# Subsurface vs SUEX Calypso

The clearest difference is review sentiment: Subsurface at 63% against SUEX Calypso's 0%. SUEX Calypso's advantage is iOS requirement (15.6 vs 17). On price, update cadence, ads and in-app purchases 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, SUEX Calypso every 3 months. The most recent releases landed on October 22, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Subsurface | SUEX Calypso |
| --- | --- | --- |
| 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** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 52 MB | 57 MB |
| Requires iOS | 17 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dirk Hohndel](https://appshunter.io/developer/1093217160) | [SUEX SRL](https://appshunter.io/developer/1478705851) |

## 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


### SUEX Calypso

[App page](https://appshunter.io/ios/app/suex-calypso/id1478705852)

Connect with your diving equipment to access essential data before and after dives. Monitor equipment performance and configure parameters for a more enjoyable underwater experience.

**Highlights:** Connect with diving equipment, Instant access to dive data, Monitor equipment performance, Configure dive parameters, Enhance diving adventures

**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 SUEX Calypso free?

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

### Do Subsurface or SUEX Calypso have ads?

Neither Subsurface nor SUEX Calypso shows ads.

### Which is updated more often, Subsurface or SUEX Calypso?

Subsurface ships an update every 2 months, and SUEX Calypso every 3 months. Most recently, Subsurface was updated on October 22, 2026 and SUEX Calypso on October 25, 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.*