# BrainHack — user reviews

> 9 indexed App Store user reviews of BrainHack by Katsuma Tanaka, rated 4.17/5 from 6 ratings.

- Source: https://appshunter.io/ios/app/brainhack/id959976921/reviews
- App overview in markdown: https://appshunter.io/ios/app/brainhack/id959976921.md
- Rating breakdown: 5★ 1 · 4★ 5 · 3★ 0 · 2★ 0 · 1★ 0

## Most critical reviews (9 lowest-rated)

### 4/5 — Perfect with one bug

*2021-06-07*

I love this app it’s good but I found a bug I was making a truth machine with the following code 

,.>++++++++++++[-<---->]++++++++++++<-[]+>[-<++++>]+[<.>]

It ran fine on my and other compilers but when I tried in the app it dident 

The bug is how when the cell is not 0 it shouldn’t continue in a loop but it did I hope u can fix it

### 4/5 — Nice app

*2019-09-21, version 1.1.0*

Overall, amazing app, however, the ability to add comments would be amazing.

### 4/5 — Works great! Has a handy built-in bf keyboard

*2019-03-09, version 1.1.0*

Like others have mentioned, it needs to show current position of the data pointer. Would be nice to have cursor controlls and copy/paste. Also good would be a larger array.

### 4/5 — Good, But Change One Thing

*2017-12-19, version 1.1.0*

plz make an indicator to show which box you are currently in when running the program. Also, when I tried to send feedback the app crashes. One more feature would be a “undo” button, like ctrl+z

### 4/5 — Great

*2016-12-28, version 1.1.0*

Really fun, would be great to have Ook and spoon variants^^

### 4/5 — Fantastic app!

*2015-07-21, version 1.1.0*

Being able to watch the program be interpreted in real time is very well done. The only feature I'd ask for is an identifier of where the pointer is. Maybe, the current byte is surrounded by a square to highlight it? Just a suggestion.

The file system is exactly what I'm looking for: very simple and effective. The helper keyboard is very effective, it makes the a programming a lot easier. The ASCII table could be easier to access, though. I'd say in general:

++++++++++[>+++++++>+++++++++++>++++++++++>+++<<<<-]>+.>++++.>+.----.<++.>>++.<.<----..>>+.

Thanks for developing this! :)

### 4/5 — Amazing app

*2015-07-14, version 1.1.0*

This application is great for the price. There haven't been any problems so far that I can see. I've made a Hello World and a number multiplier. 2 features I would recommend is the option to enter numbers directly instead of their Ascii counterparts, and a better ability to handle multiple character input. I don't know the specification, but I think it should enter each character separately until it reaches the end of the user's input then place a 0 in the final cell. Great other than that though!

### 5/5 — Great !

*2016-11-17, version 1.1.0*

This brainf interpreter works really well and the live state of every memory cell is very handy. Try that out (enter a two digits number, for 10, enter 1 and then in the second entry enter 0. For 2 enter 0 and then 2) :
>+++++++[-<+++++++>]<->>,<<[->+>-<<]>>[->>>++++++++++<<<],<[-<+>>-<]>[->>>+<<<]+++++++[-<++++++>]>>>[->+<<+<+<<.>>>>]>--<<<--<++++++++++.>>>>>++++++++++++++++++++++++++++++++<<<<[-<<.>>>>>[-<+>>.<]<[->+<]<<<<.>><.>]>[-<<<.>>>]
++++++++++.

### 5/5 — Excellent!

*2016-01-04*

Easy debugging with the visible tape and step by step mode. 
Great 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 2026-06-02.*