Deep Tools4.71 - App Store

The Complete Dive Toolkit

Deep Tools is a must-have application for recreational, advanced, and technical divers.

Whether you are learning to dive, planning complex decompression dives, or logging your underwater adventures, Deep Tools provides reliable tools you can trust. Import dives directly from your Shearwater dive computer, plan dives using the advanced Deco Planner, or use the app as a practical learning aid during your dive training.
Tools included:

- Maximum Operating Depth (MOD)
- Oxygen Partial Pressure (ppO₂)
- Equivalent Air Depth (EAD)
- Equivalent Narcotic Depth (END)
- Equivalent Air Density Depth (EADD)
- No Decompression Limit (NDL)
- Best Trimix for depth
- Best Nitrox for depth
- Gas consumption and density
- Calculator for lifting bag
Dive Log: *
- Import dives from Shearwater dive computers (Petrel, Perdix, NERD, Teric, etc.)
- Log dive sites with name, coordinates, and custom tags
- Automatically merge dives with short surface intervals
- Share logged dives with your buddies
- Create local backups or migrate data to another device
Advanced Dive Planner: *

Plan complex dives with confidence, whether on Open Circuit (OC) or Rebreather (CCR):
- Repetitive dive planning
- Bühlmann ZH-L16B and ZH-L16C with Gradient Factors
- Gas consumption, CNS, and OTU calculations
- Visual dive profile, text plan, pressure graph, and slate view
- Lost gas planning
- CCR Bailout planning
- Multiple point dive plan with custom bailout points
- Share dive plans with friends
Gas Blender: *

Prepare accurate breathing gas mixtures:
- Trimix and Nitrox blending
- Mix to desired gas
- Mix with Top-off gas
- Continuous flow blending
Additional Features
- Metric and Imperial units
- Adjustable altitude and water type (EN13319, salt, fresh)
- Set your altitude
- Custom tank / cylinder database
* Advanced features are available with a subscription or during the free trial.
Special thanks to V. Paul Gordon, Serge Nelissen and Michael Heus for extensive testing and valuable contributions!
Terms of Service:
http://www.deepblue.si/privacy/terms-of-service.php

Version History Gas consumption fixed. 4.71 Aug 6 Minor bug-fixes. 4.70 Aug 3 Added support for importing UDDF and Subsurface (SSRF) dive logs. 4.60 Feb 13 This update fixes an issue with the Next button in Blender, corrects the tank toggle in Planner, and introduces improved Z-factor calculations for more accurate gas results. 4.52 Feb 10 We’ve squashed some bugs and improved performance to keep the app running smoothly for you. 4.51 Feb 2 We’ve added new features, improved existing tools, and fixed numerous bugs to make Deep Tools better than ever.

Thanks for using Deep Tools! 4.50 Jan 26 Bug fixes and performance improvements. 4.20 09/15/2025 Minor bug-fixes. 4.10 07/29/2025 Tanks in the planner are now independent of your Tank Library.
You can add a new tank or select one from your existing Tank Library directly within your plan.
Planned tanks are no longer automatically added to your Tank Library.

For CCR plans, you can now set the bailout switch time.

Bailout is now more clearly shown on the plan chart. 4.00 07/07/2025 The NDL Tool has been updated to use a more standardized calculation method.
In the dive planner, you can now set the Bailout GF and Bailout Point.
We’ve also fixed several bugs. 3.90 06/28/2025 - bug-fixes 3.80 01/14/2025 Added option for Lifetime subscription. 3.70 10/10/2024 - bug-fixes and tweaks 3.60 06/13/2024 - dive log now supports Shearwater Tern
- added tank types: LP85, HP80, HP100, HP117, HP120, HP133
- minor bug-fixes 3.50 02/15/2024 - ICD warning fixed
- added to dive log: ceiling and next stop chart
- fixed multiple tank transmitter issue
- fixed auto merge dive
- minor bug-fixes 3.40 01/07/2024 - blender bug-fix 3.30 11/13/2023 - now you can set the switch depth for the second bailout gas
- minor bug-fixes 3.20 09/20/2023 - added Gas Density Tool
- minor bug-fix on slate 3.10 09/12/2023 Various bug fixes and tweaks. 3.00 09/04/2023 - minor bug-fixes 2.90 07/22/2023 - dive log is now synced between your devices
- added planner setting to exclude O2 as narcotic (END)
- minor bug-fixes 2.80 07/12/2023 - minor bug-fixes 2.71 03/18/2023 - DiveLog chart: added EAD, END, gas density, and ppN2
- Planner: improved gas auto selection
- Planner: rearrange points with a long tap
- minor bug-fixes 2.70 03/15/2023 Support for Shearwater Petrel 3 and Perdix 2. 2.60 03/08/2023 - minor bug-fixes
- added 2 x 9L tank 2.50 01/31/2023