STAmina is created by freedivers with the ultimate purpose to improve your apnea skills by increasing the breath-holding time and developing the CO2 tolerance. STAmina is all about O2 deprivation and CO2 tolerance tables. It allows you to configure tables to correspond to your skill level. It leads you through a workout with visual and voice notifications and tracks the history of your workouts.

- Apple Health synchronisation
Track completed exercises as Mindful Minutes in Apple Health

- Tables Generator
Automatically create exercises that match your level

- Male/Female voice guidance
Voice is recorded by professional voice actors

- Training reminders
Set your schedule and never miss a workout

- Unlimited workout log
Track your progress with unlimited log entries

- Personal best tracking and history
Special timer to test your best result

Kinds of exercises:
CO2 tolerance tables
O2 deprivation tables
Mix tables
Wonka tables
Custom tables
Pranayama exercise

What’s New

Version 4.8.2

This release includes general bug fixes and performance improvements. Thank you for using STAmina!

Ratings and Reviews

4.9 out of 5
2.9K Ratings

2.9K Ratings

Coach Adam Cobb ,

Post Covid19

I’m extremely grateful for this tool at this moment in time. After getting COVID19 6 weeks ago and suffering from major fatigue for 14 days while being an athlete and coaching NBA athletes to be their best in mind and body I was struggling with my lack of stamina as I’m known to be the guy in the room that never gets tired. After a few friends of mine getting Covid19 and developing pneumonia because they pushed it during their training after being symptom free, I knew I had to slow down and modify what’s possible right now.
Your app has given me great hope that I can still challenge myself right now to build my energy and stamina but not do any potential damage. Not only that, but as a scuba diver and lover of the ocean now I’m thinking and visualizing my first free dive and even first spear fishing trip with my friend that recommended this app to me. Grateful for the gift you’ve given me through your app, the gift of energy, stamina, and vision. Cheers with water, Coach Adam Cobb

dootph ,

Great app!

UPDATE: The developer contacted me in a very timely manner and helped me resolve the issue. Which was that the ringer on the left side of the phone was in the silent position. Now I have the voice and will update the rating to 5 stars as I find the app very useful. I would love to see an upgrade at some point that will allow to hear the app’s voice even with the ringer in silent position though, as I don’t want to be interrupted by any phone calls during my training! Thanks for taking this request into account.

Original review: 3 stars - the app appears to be completely silent, although I set a voice and beeping in Settings. It is difficult to watch the time during all the training and I want to make sure I have the voice activated. I already rebooted my phone and did everything I could to ensure it’s working, but no success. And I can’t find how to contact developer with this questions. Thanks for looking into it.

Developer Response ,

Thanks for the review! In the latest version (1.9.8) the app's voice should work even with the ringer in silent position.

Sibicle ,

Solid for what it does

2020 update

Use this app consistently. Developer is really responsive which I appreciate. Got me to 4 minute hoods, thanks!!

Takes out the guesswork from creating tables, and lets you focus on technique instead of watching a timer. There are, however, a few features that I think would be pretty obvious inclusions in a paid (premium) app.

Would be nice if it helped you decide when to generate new tables, and allowed you to rate and makes notes about each session (how difficult did you find it, did you master a technique, etc). A history graph would be nice too, along with an export functionality.

Also it’s weird that it doesn’t work with the silent switch on and the display off. For instance, my metronome app plays sound regardless of the state of the silent switch or display. Seems like this would be the obvious thing to do, as when you start a session, you are indicating that you want that activity happening for the next ~20 minutes—the app could infer that it’s okay if it makes noise.

Finally I dive to get away from the noise of society and go to a place of focus and mindfulness—being nagged every time to “SHOW THE WOLE WORLD” my dive practice is antithetical to the way I experiencing diving. Please let me switch this feature off!

Developer Response ,

Hey, thanks for the review. That's a super valuable input for me. Currently, I'm working on some big changes, but as soon as they're done, I'll add a possibility to rate a session and add a note. I'll also make it possible to disable the sharing feature. Can you please contact me by email (About -> Contact) and I'll give you more info about why the app doesn't work when the screen is switched off. And I would like to hear more about your training routine, I think I can learn a lot about the UX cases from you.

App Privacy

The developer, Squarecrowd Apps, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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