---
title: "MultiDeco - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "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 s"
---

# MultiDeco — United States

![MultiDeco App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/d0/00/eb/d000eb27-9993-1c80-c103-f828fd9ab6f5/AppIcon-0-0-1x_U007emarketing-0-11-0-85-220.png/434x0w.png)

**Developer:** [HHS Software](https://apptail.io/developer/hhs-software-NLK)
**Category:** Utilities
**Rating:** 3.9/5 (11 ratings)
**Price:** $48.99
**Bundle ID:** com.hhssoftware.multideco
**Store:** Apple App Store
**Country:** United States
**Version:** 1.111 (released 2026-07-30)
**Original Release:** 2014-03-17
**Languages:** English, Czech, Danish, Dutch, Finnish, French, German, Hungarian, Italian, Japanese, Korean, Norwegian Bokmål, Polish, Portuguese, Russian, Chinese, Slovak, Slovenian, Spanish, Swedish, Turkish

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id781437836)
**AppTail Page:** [https://apptail.io/app/multideco-NjHb/united-states](https://apptail.io/app/multideco-NjHb/united-states)

## MultiDeco Description
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.

## MultiDeco Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/19/bc/0b/19bc0be9-677e-3d97-cf2f-d5987f8c2a3c/Simulator_Screenshot_-_iPhone_17_Pro_Max_-_2025-10-22_at_01.14.31.png/1320x2868.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/c8/d1/1f/c8d11fea-8ab7-7305-0f6a-e5d796575e14/Simulator_Screenshot_-_iPhone_17_Pro_Max_-_2025-10-22_at_01.14.35.png/1320x2868.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/ea/83/59/ea83594f-427a-46ce-8741-08a1ce50b493/Simulator_Screenshot_-_iPhone_17_Pro_Max_-_2025-10-22_at_01.14.43.png/1320x2868.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/f9/23/ea/f923ea12-26f0-0f3b-3e76-b6b1b80f5dc7/Simulator_Screenshot_-_iPhone_17_Pro_Max_-_2025-10-22_at_01.14.49.png/1320x2868.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/b6/b9/55/b6b95505-86e9-2ef9-cb1a-edca45182eee/Simulator_Screenshot_-_iPhone_17_Pro_Max_-_2025-10-22_at_01.14.56.png/1320x2868.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/17/1c/d5/171cd51f-8db1-9e95-73fb-bf4cba27a629/Simulator_Screenshot_-_iPhone_17_Pro_Max_-_2025-10-22_at_01.15.01.png/1320x2868.png)

## MultiDeco Rating Breakdown in United States
- 5 stars: 6 (55%)
- 4 stars: 1 (9%)
- 3 stars: 2 (18%)
- 2 stars: 1 (9%)
- 1 stars: 1 (9%)

## MultiDeco Reviews in United States

### *---- "Crashes"
This app does not work on the newest iPhone continuously crashes
-- Ipfcolo, 2023-11-11

### **--- "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.
-- NCLewN, 2022-11-21

### ***-- "Needs an update for iphone8 Plus and ipads"
I had written this review when I had iPhone 6 Plus and now using 8 Plus, still have issues with pull down truncating, the app configuration window does not scroll fully on the iPad so I can’t configure those options...

I hope you can fix this as it is my go to app for trimix dive planning.

Thanks!

On the iPhone 6 Plus, some of the display options are truncated, such as Equiv air depth, MOD, if you select Depth pull down, after 99, it shows 1…. making all the following display not readable. It seem that the pull down option area could be widened so you can show 3 digits, this appears in other areas of the app as well like P02 set so anything above 1.0 gets clipped to 1…. 

The app is very useful and you can still use it, but for an app that is $54.99 I hope that you keep the app up to date.

Thanks
-- This product is DOA, 2017-12-09

### ***-- "Good products, lazy developer"
It's the only game in town, but the developer really needs a designer.  It's still not formatted for the larger screens and overall the UI is pretty bad.  One day someone with similar tech diving knowledge is going to come along with a really good UI and knock HHS off its throne.  Lesson: never rest on your laurels.  Always keep improving.
-- kdubnyc, 2016-08-12

### ****- "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.
-- jm27937, 2015-10-18

### *---- "Lacking updated UI"
This app is an exercise in how long you can put off and delay updating the UI. Needs an overhaul plus integration with the desktop app to be worth this price.
-- joshkehn, 2015-10-14

### ***-- "Almost..."
Its missing the ability to put both CCR and OC legs in the same dive plan (this option is available in the full Mac version).  This is a very useful function for easily calculating and figuring out bailout gases for CCR.  (The included bailout function isn't great).

This is functionality that they will hopefully add in the next version.  Sticking with the "full size" version for now.
-- CCR Diver, 2015-03-17

[View all MultiDeco reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)


## MultiDeco Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | United Arab Emirates | Utilities | #28 |
| Top Paid | South Korea | Utilities | #37 |
| Top Paid | Australia | Utilities | #48 |
| Top Paid | Lebanon | Utilities | #67 |
| Top Paid | Spain | Utilities | #72 |
| Top Paid | Egypt | Utilities | #142 |
| Top Paid | Finland | Utilities | #169 |
| Top Paid | Canada | Utilities | #178 |
| Top Paid | United Kingdom | Utilities | #179 |
| Top Paid | United Arab Emirates | Overall | #185 |
| Top Paid | Poland | Utilities | #186 |
| Top Paid | United States | Utilities | #198 |
| Top Paid | Belgium | Utilities | #216 |
| Top Paid | Thailand | Utilities | #217 |
| Top Paid | Hungary | Utilities | #241 |


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## MultiDeco Available In
- [United States](https://apptail.io/app/multideco-NjHb/united-states)
- [United Kingdom](https://apptail.io/app/multideco-NjHb/united-kingdom)
- [Germany](https://apptail.io/app/multideco-NjHb/germany)
- [Poland](https://apptail.io/app/multideco-NjHb/poland)
- [Italy](https://apptail.io/app/multideco-NjHb/italy)
- [Russia](https://apptail.io/app/multideco-NjHb/russia)
- [Brazil](https://apptail.io/app/multideco-NjHb/brazil)
- [Ukraine](https://apptail.io/app/multideco-NjHb/ukraine)
- [Netherlands](https://apptail.io/app/multideco-NjHb/netherlands)
- [France](https://apptail.io/app/multideco-NjHb/france)
- [Canada](https://apptail.io/app/multideco-NjHb/canada)
- [Hungary](https://apptail.io/app/multideco-NjHb/hungary)
- [United Arab Emirates](https://apptail.io/app/multideco-NjHb/united-arab-emirates)
- [South Korea](https://apptail.io/app/multideco-NjHb/south-korea)
- [Philippines](https://apptail.io/app/multideco-NjHb/philippines)
- [Finland](https://apptail.io/app/multideco-NjHb/finland)
- [Sweden](https://apptail.io/app/multideco-NjHb/sweden)
- [Singapore](https://apptail.io/app/multideco-NjHb/singapore)
- [Kazakhstan](https://apptail.io/app/multideco-NjHb/kazakhstan)
- [Spain](https://apptail.io/app/multideco-NjHb/spain)
- [Greece](https://apptail.io/app/multideco-NjHb/greece)
- [Türkiye](https://apptail.io/app/multideco-NjHb/turkey)
- [Taiwan](https://apptail.io/app/multideco-NjHb/taiwan)
- [Egypt](https://apptail.io/app/multideco-NjHb/egypt)
- [Australia](https://apptail.io/app/multideco-NjHb/australia)
- [Austria](https://apptail.io/app/multideco-NjHb/austria)
- [Portugal](https://apptail.io/app/multideco-NjHb/portugal)
- [Lebanon](https://apptail.io/app/multideco-NjHb/lebanon)
- [Lithuania](https://apptail.io/app/multideco-NjHb/lithuania)
- [Luxembourg](https://apptail.io/app/multideco-NjHb/luxembourg)
- [Latvia](https://apptail.io/app/multideco-NjHb/latvia)
- [Malta](https://apptail.io/app/multideco-NjHb/malta)
- [Mexico](https://apptail.io/app/multideco-NjHb/mexico)
- [Malaysia](https://apptail.io/app/multideco-NjHb/malaysia)
- [Nigeria](https://apptail.io/app/multideco-NjHb/nigeria)
- [Norway](https://apptail.io/app/multideco-NjHb/norway)
- [New Zealand](https://apptail.io/app/multideco-NjHb/new-zealand)
- [Peru](https://apptail.io/app/multideco-NjHb/peru)
- [Pakistan](https://apptail.io/app/multideco-NjHb/pakistan)
- [Romania](https://apptail.io/app/multideco-NjHb/romania)
- [Saudi Arabia](https://apptail.io/app/multideco-NjHb/saudi-arabia)
- [Slovenia](https://apptail.io/app/multideco-NjHb/slovenia)
- [Slovakia](https://apptail.io/app/multideco-NjHb/slovakia)
- [Thailand](https://apptail.io/app/multideco-NjHb/thailand)
- [Vietnam](https://apptail.io/app/multideco-NjHb/vietnam)
- [South Africa](https://apptail.io/app/multideco-NjHb/south-africa)
- [Argentina](https://apptail.io/app/multideco-NjHb/argentina)
- [Azerbaijan](https://apptail.io/app/multideco-NjHb/azerbaijan)
- [Belgium](https://apptail.io/app/multideco-NjHb/belgium)
- [Bahrain](https://apptail.io/app/multideco-NjHb/bahrain)
- [Brunei](https://apptail.io/app/multideco-NjHb/brunei)
- [Belarus](https://apptail.io/app/multideco-NjHb/belarus)
- [Switzerland](https://apptail.io/app/multideco-NjHb/switzerland)
- [Chile](https://apptail.io/app/multideco-NjHb/chile)
- [China](https://apptail.io/app/multideco-NjHb/china)
- [Colombia](https://apptail.io/app/multideco-NjHb/colombia)
- [Cyprus](https://apptail.io/app/multideco-NjHb/cyprus)
- [Czechia](https://apptail.io/app/multideco-NjHb/czechia)
- [Denmark](https://apptail.io/app/multideco-NjHb/denmark)
- [Dominican Republic](https://apptail.io/app/multideco-NjHb/dominican-republic)
- [Algeria](https://apptail.io/app/multideco-NjHb/algeria)
- [Ecuador](https://apptail.io/app/multideco-NjHb/ecuador)
- [Grenada](https://apptail.io/app/multideco-NjHb/grenada)
- [Hong Kong SAR China](https://apptail.io/app/multideco-NjHb/hong-kong)
- [Croatia](https://apptail.io/app/multideco-NjHb/croatia)
- [Indonesia](https://apptail.io/app/multideco-NjHb/indonesia)
- [Ireland](https://apptail.io/app/multideco-NjHb/ireland)
- [Israel](https://apptail.io/app/multideco-NjHb/israel)
- [India](https://apptail.io/app/multideco-NjHb/india)
- [Iceland](https://apptail.io/app/multideco-NjHb/iceland)
- [Japan](https://apptail.io/app/multideco-NjHb/japan)
- [Kuwait](https://apptail.io/app/multideco-NjHb/kuwait)

---

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