# TrimixCalc — user reviews

> 8 indexed App Store user reviews of TrimixCalc by frobese GmbH, rated 3.96/5 from 26 ratings.

- Source: https://appshunter.io/ios/app/trimixcalc/id713460902/reviews
- App overview in markdown: https://appshunter.io/ios/app/trimixcalc/id713460902.md
- Rating breakdown: 5★ 16 · 4★ 3 · 3★ 2 · 2★ 0 · 1★ 5

## Most critical reviews (8 lowest-rated)

### 1/5 — Needs to be corrected

*2024-08-29*

When the best mix section is set to Imperial units it is actually calculating in Metric. Ex: when a depth of 150’ is entered it shows a best mix of O2 of 9%

### 1/5 — Buggy

*2023-07-17*

Can’t fully evaluate since you can’t enter values in all fields. Have to reset setting’s preferences each time you open the app.

### 1/5 — Absolute waste of time and money!

*2023-03-12*

Scam app, charges you £3.99 to calculate the best mix beyond 60m. So I paid, and won’t calculate the best mix, past 120m. So for deep technical divers like me it’s a complete waste of money! And a scam, as it doesn’t explain before you buy it, it’s limited to 120m, otherwise I wouldn’t have bought it! Beware! Scam!

### 1/5 — DONT BUY

*2022-11-29, version 1.2*

Does not work. Significant math errors.

### 1/5 — Poor

*2019-04-26, version 1.2*

Doesn’t work   Purchased unlock and buttons don’t activate anything

**Developer response:** Hello, to help solving your problem can you please send an email to NitroxCalc@frobese.de

### 1/5 — O2 error

*2015-12-14, version 1.1.1*

O2 calculations are off by a factor of 2.  20% of O2 in a 3000 psi tank should be 600 psi. I think there is a mistake in the programming.

**Developer response:** Please send us the parameters to check the calculation. Have you considered, that topping with air increases the O2 ration in the tank?

### 2/5 — Disappointed

*2023-03-21*

Evening after paying the premium I cannot calculate a mix using any top off gas other than air. Basic requirement that is lacking in this app unfortunately

### 4/5 — Solid app for mixing

*2014-01-12, version 1.0*

Easy to use Interface which allows you to use your finger or type in values. I feel the touch is a little off and find myself hitting other tabs. The upgrade is $3.99 and would make an excellent choice if one were more serious about using this app.

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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 2026-06-10.*