MultiDeco 4+

HHS Software Corp.

Designed for iPad

    • 3.9 • 11 Ratings
    • $48.99



A dive decompression calculator for technical scuba divers.

MultiDeco presents the VPM and ZHL-16 decompression model and includes VPM-B, VPM-B/E, ZHL model versions and ZHL-16 + GF. The diver can specify any combination of nitrox or trimix, and as many deco gases as required. Planning methods include both OC and Closed Circuit Rebreather. It includes planning for bailouts with SCR and OC legs in a CCR plan. Includes details of ppO2, END, and gas consumptions.

This program includes many of the features from the desktop version such as conservatism adjustments, extended stops, adjustable last stops, the planning monitor system and extensive control over many other planning features.

Also included is a set of dive planning tools for calculating best mix, maximum operating depth (MOD), END, EAD and other planning considerations. The Mixer utility for blending nitrox and trimix, is included too.

What’s New

Version 1.102

update for iOS versions

Ratings and Reviews

3.9 out of 5
11 Ratings

11 Ratings

jm27937 ,

Decent iOS implementation

The iOS version has the basic functionality of the desktop software but is missing some of the features, such as running lost gas and OT/OD scenarios directly from the same profile. These can of course be done manually by editing the dive profile and recalculating. Generally I find the app quite handy and it lets me avoid bringing a notebook computer when traveling on dive trips.

An update for the native screen resolution of the iPhone 6 Plus and 6s Plus would be nice. It's been over a year already.

NCLewN ,

Does most of what you want

2020 - Buyers be aware that the purchase of this program is not transferable across platforms (mobile or desktop ). If you want to use it on both, you have to buy the program twice. I spoke with Customer Service and they confirmed I would have to purchase twice however that bit of info is not readily found on their website.

Ipfcolo ,


This app does not work on the newest iPhone continuously crashes

App Privacy

The developer, HHS Software Corp., 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


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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