# freedive STA vs ZenDepth

The clearest difference is in-app purchases: freedive STA at none against ZenDepth's 3. ZenDepth's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

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

freedive STA ships an update every 2 weeks, ZenDepth every 9 days. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | freedive STA | ZenDepth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/zendepth/id6759767091/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | — | Freemium |
| Size | 30 MB | 11 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Stridelab LLC](https://appshunter.io/developer/1794462570) | [Christos Voutsaras](https://appshunter.io/developer/1880557269) |

## What reviewers say

### freedive STA

[App page](https://appshunter.io/ios/app/freedive-sta/id6741502506)

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is freedive STA free?

freedive STA is free to download, with no in-app purchases.

### Is ZenDepth free?

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

### Do freedive STA or ZenDepth have ads?

freedive STA shows ads; ZenDepth does not.

### Which is updated more often, freedive STA or ZenDepth?

freedive STA ships an update every 2 weeks, and ZenDepth every 9 days. Most recently, freedive STA was updated on October 11, 2026 and ZenDepth on October 24, 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.*