Subsurface-mobile is a full-fledged dive log application for iOS, based on Subsurface, the best free open source dive log application available on Windows, Mac and Linux. Subsurface-mobile allows you to access your dive log on your tablet or phone, edit the data and even download new dive information from many Bluetooth LE enabled dive computers. Using a free Subsurface Cloud Storage account you can synchronize your dive data with the Subsurface desktop application (while significantly increasing the usefulness, the cloud account is not required to use Subsurface-mobile).

Please check out the Subsurface-mobile user manual:
Please report any issues you may run into in our user forum:

Subsurface-mobile replaces the Subsurface companion app; you can now track GPS locations from Subsurface-mobile.

Subsurface-mobile is free and open source. No ads, no commercial anything. And it comes with free cloud storage (if you decide to use that - it's optional). Your data aren't used for anything, nothing gets monetized.

What’s New

Version 2.1.6

Fix a bug that prevented downloading from a Shearwater Teric with firmware v11

Ratings and Reviews

3.9 out of 5
10 Ratings
10 Ratings
isilence1 ,

Best dive log ap

This is the best dive log app. Ive tried several including paid apps and was so happy to finally find this one. It does everything I want. Able to Download complete dive profiles off the dive computer, mark dive sites with gps. Lots of cool features. Ap is still in development and takes a little fiddling to get used to but works great for me. Developers are accessible to help with troubles or questions. Recommend to all my dive friends!

TxAdamFitz ,


I came across the desktop version of Subsurface when I was looking for an alternative to the Cressi software. I had all of my dives pulled down from our computers in a snap. Moved my notes over and synced with the cloud. Instantly updating my iPhone with all of my log details. LOVE this app. Can’t believe it’s free!

XxxxxxxMarkxxxxxxxx ,

Great App + Great Support!

I’ve loaded ~ 75 dives from years ago and then started adding dives from my dive computer. I particularly wanted to be able to input my gas usage information as my DC does not have air integration (you can enter your gas usage, and it will calculate your SAC). Also, customer support is awesome!


Dirk Hohndel
30.1 MB

Requires iOS 10.0 or later. Compatible with iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, iPhone XS Max, iPhone XR, iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro, 12.9-inch iPad Pro Wi-Fi + Cellular, 9.7-inch iPad Pro, 9.7-inch iPad Pro Wi-Fi + Cellular, iPad (5th generation), iPad Wi-Fi + Cellular (5th generation), 12.9-inch iPad Pro (2nd generation), 12.9-inch iPad Pro Wi‑Fi + Cellular (2nd generation), 10.5-inch iPad Pro, 10.5-inch iPad Pro Wi‑Fi + Cellular, iPad (6th generation), iPad Wi-Fi + Cellular (6th generation), iPad Pro (11-inch), iPad Pro (11-inch) Wi-Fi + Cellular, iPad Pro (12.9-inch) (3rd generation), iPad Pro (12.9-inch) (3rd generation) Wi-Fi + Cellular, and iPod touch.

Age Rating
Rated 4+
This app may use your location even when it isn't open, which can decrease battery life.
© 2011-2018 Subsurface Development Team


  • Family Sharing

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

You May Also Like