# Nitrox Buddy — user reviews

> 47 indexed App Store user reviews of Nitrox Buddy by Gereon Steffens, rated 4.88/5 from 468 ratings.

- Source: https://appshunter.io/ios/app/nitrox-buddy/id572411073/reviews
- App overview in markdown: https://appshunter.io/ios/app/nitrox-buddy/id572411073.md
- Rating breakdown: 5★ 394 · 4★ 27 · 3★ 7 · 2★ 2 · 1★ 1

## What do users think of Nitrox Buddy?

Overall sentiment: positive

**Pros**

- 👍 Easy to use
- 🚀 Quick calculations
- ✅ Accurate results
- 💡 Free to use
- 🎯 Essential for Nitrox divers
- 📱 Simple interface
- 🔄 Reliable and functional
- ✨ Helpful for dive planning
- 💯 Covers all necessary Nitrox calculations
- 👍 Highly recommended
- 🔧 Pragmatic tool
- 🤓 Great for staying sharp
- 👍 Perfect for all Nitrox calculations
- 👍 Double-checks fills
- 👍 Companion for Nitrox divers
- 👍 Fast and easy
- 👍 Great functions
- 👍 Quick calculator
- 👍 Easy to double-check safety
- 👍 Professional Divemaster use
- 👍 User-friendly
- 👍 Good visual and tinkering fun
- 👍 Simplifies math for planning and labels
- 👍 Works exactly as it should
- 👍 Clear user interface
- 👍 Handy for determining depth levels
- 👍 Straightforward
- 👍 User friendly
- 👍 Simple and clear
- 👍 Makes planning easy
- 👍 KISS principle at its best
- 👍 No ads
- 👍 No weird UI
- 👍 Best compared to others
- 👍 Very pleased
- 👍 Simple and clear
- 👍 Super practical
- 👍 Excellent light app

**Cons**

- 📱 Ugly iPad icon
- ⚠️ MOD calculation limited to 40% O2 in older versions
- ⚠️ MOD calculation limited to 50% O2 in older versions
- ⚠️ Needs to work with older iOS versions

**Commonly reported bugs**

- iPad icon is ugly
- MOD limit of 50% O2 despite 100% O2 setting (resolved)
- MOD limit of 40% O2 (older version)
- Does not work with older iOS versions

**Most requested features**

- Add MOD 1.5 option
- Allow MOD calculation up to 100% O2 and indicate max exposure duration
- Change color for inappropriate mixes (e.g., 50% at 40m)
- Support older iOS versions (5 & 6)

## Newest reviews (20 of 47)

### 5/5 — Great app

*2023-07-17, version 2.3.1*

Easy to use. Great functions

### 5/5 — Schönes Tool

*2023-07-16, version 2.3.1*

Praktische Schnelle Übersicht für Nitrox

### 5/5 — Does exactly what you need it to do.

*2023-07-13, version 2.3.1*

Quick calculator for nitric calculations.

### 5/5 — Great little App!

*2023-06-02, version 2.3.1*

This is a great tool to easy calculate your MOD or find the best mix for a specific dive depth. As a Florida-based weekly Nitrox diver I use this app all the time. My local dive shop has been having trouble with their bank fills lately, so I’ve been using Nitrox Buddy to double check my MOD. If you dive Nitrox, then you need this easy to use app!

### 5/5 — Simple et efficace

*2023-06-01, version 2.3.1*

Merci pour cette appli juste parfaite pour tous les calculs liés au Nitrox, tant pour le bloc principal que pour le pony 👍👌🏼

### 5/5 — Great app!

*2023-05-07, version 2.3.1*

Very easy to use! Highly recommended!

### 5/5 — Super App

*2023-04-05, version 2.3.1*

Super App

### 5/5 — A+

*2023-03-19, version 2.3*

Awesome app

### 5/5 — Simple and great

*2023-03-09, version 2.3*

Everything you need to quickly check and or double check to make sure your safe

### 5/5 — Nitrox buddy

*2023-01-22, version 2.2*

Absolutely loved it.

### 5/5 — Gets the job done quick and easy

*2023-01-22, version 2.2*

Quick, easy, and all you need. Well done.

### 5/5 — Great App

*2022-12-23, version 2.2*

I have used this app for over 4 years. I use it to plan dives all the time as a professional Divemaster

### 5/5 — Straightforward nitrox calcs, easy to use

*2022-11-06, version 2.2*

Provides the basics and is very user friendly.

### 5/5 — Love it!

*2022-09-18, version 2.2*

Use this app all the time! Even when I know the mix and depths. It is great to verify, can’t have enough redundancy when diving.

### 5/5 — Must have

*2022-09-17, version 2.2*

This app is straight forward and quickly allows me to determine my depth levels.  Other day first tank was 31% and second was 40% — this quickly let me feel comfortable knowing my limits.

### 5/5 — Great App for Nitrox

*2022-09-06, version 2.2*

The app gives you a good visual and is fun to let you tinker with mixtures. Very useful for those trying to understand nitrox for diving.

### 5/5 — Best Nitrox App Ever

*2022-08-10, version 2.2*

I use this app all the time while doing dive planning and essentially makes my math simple to do, especially when checking out my Nitrox tanks and filling out my tank labels. 

Thanks again Nitrox Buddy!

### 5/5 — Top

*2021-11-03, version 2.1*

Tut genau was es soll und ist kostenlos. Traumhaft! Vielen Dank!

### 5/5 — Very simple and accurate

*2021-07-04, version 2.0.1*

Couldn’t ask for more. Slide the bar, get the answers. Great app!

### 5/5 — Simplissime ! Excellentissime !

*2021-04-21, version 2.0.1*

Tout ce qu’il faut, rien que ce qu’il faut. Cette application devrait être obligatoire. Et en plus, c’est gratuit et le développeur est super réactif !
Et je viens de découvrir que ça fonctionne aussi sur l’Apple Watch (limite 50%).
Suggestion sur version iPhone : changer la couleur pour les mélanges non appropriés (ex: 50% à 40m...)
Merci.

## Most critical reviews (10 lowest-rated)

### 1/5 — Still no icon for iPad-looks ugly

*2020-05-20, version 1.8*

Will uninstall

### 2/5 — Needs to work with older iOs

*2013-12-30, version 1.3*

Great idea and I was going to buy Nitrox Buddy, until I found it would only work with 
iOs 7.  Since iOs 7 is not that popular, you'd sell more if your analyzer would work with 
iOs 5 & iOs 6.

### 4/5 — Super app !

*2015-04-06, version 1.3*

mais pourquoi brider le calcul de la MOD à 40% d'O2 au lieu de monter à 100% et d'indiquer la durée max d'exposition ?

### 4/5 — Awesome Thank You!

*2015-03-24, version 1.3*

The app is great easy to use, all values are correct, great functionality. It would be awesome if mod 1.5 was available.

### 5/5 — Accurate. Pragmatic.

*2025-10-31, version 2.3.1*

Great tool to stay sharp on EAN diving fundamentals.

### 5/5 — All things Nitrox for divers

*2025-08-23, version 2.3.1*

It’s great - what more can I say!

### 5/5 — Nitrox buddy

*2025-08-04, version 2.3.1*

If you dive nitrox it is a definite must app and I highly recommend it👍

### 5/5 — Great tool, thank you

*2025-01-28, version 2.3.1*

Works perfectly and easy to use

### 5/5 — Brilliant App!

*2024-12-30, version 2.3.1*

Very simple and easy to use. Accessible to all!  Highly recommended.

### 5/5 — Good app

*2024-12-21, version 2.3.1*

Very helpful

## Most praised reviews (4 highest-rated)

### 5/5 — Constant companion

*2024-09-16, version 2.3.1*

If you dive Nitrox in any capacity then this app is one of your best friends. Simple, accurate and easy to use. Plan your dive, verify your parameters or just play around.

### 5/5 — Super appli

*2024-05-24, version 2.3.1*

Super appli

### 5/5 — Can’t believe it’s all free!

*2023-09-23, version 2.3.1*

This app is awesome. Very helpful for nitrox diving.

### 5/5 — Great

*2023-09-23, version 2.3.1*

Quick and easy to use way faster then tables

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*