# Thalos vs Diving Buddy

The clearest difference is iOS requirement: Thalos at 15.1 against Diving Buddy's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Thalos sells 2 in-app purchases, starting at $2.99 per month and Diving Buddy sells 2 in-app purchases, starting at $24.99 per year. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly daily. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Thalos | Diving Buddy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/thalos/id6761337227/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Daily | Daily |
| Monetization | Subscription | — |
| Size | 41 MB | 12 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [JOHN WALLIS YOUNGBLOOD](https://appshunter.io/developer/1888980268) | [Harry Richardson](https://appshunter.io/developer/682912217) |

## What reviewers say

### Thalos

[App page](https://appshunter.io/ios/app/thalos/id6761337227)

This comprehensive dive app offers a robust dive logbook, detailed dive site information with emergency plans, and multiple dive calculators. It includes features for instructors to manage students and courses, and a social feed for divers to connect and share experiences. The app works fully offline, ensuring critical data is always accessible.

**Highlights:** Offline dive logbook, Dive site database with emergency plans, 9 essential dive calculators, Instructor module for course management, Social feed and community features, Emergency mode for critical access

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thalos | $2.99 | per month |
| Thalos | $19.99 | per year |


### Diving Buddy

[App page](https://appshunter.io/ios/app/diving-buddy-dive-log-and-plan/id6767886880)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diving Buddy | $24.99 | per year |
| Diving Buddy | $59.99 | one-time |


## Frequently asked questions

### Is Thalos free?

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

### Is Diving Buddy free?

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

### Do Thalos or Diving Buddy have ads?

Neither Thalos nor Diving Buddy shows ads.

### Which is updated more often, Thalos or Diving Buddy?

Thalos ships an update daily, and Diving Buddy daily. Most recently, Thalos was updated on October 13, 2026 and Diving Buddy 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.*