# Cotrio — user reviews

> 8 indexed App Store user reviews of Cotrio by Bartosz Bialek, rated 4.40/5 from 25 ratings.

- Source: https://appshunter.io/ios/app/cotrio/id1217055123/reviews
- App overview in markdown: https://appshunter.io/ios/app/cotrio/id1217055123.md
- Rating breakdown: 5★ 20 · 4★ 1 · 3★ 0 · 2★ 2 · 1★ 2

## Most critical reviews (8 lowest-rated)

### 1/5 — Does not work.

*2018-03-12*

Load screen appears for 20 seconds, then it crashes.  Every single time.

**Developer response:** Hi this is Bartek - developer of Cotrio
I'm looking into Can you sand me a an email at cotrio@bialek.xyz so I could investigate your issue in-depth?

### 1/5 — Like the other guy did...crash

*2018-03-12*

Might be a great game, couldn't tell you since it won't even open, just freezes my iPad.

**Developer response:** Hi this is Bartek - developer of Cotrio
Could you contact at cotrio@bialek.xyz so I could investigate your issue in-depth?
I'll do what's possible so you can enjoy Cotrio

### 2/5 — No sound

*2018-03-10*

Fun and challenging gameplay but I was looking forward to the soundtrack and it’s not playing at all, tried changing settings and restarting game

**Developer response:** Hi there,
Please write to me at  support email cotrio@bialek.xyz I will try to help you solve this case.

You can download Cotrio soundtrack via Cotrio social media account

Best regards
_BB

### 5/5 — Love the app

*2018-04-27*

This is a fantastic game. It is deceptively simple. It keeps you on your toes with simple addition and subtraction. The graphics are great!

**Developer response:** Hi Bartek here,
I'd love to help you play the game - please write at support email cotrio@bialek.xyz
I'll have a look. I'm very sorry for your inconvegnence

### 5/5 — Excellent

*2018-03-27*

Easy to navigate! Super addicting!

### 5/5 — So addicting!

*2018-03-27*

This is my new favorite for sure! I love any kind of logic/word/numbers game and I can't stop playing this one.

### 5/5 — A challenging addiction!

*2018-03-16*

Beautifully designed, masterfully crafted, and a nightmare to beat!

Prepare to lose sleep over heating this one!

### 5/5 — Creative and Challenging

*2018-03-07*

I play a lot of games but have never played one quite like this. The rules are simple but the game gets deceptively difficult. Don’t worry if you don’t like math - this is just simple addition - but it gets your brain going. I am going to be playing this one a lot.

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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.*