# ZenDepth vs inDepth Apnea

The clearest difference is in-app purchases: inDepth Apnea at none against ZenDepth's 3. inDepth Apnea also leads on iOS requirement (15.0 vs 18.0). ZenDepth's advantage is update cadence (daily vs every 6 days) and ratings volume (4 vs 1). On price, rating, ads and device support there is nothing between them.

Both are free to download. ZenDepth sells 3 in-app purchases, starting at $3.99 per month. inDepth Apnea asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for ZenDepth against 5.0 for inDepth Apnea. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

ZenDepth ships an update daily, inDepth Apnea every 6 days. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | ZenDepth | inDepth Apnea |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/zendepth/id6759767091/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/indepth-apnea/id6796742901/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Daily** | Every 6 days |
| Monetization | Freemium | **Free** |
| Size | 10 MB | 45 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Christos Voutsaras](https://appshunter.io/developer/1880557269) | [Mariusz Kociubinski](https://appshunter.io/developer/1568496751) |

## What reviewers say

### ZenDepth

[App page](https://appshunter.io/ios/app/zendepth/id6759767091)

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.

**Highlights:** Adaptive training plans (CO2 & O2 tables), Guided stretching exercises, 20+ breath-hold techniques, Gamified milestones and badges, Social leaderboards for friends, Immersive underwater aesthetic

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Annually | $19.99 | per year |
| Lifetime | $49.99 | one-time |


### inDepth Apnea

[App page](https://appshunter.io/ios/app/indepth-apnea/id6796742901)

This app is a breath-hold trainer designed for freedivers and spearfishermen. It offers various training tables and exercises that adapt to your personal best, with voice and haptic cues to guide you through each session. Track your progress, analyze your performance, and plan your training week effectively.

**Highlights:** Adaptive CO2 and O2 tables, Static holds and apnea walks, Voice and haptic cues, Personalized training plans, Session logbook with trends, CSV export and backup

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ZenDepth free?

ZenDepth is free to download, with in-app purchases available.

### Is inDepth Apnea free?

inDepth Apnea is free to download, with no in-app purchases.

### Which has better reviews, ZenDepth or inDepth Apnea?

ZenDepth and inDepth Apnea are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do ZenDepth or inDepth Apnea have ads?

Neither ZenDepth nor inDepth Apnea shows ads.

### Which is updated more often, ZenDepth or inDepth Apnea?

ZenDepth ships an update daily, and inDepth Apnea every 6 days. Most recently, ZenDepth was updated on October 7, 2026 and inDepth Apnea on October 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*