# ATMOS vs DecoPlan

The clearest difference is ads: ATMOS at none against DecoPlan's shown. ATMOS also leads on iOS requirement (15.0 vs 17.0). DecoPlan's advantage is update cadence (every 2 days vs every 6 weeks). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ATMOS ships an update every 6 weeks, DecoPlan every 2 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ATMOS | DecoPlan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (23 ratings)](https://appshunter.io/ios/app/atmos-diving-logbooks/id1448666557/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 7.7% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 2 days** |
| Monetization | Free | — |
| Size | 119 MB | 76 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [ATMOS CO., LTD.](https://appshunter.io/developer/1448666556) | [Dmitri Plotnikov](https://appshunter.io/developer/6805156561) |

## What reviewers say

### ATMOS

[App page](https://appshunter.io/ios/app/atmos-diving-logbooks/id1448666557)

Easily sync and manage your dive logs wirelessly from compatible dive computers. View device information, edit log details, and export your data in UDDF format. Integrates with HealthKit to share dive-related health metrics.

**Highlights:** Wireless dive log syncing, Dive computer information, Edit dive log details, Export logs to UDDF, HealthKit integration

**In-app purchases:** none


### DecoPlan

[App page](https://appshunter.io/ios/app/decoplan/id6814515322)

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

**In-app purchases:** none


## Frequently asked questions

### Is ATMOS free?

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

### Is DecoPlan free?

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

### Do ATMOS or DecoPlan have ads?

DecoPlan shows ads; ATMOS does not.

### Which is updated more often, ATMOS or DecoPlan?

ATMOS ships an update every 6 weeks, and DecoPlan every 2 days. Most recently, ATMOS was updated on November 2, 2026 and DecoPlan on October 31, 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.*