# Subsurface vs DiveSync

The clearest difference is update cadence: DiveSync at every 2 weeks against Subsurface's every 2 months. On price, ads, 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.

Subsurface ships an update every 2 months, DiveSync every 2 weeks. The most recent releases landed on September 27, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Subsurface | DiveSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (48 ratings)](https://appshunter.io/ios/app/subsurface-mobile/id1093217161/reviews)** | — |
| Number of ratings | **48** | — |
| Positive reviews | 63.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 52 MB | 39 MB |
| Requires iOS | 17 | **16.5** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dirk Hohndel](https://appshunter.io/developer/1093217160) | [Proasia Design Co. Ltd](https://appshunter.io/developer/1824363358) |

## What reviewers say

### Subsurface

[App page](https://appshunter.io/ios/app/subsurface-mobile/id1093217161)

This application allows divers to manage their dive logs on their mobile devices. It supports editing dive data and downloading new information from compatible dive computers. Optional cloud synchronization is available for seamless data transfer with desktop versions.

**Highlights:** Mobile dive log management, Edit dive data, Download from Bluetooth LE dive computers, Optional cloud synchronization, Open-source and free

**In-app purchases:** none


### DiveSync

[App page](https://appshunter.io/ios/app/divesync/id6748107764)

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

**In-app purchases:** none


## Frequently asked questions

### Is Subsurface free?

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

### Is DiveSync free?

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

### Do Subsurface or DiveSync have ads?

Neither Subsurface nor DiveSync shows ads.

### Which is updated more often, Subsurface or DiveSync?

Subsurface ships an update every 2 months, and DiveSync every 2 weeks. Most recently, Subsurface was updated on September 27, 2026 and DiveSync on September 20, 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.*