ZenDepth vs Static
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZenDepth
Enhance your breath-holding capabilities with personalized training plans and guided exercises. Track progress, unlock techniques, and compete with friends in a visually immersive underwater environment.
- Adaptive training plans (CO2 & O2 tables)
- Guided stretching exercises
- 20+ breath-hold techniques
- Gamified milestones and badges
- Social leaderboards for friends
- Immersive underwater aesthetic
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Master your breath. Extend your limits. ZenDepth is a personalized apnea training app built for freedivers, spearfishers, surfers, and meditators who want to go further underwater. Set your baseline. Get a 12-session adaptive plan calibrated to your personal best. Track your progress through phases as your hold times grow. SMART TRAINING PLANS CO2 tables build your tolerance to high carbon dioxide. O2 tables train your body to use oxygen more efficiently. Every plan adapts to your current level and improves with you. GUIDED STRETCHING Expand your lung capacity and thoracic mobility with five science-backed stretching exercises — guided in real time with live cues. UNLOCK TECHNIQUES Master 20 breath-hold techniques progressively as you train — from Recovery Breathing to advanced Breath Packing. GAMIFIED MILESTONES Earn badges, conquer phases, and watch your guided streak grow. Training feels like progress, not a grind. TRAIN WITH FRIENDS Add friends by username and see how your personal bests stack up. A private leaderboard built for the freediving community. BEAUTIFUL BY DESIGN An underwater aesthetic that makes every session feel like a dive. Animated backgrounds, glass-morphic UI, and haptic feedback designed for focus and flow. ZenDepth is free to start. Unlock all training phases with a premium subscription after completing the first training phase. Terms of Use: https://zendepth.app/terms.html
Static
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Build a steady dry breath-hold routine with guided CO2/O2 tables, a 6-week plan, calm cues, reminders, and progress that favors controlled practice over record chasing. Static is a dry breath-hold training app for people who want structured apnea-style table practice without turning every session into a max attempt. Use it at home, seated or lying down, to follow planned Prepare, Hold, and Recover rounds with voice, sound, haptic, and countdown cues. WHO IT IS FOR - Breath-hold trainees - Swimmers, surfers, spearfishers, and underwater-sport athletes - Freedivers - Careful beginners learning CO2 and O2 tables - Anyone building a consistent dry practice routine TRAIN WITH STRUCTURE - Follow a 6-week beginner plan with three sessions per week - Start with a clear Today session instead of guessing what to do next - Preview every round before the timer begins - Practice CO2 tables with steady holds and shorter recoveries - Practice O2 tables with generous recovery and gradual hold extensions - Use a comfortable-hold practice session without a max test STAY IN CONTROL - Prepare, Hold, and Recover phases are easy to read at a glance - Stop and Pause stay reachable during active sessions - Interrupted sessions are handled explicitly - Effort check-ins help you save sessions honestly - Learn cards reinforce dry-only practice, recovery breathing, and stop signs CUES THAT WORK WHEN YOU ARE NOT STARING AT THE SCREEN - Voice cues for phase changes - Soft tones and haptics - Countdown cues before transitions - Quiet ambient audio - Local training-day reminders TRACK YOUR TRAINING - Save session results locally - Review recent sessions and progress - Adjust your comfortable hold - Export your own history - Core training works offline STATIC PRO Unlock Weeks 3-6, full CO2 and O2 libraries, advanced progress ranges and charts, full in-app history, unlimited custom tables. Static Pro is available as auto-renewable Monthly and Annual subscriptions, plus a Lifetime one-time purchase where available. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Your Apple Account will be charged for renewal within 24 hours before the end of the current period. You can manage or cancel subscriptions in your Apple Account settings after purchase. Prices and availability may vary by country and are confirmed before purchase. IMPORTANT SAFETY NOTES Static is for dry practice only. Never use this app in water, while driving, or anywhere fainting could cause harm. Do not hyperventilate. Stop if you feel dizzy, confused, numb, unusually warm, in pain, anxious, or not right. Static is not a medical device and does not diagnose, treat, monitor, or prevent any medical condition. It is not for sleep-apnea treatment, emergency safety, blackout prediction, or supervised in-water training. LINKS AND SUPPORT App Website: https://staticapneatrainer.com/ Privacy Policy: https://staticapneatrainer.com/privacy-policy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Developer Website: https://edgars-dev.com/ For support, please contact: info@staticapneatrainer.com
Screenshots
Verdict
The clearest difference is update cadence: ZenDepth at every 9 days against Static's every 3 weeks. On price, ads, in-app purchases and device support 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. ZenDepth sells 3 in-app purchases, starting at $3.99 per month and Static sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
ZenDepth ships an update every 9 days, Static every 3 weeks. The most recent releases landed on November 5, 2026 and October 28, 2026 respectively.
| Parameter | ZenDepth | Static |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 9 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 18.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 11 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Christos Voutsaras | EDGARS JAUDZEMS |
In-app purchases
ZenDepth
- Monthly$3.991 Month
- Annually$19.991 Year
- Lifetime$49.99
Static
- Monthly$2.991 Month
- Annual$12.991 Year
- Lifetime$44.99








