# ATMOS vs ダイバーLOG

ATMOS and ダイバーLOG are too close to call on the numbers: across 8 compared parameters — price, review sentiment, update cadence and ads among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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, ダイバーLOG every 2 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | ATMOS | ダイバーLOG |
| --- | --- | --- |
| 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 | **8.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 119 MB | 39 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ATMOS CO., LTD.](https://appshunter.io/developer/1448666556) | [HEAD JAPAN K.K.](https://appshunter.io/developer/1497065750) |

## 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


### ダイバーLOG

[App page](https://appshunter.io/ios/app/log/id1451483867)

Easily transfer and view your dive logs from Calm Plus +. Keep a digital record of your underwater adventures and access them anytime.

**Highlights:** Transfer dive logs, View dive logs, Calm Plus + integration, Digital logbook, Sports tracking

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ATMOS free?

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

### Is ダイバーLOG free?

ダイバーLOG is free to download, with no in-app purchases.

### Do ATMOS or ダイバーLOG have ads?

Neither ATMOS nor ダイバーLOG shows ads.

### Which is updated more often, ATMOS or ダイバーLOG?

ATMOS ships an update every 6 weeks, and ダイバーLOG every 2 months. Most recently, ATMOS was updated on November 2, 2026 and ダイバーLOG on November 2, 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.*