# Scuba Diving Hand Signals vs Subsurface

The clearest difference is price: Subsurface at Free against Scuba Diving Hand Signals's $2.99. Subsurface also leads on rating (4.5 vs 4.0) and review sentiment (63% vs 50%). Scuba Diving Hand Signals's advantage is chart position (#84 vs unranked) and iOS requirement (15.6 vs 17). On update cadence, ads, in-app purchases and device support there is nothing between them.

Subsurface is free to download; Scuba Diving Hand Signals costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Subsurface holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Subsurface has 48 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 50% of Scuba Diving Hand Signals's written reviews are positive against 63% of Subsurface's.

Scuba Diving Hand Signals ships an update every 5 weeks, Subsurface every 2 months. The most recent releases landed on October 29, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Scuba Diving Hand Signals | Subsurface |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.0 (5 ratings)](https://appshunter.io/ios/app/scuba-diving-hand-signals/id876565142/reviews) | **[4.5 (48 ratings)](https://appshunter.io/ios/app/subsurface-mobile/id1093217161/reviews)** |
| Number of ratings | 5 | **48** |
| Positive reviews | 50.0% of reviews | **63.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Paid | **Free** |
| Best chart rank | **#84** | — |
| Size | 62 MB | 52 MB |
| Requires iOS | **15.6** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lars Behnke](https://appshunter.io/developer/527638156) | [Dirk Hohndel](https://appshunter.io/developer/1093217160) |

## What reviewers say

### Scuba Diving Hand Signals

[App page](https://appshunter.io/ios/app/scuba-diving-hand-signals/id876565142)

**Currently charting:** #84 Top Paid · Sports (US App Store)

Master underwater communication with a comprehensive guide to over 240 scuba diving hand signals. Learn common, emergency, and wildlife signals with illustrations and animal facts. Track your progress and test your knowledge with an integrated quiz.

**Highlights:** 240+ hand signals illustrated, Signals grouped into 8 categories, Underwater wildlife facts, Learning progress tracking, Integrated quiz, Social media sharing

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Scuba Diving Hand Signals free?

Scuba Diving Hand Signals costs $2.99, with no in-app purchases.

### Is Subsurface free?

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

### Which has better reviews, Scuba Diving Hand Signals or Subsurface?

Subsurface is rated higher. Scuba Diving Hand Signals averages 4.0 out of 5 from 5 ratings, while Subsurface averages 4.5 from 48 ratings.

### Do Scuba Diving Hand Signals or Subsurface have ads?

Neither Scuba Diving Hand Signals nor Subsurface shows ads.

### Which is updated more often, Scuba Diving Hand Signals or Subsurface?

Scuba Diving Hand Signals ships an update every 5 weeks, and Subsurface every 2 months. Most recently, Scuba Diving Hand Signals was updated on October 29, 2026 and Subsurface on October 22, 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.*