# Subsurface vs Blue Infinity Dive Watch

The clearest difference is review sentiment: Blue Infinity Dive Watch at 100% against Subsurface's 63%. Blue Infinity Dive Watch also leads on update cadence (monthly vs every 2 months). Subsurface's advantage is in-app purchases (none vs 2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Blue Infinity Dive Watch sells 2 in-app purchases, starting at $5.99 per month. Subsurface asks for nothing beyond the download.

Subsurface ships an update every 2 months, Blue Infinity Dive Watch monthly. The most recent releases landed on September 18, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | Subsurface | Blue Infinity Dive Watch |
| --- | --- | --- |
| 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 | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 52 MB | 186 MB |
| Requires iOS | 17 | 17.0 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Dirk Hohndel](https://appshunter.io/developer/1093217160) | [James Mansfield](https://appshunter.io/developer/1126367894) |

## 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


### Blue Infinity Dive Watch

[App page](https://appshunter.io/ios/app/blue-infinity-dive-watch/id6738265239)

Track your snorkeling, freediving, and spearfishing sessions with real-time depth, duration, and heart rate data. Review your dive history, routes, and detailed metrics on a companion app.

**Highlights:** Real-time depth and duration, Heart rate and water temperature, Location tracking, Dive session history, Dive route on map, Depth over time chart

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $5.99 | per month |
| Annual | $29.99 | per year |


## Frequently asked questions

### Is Subsurface free?

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

### Is Blue Infinity Dive Watch free?

Blue Infinity Dive Watch is free to download, with in-app purchases available.

### Do Subsurface or Blue Infinity Dive Watch have ads?

Neither Subsurface nor Blue Infinity Dive Watch shows ads.

### Which is updated more often, Subsurface or Blue Infinity Dive Watch?

Subsurface ships an update every 2 months, and Blue Infinity Dive Watch monthly. Most recently, Subsurface was updated on September 18, 2026 and Blue Infinity Dive Watch on September 6, 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.*