iPhone Screenshots


More than 180 international scuba hand signs for underwater communication. For divers and those who start scuba diving!

Improve your communication during scubadiving!

This app has actually three modules:

General hand signals
- Instructions and references
- Problems
- Danger signals
- Questions
- Numbers and units
- Nightdive

Hand signals for marine life
- Sharks and rays
- Reptiles and mammals
- Fishes
- Lower animals
- Freshwater fishes

Funny hand signals

The app displays a photo of the marine animal with every hand sign. You and your dive-buddy will always be speaking about the same thing!

We acknowledge that not every existing hand signal has been included in this app. Through the active imagination of the diving community, new signals are constantly coming up. We would like to offer you this first edition as a glimpse into the diversity of underwater communication.

No internet access required, important for use during your vacation!

However, should you find any hand signals have been left out or not included, feel free to enter your suggestions in our ok2dive-Blog www.ok2dive.de/blog at "Mitmachen" or "Join in" or mail your suggestion to takepart@ok2dive.de.

Find "your" dive signal included in upcoming editions. Help to develop and grow the divers language!

For those not owning an iPhone or iPod touch the english printed version of the Dive Signal booklet is coming soon (right now available in german).

Find the frequently used scuba hand signs in this app. Ideal for traveling!

What’s New

Version 3.0

The App has been completely reprogrammed and is now available as a 64 bit version.
The naviagtion has been simplified.
All images have been adapted for higher resolution displays.

Ratings and Reviews

3.7 out of 5
3 Ratings

3 Ratings

reefcomber ,

Nice app

Saw some old ones, learned some new ones, even new ways to communicate old things. Better than Scuba Signals app, because this one has signals for fish. Hope to see this one continue to be updated

dubosemj ,

Where are the pictures?

The selling point for me was pictures of the marine life with each sign, but I can't figure out where to find them if they're even on there.

Korvettes ,

Good app

I just got certified so I only learned the basics. This provides a lot more signals.


ok2dive UG (haftungsbeschraenkt)
212.8 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, German

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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