The DTS Gas Guru is a professional technical diving tool built for CCR and open circuit divers.
Designed for real-world diving, Gas Guru delivers fast and accurate calculations for Best Mix, MOD, END, EAD, gas density, and gas mixing with costing — all in one clean, reliable interface.
Whether you're planning deep trimix dives, analysing gas mixes, or checking safe operating limits, Gas Guru helps you make confident decisions underwater, built on the same dive-physics engine that powers DTS Dive To Survive.
WHAT'S IN THE TOOLKIT
• Best Mix — ideal O2/He blend for your target depth, PO2, and END (OC + CCR diluent)
• Gas Check — verify a fill against your PO2 limit or CCR setpoint, with MOD, END and density
• Mixer — Nitrox and Trimix blending, top-up planning, "what if" scenarios, decant calculations
• Density — gas density at depth against caution and critical thresholds, with adjustable water temp factored in
• Turn Pressure — quick turn-pressure calculations
• Min Gas — minimum gas reserve calculations
SAVE AND SYNC YOUR MIXES
Create a free account to sync your saved gas mixes across all your devices. Your data is end-to-end encrypted before it leaves your device. Gas Guru works fully offline; an account is only needed for cloud sync.
CLEAN, FOCUSED, NO ADS
No clutter, no ads, no distractions — just the numbers you need before you get in the water.
DESIGNED FOR
• Technical divers
• CCR divers
• Trimix divers
• Dive professionals and instructors
Built from real-world diving experience — not just theory — Gas Guru provides practical tools you can rely on when it matters most.
Plan it. Trust it. Dive it.
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
Gas mixing is substantially improved. Fill steps are now whole
bars you can stop a valve on, every plan shows the mix you will
actually get rather than the one you asked for, and a blend that
cannot be made says so instead of printing a recipe. Bleeds are
planned and priced, with the fill pressure that would avoid them.
Sign in and gas mix sync now work reliably. An account stays
optional: the calculator works in full without one.
Also: refreshed header, smaller download, various fixes.
Version Gas Guru v2.1.0
The developer, William Goodman, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
William Goodman
Size
4 MB
Category
Utilities
Compatibility
Requires iOS 15.6 or later.
iPhone Requires iOS 15.6 or later.
iPad Requires iPadOS 15.6 or later.
iPod touch Requires iOS 15.6 or later.
Mac Requires macOS 12.5 or later and a Mac with Apple M1 chip or later.
