Comparison

Freediving Apnea Trainer vs Train.Red APP

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

Head to head
About

Freediving Apnea Trainer

This app helps improve breath-holding capabilities for freediving, underwater hunting, and yoga. It calculates personalized training tables based on your maximum breath-hold time and offers various exercises to enhance stamina and control. Track your progress with statistics and charts, and utilize customizable timers with voice and vibration notifications.

Highlights
  • Personalized training table calculation
  • Customizable square breath timer
  • Progress tracking with statistics
  • Bluetooth heart rate monitoring integration
  • AIDA time notifications
  • Contraction marking
  • Voice and vibration alerts
Features
Read full description

To soar enough to dive under the water. Prolong your flight. Freediving apnea timer for beginning and advanced freedivers, underwater hunters, yoga training! Make your apnea stamina better. One of many uses: First, determine the maximum breath holding time for this moment, the application automatically calculated tables based on this best time. Then using training plan do the tables and other exercises from apnea trainer (see detailed how-to guide in app) Capabilities and features: - Edit existing tables and create your own - The history of completed trainings with statistics and charts - Supporting bluetooth devices for heart rate measurements (Mi Band 3,4,5,6, Polar H10, H9, H8) - Improve and save you progress in "Best time" - Calculate tables based on best time - AIDA time notifications during prepare and table breath phase - Flexible "Square breath" training timer for preparing and relaxation - Voice and vibration notification of the remaining time - Ability to mark the start of contractions - Pause, early transition to the next phase, +10 seconds ability Improve stamina breath with us! We are open to get assist in translating the application into your native language :) This application is integrated with the HEALTH application. For recording and reading indicators such as Heart Rate and oxygen Saturation. Disclaimer: Breath holding may have some risks. We recommend seeking medical doctor's advise regarding breath holding before using this app.

About

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.

Highlights
  • Muscle oxygen saturation monitoring
  • Real-time physiological insights
  • Performance and recovery tracking
  • Workout analysis and data export
  • Team/organization structure
  • Live data overlay
Read full description

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

Freediving Apnea Trainer4 screens
Train.Red APP4 screens

Verdict

The call

The clearest difference is in-app purchases: Train.Red APP at none against Freediving Apnea Trainer's 1. Train.Red APP also leads on ads (none vs shown) and rating (5.0 vs 4.7). Freediving Apnea Trainer's advantage is ratings volume (283 vs 1) and device support (5 vs 3). On price 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. Freediving Apnea Trainer sells 1 one-off in-app purchase. Train.Red APP asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Train.Red APP holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Freediving Apnea Trainer has 283 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Freediving Apnea Trainer ships an update every 2 months, Train.Red APP every 3 weeks. The most recent releases landed on October 29, 2026 and October 20, 2026 respectively.

Scorecard8 real differences · 2 level
Freediving Apnea Trainer versus Train.Red APP: the parameters behind the verdict, then further details
ParameterFreediving Apnea TrainerTrain.Red APP
PriceFreeFree
Rating4.7 (283 ratings)5.0 (1 ratings) — better
Positive reviews75.3% of reviews—
Number of ratings283 — better1
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod, Mac, Apple Watch — betteriPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size146 MB70 MB
Age rating4+4+
DeveloperMaksim PipkinTrain.Red B.V.

Customer experience

Freediving Apnea Trainer

All ratings277 ratings
Positive91.0%
Neutral5.1%
Negative4.0%
Written reviews85 reviews
Positive75.3%
Neutral9.4%
Negative15.3%

Train.Red APP

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Freediving Apnea Trainer

One-time1
  • Unlock Premium Version$12.99
None

Train.Red APP

No in-app purchases

Questions

Is Freediving Apnea Trainer free?
Freediving Apnea Trainer is free to download, with in-app purchases available.
Is Train.Red APP free?
Train.Red APP is free to download, with no in-app purchases.
Which has better reviews, Freediving Apnea Trainer or Train.Red APP?
Train.Red APP is rated higher. Freediving Apnea Trainer averages 4.7 out of 5 from 283 ratings, while Train.Red APP averages 5.0 from 1 ratings.
Do Freediving Apnea Trainer or Train.Red APP have ads?
Freediving Apnea Trainer shows ads; Train.Red APP does not.
Which is updated more often, Freediving Apnea Trainer or Train.Red APP?
Freediving Apnea Trainer ships an update every 2 months, and Train.Red APP every 3 weeks. Most recently, Freediving Apnea Trainer was updated on October 29, 2026 and Train.Red APP on October 20, 2026.

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