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MultiDeco

MultiDeco

by HHS Software Corp.

11 ratings
15 reviews
🔧 Utilities
📊 Productivity
$48.99

Details

  • Released
  • Updated
  • March 17, 2014
  • July 30, 2026

Developer

HHS Software Corp.
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About

This app calculates dive decompression for technical scuba divers using VPM and ZHL-16 models. It supports various gas mixes, planning methods for open circuit and rebreathers, and includes tools for gas blending and depth calculations.

✓VPM and ZHL-16 decompression models
✓Support for nitrox and trimix
✓OC and CCR planning
✓Bailout planning
✓Gas blending utility
✓Depth calculation tools
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+1

What's New in MultiDeco

1.111

July 30, 2026

Bug fix for bail out tank selection issue.

User reviews

Most RecentHighest RatedLowest Rated

App Crashing

Anytime I try to change the model, the app crashes. Is being useless.
JhodgkissJhodgkiss

Crashes

This app does not work on the newest iPhone continuously crashes
IpfcoloIpfcolo

Seriously buggy

This app is abandoned, use at your own risk. It doesn’t work with the latest iOS update. The back or save buttons crash the app on any device I use.
Mr_LaggyMr_Laggy

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.
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NCLewNNCLewN

War schon mal besser

Läuft leider nicht mehr stabil auf dem IPhone 11. Zahlenwerte müssten am Display angepasst werden. Weiße Schrift auf gelben Hintergrund ist leider nicht lesbar.
Tom#58Tom#58
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Developer apps

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by HHS Software Corp.

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$48.99
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FAQ

What decompression models does MultiDeco use?

MultiDeco utilizes the VPM (Variable Permeability Model) and ZHL-16 (Haldane model) decompression models. It specifically includes VPM-B, VPM-B/E, ZHL model versions, and ZHL-16 + GF.

Can MultiDeco plan for different gas mixes?

Yes, divers can specify any combination of nitrox or trimix gases. The app also allows for planning with as many deco gases as required for a dive.

Does MultiDeco support rebreather planning?

Absolutely. MultiDeco supports planning methods for both Open Circuit (OC) and Closed Circuit Rebreather (CCR) systems. It also includes planning for bailouts with SCR and OC legs in a CCR plan.

What planning tools are included in MultiDeco?

The app includes tools for calculating best mix, maximum operating depth (MOD), Equivalent Narcotic Depth (END), Equivalent Air Depth (EAD), and other planning considerations. A Mixer utility for blending nitrox and trimix is also integrated.

What are the key features from the desktop version available in MultiDeco?

MultiDeco incorporates many desktop features, including conservatism adjustments, extended stops, adjustable last stops, the planning monitor system, and extensive control over other planning features.

What devices is MultiDeco compatible with?

MultiDeco is available for iPhone, iPad, and iPod devices. It is designed to run on iOS platforms.

How often is MultiDeco updated?

The latest version of MultiDeco is 1.109, last updated on November 11, 2025. Updates typically occur to improve functionality and compatibility.

What is the price of MultiDeco?

MultiDeco is a paid application, priced at $48.99. This one-time purchase grants access to all its decompression planning features.