Comparison

STAmina Apnea Trainer vs SSI App

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

Head to head
About

STAmina Apnea Trainer

This app helps users improve their breath-holding capabilities for activities like freediving, spearfishing, and other water sports. It offers various training tables and personalized programs to enhance physical and mental endurance underwater.

Highlights
  • 6 Apnea table options (O2 deprivation, CO2 tolerance, Wonka, Mix, Custom, Pranayama)
  • Personalized training programs with 3 difficulty levels
  • Customizable exercise settings
  • Training reminders
  • Detailed statistics and training history
  • Voice guidance
  • Heart rate and oxygen saturation tracking (requires compatible monitor)
Features
Read full description

BY FREEDIVERS, FOR FREEDIVERS TO STAY UNDERWATER FOR LONGER. ► Helps with physical and mental aspects of improving the ability to hold your breath ► Over 50k+ users Hold your breath longer underwater with the best freediving apnea trainer – STAmina Apnea Trainer. By freedivers, for freedivers, our freedive apnea trainer helps you with static apnea tables and lung capacity training so you can effectively increase the time when diving underwater. See why STAmina Apnea Trainer is one of the best apnea apps to improve the breath-holding time for freediving, scuba diving and spearfishing, as well as surfing, running, and other water sports with 6 different apnea tables types. ■ FREEDIVING & SPEARFISHING APNEA TRAINER FEATURES: ◉ 6 APNEA TABLE OPTIONS STAmina Apnea Trainer can create / generate custom apnea (exercises that are automatically created based on the maximum breath-hold and match the user’s level) or let you select from the following customizable table types: - O2 deprivation table – accustoms a body to lower oxygen levels. This is achieved by increasing the amount of time that you hold your breath on each attempt, while the resting time is fixed. - CO2 Tolerance table – helps a body to adapt to high carbon dioxide levels. This is achieved by decreasing the length of resting time between fixed breath-hold periods. - Wonka table – a variation of CO2 tables. Apnea timer starts after the first contraction, the rest time takes one breath. - Mix table – tables where apnea time increases and rest time decreases with each round. - Custom table – allows mixing of different approaches to create a custom training, thus generating the most effective training program. - Pranayama – a breathing technique to decrease stress in the body and relax the nervous system. ◉ APPLE HEALTH SYNCRONIZATION ◉ PERSONALIZED TRAINING WITH VARYING DIFFICULTY When you start working with the application, you set your personal record in breath holding. Based on this data, the app will offer a personalized training program with exercises of 3 difficulty levels to choose from: easy, normal, and hard. ◉ PERSONALIZED EXERCISE SETTINGS Each exercise can be edited by setting your own number of repetitions, breath hold time, rest time, etc. ◉ TRAINING REMINDERS Get the notification to start your apnea training. Set a reminder in the apnea diver app for the day and the time & get a notification to do a breath holding training session. ◉ PERSONAL STATISTICS AND DETAILED TRAINING HISTORY All your workouts and exercises are recorded in the freedive trainer app to track the detailed progress of each training. ◉ VOICE GUIDANCE Training may be accompanied by voice guidance with male/female voices recorded by professional voice actors. STAmina supports English, French, Russian voice guidance. ◉ HEART RATE AND OXYGEN SATURATION TRACKING Track your heart rate while doing breath holding exercises (a compatible HR monitor or pulse-oximeter is required) ◉ CONTRACTIONS TRACKING Use our freedive trainer to track unlimited contractions, analyse captured data after exercises ◉ CLOUD SYNC / BACKUP Access your data on multiple devices and easily restore it in case you switch devices/phones. ----- Stamina Apnea Trainer allows training breath hold effectively for anyone who cares about all kinds of diving including: > beginner or professional freedivers; spearfishers; > scuba divers to learn how to dive longer on one tank; > surfers in case of unexpected breath hold; > underwater sports athletes such as underwater rugby, hockey, etc. > runners who want to train breath holding & high tolerance to CO2 while running _______ Web: https://getstamina.app/ Terms of Use: https://getstamina.app/terms_of_use_app.html Privacy Policy: https://getstamina.app/privacy_policy_app.html Support: support@squarecrowdapps.com

About

SSI App

Access digital training materials, certifications, and a digital logbook for various diving disciplines. Track dive progress, manage gear, and earn ratings. Connect with dive centers and stay updated on industry news and events.

Highlights
  • Digital training materials
  • Digital certifications
  • Digital logbook
  • Dive gear management
  • Achievements and awards
  • Dive statistics sharing
  • SSI network connection
Features
Read full description

DIGITAL DIVE LOG Fast dive logging for scuba, freediving, extended range & rebreather dives. Sync from Mares, Suunto, Shearwater, Aqualung & more. GPS tagging, QR codes & Dive Site Database included. TRAINING & FREE COURSES 24/7 access to SSI learning materials in 30+ languages. Free programs: Try Scuba, Snorkeling, Try Freediving & Scuba Diver. Track progress and earn ratings – Specialty Diver, Advanced Specialty Diver & Master Diver. DIGITAL CERTIFICATIONS All your dive certs, accident & travel insurance in one place. Powered by DiveAssure. AI ASSISTANT & DIVE WIZARD Log dives by voice, find features instantly with AI, or use the Dive Wizard for quick minimum-data entry. GEAR MANAGER Track serial numbers, service dates & equipment photos for all your dive gear. SSI NETWORK & EVENTS Connect with dive centers worldwide, watch 360° skills videos, and discover dive events & travel via SCUBAGO. Whether you're a beginner looking to learn to scuba dive, a freediver tracking breath-hold sessions, or a technical diver managing multiple gas mixes – MySSI is your complete underwater companion. Insurance currently available via DiveAssure. Supported dive computers: Mares Sirius, Sirius L, Sirius Hunter, Horizon, Genius, Puck 4, Puck Pro EZ, Puck Pro Plus, Puck Pro, Puck Air 2, Quad CI, Quad 2, Quad Air, Quad, Smart, Smart Apnea, Smart Air; Scubapro via LogTrack App. Full list available in-app under "Supported Dive Computers."

Screenshots

STAmina Apnea Trainer4 screens
SSI App4 screens

Verdict

The call

The clearest difference is in-app purchases: SSI App at none against STAmina Apnea Trainer's 2. STAmina Apnea Trainer's advantage is update cadence (every 5 days vs every 3 weeks). On price, rating, review sentiment and ratings volume 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. STAmina Apnea Trainer sells 2 in-app purchases, starting at $4.99 per month. SSI App asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for STAmina Apnea Trainer against 4.8 for SSI App. Both are backed by a comparable volume of ratings — 5.4K and 8.3K respectively. Written reviews are what separate them: 88% of STAmina Apnea Trainer's written reviews are positive against 84% of SSI App's.

UpkeepUpdate frequency

STAmina Apnea Trainer ships an update every 5 days, SSI App every 3 weeks. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

Scorecard2 real differences · 8 level
STAmina Apnea Trainer versus SSI App: the parameters behind the verdict, then further details
ParameterSTAmina Apnea TrainerSSI App
PriceFreeFree
Rating4.9 (5.4K ratings) — better4.8 (8.3K ratings)
Positive reviews88.5% of reviews — better83.7% of reviews
Number of ratings5.4K8.3K — better
Update frequencyEvery 5 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size65 MB189 MB
Age rating4+4+
DeveloperSquarecrowd Apps, LLCHEAD Watersports GmbH

Customer experience

STAmina Apnea Trainer

All ratings5,438 ratings
Positive99.3%
Neutral0.5%
Negative0.2%
Written reviews355 reviews
Positive88.5%
Neutral5.4%
Negative6.2%

SSI App

All ratings8,304 ratings
Positive97.2%
Neutral1.9%
Negative0.9%
Written reviews898 reviews
Positive83.7%
Neutral4.9%
Negative11.4%

User reviews

STAmina Apnea Trainer

From 5.4K App Store ratings

What we love

  • 🚀 Easy to use
  • 👍 Helps improve breath hold
  • 🚀 Customizable tables
  • 👍 Tracks progress
  • 👍 Integrates with devices

Room to improve

  • 🐛 Glitchy UI when switching devices
  • 🐛 Unreliable Apple Watch sync
  • 🐛 Buggy watch app
  • 🐛 Laggy sync between watch and phone
  • 🐛 Haptic feedback issues

SSI App

From 8.3K App Store ratings

What we love

  • 🚀 Easy to use
  • 🚀 Convenient for logging dives
  • 🚀 Helpful for training and learning
  • 🚀 Comprehensive features
  • 🚀 Intuitive navigation

Room to improve

  • 🐛 Buggy or glitchy
  • 🐛 Difficulty adding dive sites
  • 🐛 Inconsistent metric/imperial settings
  • 🐛 Trouble syncing dive data
  • 🐛 Crashes or freezes

Bugs and requests

STAmina Apnea Trainer

Reported bugs

5 issues
  • Apple Watch app doesn't synchronize reliably
  • Watch app missing features of phone app
  • Random beeps and haptics not selected in settings
  • App crashes when run from synced phone
  • HRV not recorded in Apple Health

Requested features

8 requests
  • Recommended training regimens based on goals
  • Voice announcements of passing time
  • Ability to pause/resume rest intervals
  • Apple Watch app with same functionality as phone app
  • Integration with more pulse oximeters
Show 3 more
  • Ability to edit personal records
  • Progress tracking graphs
  • More guided tutorials and onboarding

SSI App

Reported bugs

6 issues
  • Dive data deletion or loss
  • Inability to log certain dives
  • Incorrect depth/time data display
  • Courses/videos failing to load
  • Profile picture not updating
Show 1 more
  • Black screen or app not opening

Requested features

6 requests
  • Add ability to upload photos to dive logs
  • Integrate with more dive computers beyond Mares
  • Improve buddy system and dive sharing functionality
  • Add offline mode or caching for course materials
  • Enhance map and dive site search capabilities
Show 1 more
  • Implement Wallet/Apple Pay integration for digital certification cards

In-app purchases

2 purchases

STAmina Apnea Trainer

Subscriptions2
  • STAmina Pro (1 Month)$4.991 Month
  • STAmina Pro (1 Year)7 Days trial$29.991 Year
None

SSI App

No in-app purchases

Questions

Is STAmina Apnea Trainer free?
STAmina Apnea Trainer is free to download, with in-app purchases available.
Is SSI App free?
SSI App is free to download, with no in-app purchases.
Which has better reviews, STAmina Apnea Trainer or SSI App?
STAmina Apnea Trainer is rated higher. STAmina Apnea Trainer averages 4.9 out of 5 from 5.4K ratings, while SSI App averages 4.8 from 8.3K ratings.
Do STAmina Apnea Trainer or SSI App have ads?
Neither STAmina Apnea Trainer nor SSI App shows ads.
Which is updated more often, STAmina Apnea Trainer or SSI App?
STAmina Apnea Trainer ships an update every 5 days, and SSI App every 3 weeks. Most recently, STAmina Apnea Trainer was updated on September 22, 2026 and SSI App on September 23, 2026.

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