has better reviews, StrongerLab or Train.Red APP?
Do StrongerLab or Train.Red APP have ads?
Which is updated more often, StrongerLab or Train.Red APP?
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