# Simple Hex Calc — user reviews

> 34 indexed App Store user reviews of Simple Hex Calc by Hiroki Ishiura, rated 4.50/5 from 8 ratings.

- Source: https://appshunter.io/ios/app/simple-hex-calc/id335773208/reviews
- App overview in markdown: https://appshunter.io/ios/app/simple-hex-calc/id335773208.md
- Rating breakdown: 5★ 7 · 4★ 0 · 3★ 0 · 2★ 0 · 1★ 1

## Newest reviews (10 of 34)

### 5/5 — 使いやすいです。

*2015-07-21*

仕事でどうしてもHEX/BIN計算が必要なのでいろいろと試してみましたが、これが一番いいです。
使いやすいデザインって自然とかっこよくなるものなんですね。

### 5/5 — Signed Hex

*2014-09-26*

Love it, now I can get the Hex for my signed 11, 12, 13, etc bit width register values for my chip designs. 

Thanks!

### 5/5 — What I've been looking for

*2014-03-28*

I've been looking for a fast, easy way to perform operations and conversions on hexadecimal numbers while reverse engineering. Finally, I stumbled upon this.

Does everything I could ask for, bitwise ops, decimal to hex conversion, you name it. Looks beautiful too, like a stock iOS 7 app. Manual explains everything. Best calculator app I've seen.

I'll be using this daily.

### 5/5 — Very thought out

*2013-12-14*

The developer has thought about many things missing in other programmer calculators. It has a lot of nice little touches and functions as expected. Definitely a keeper for me. I will use it for programming related arithmetic.

* Please add exponential operator. This is severely limiting.

### 5/5 — ぜひDLして使ってください！

*2013-10-31*

バージョンアップでメチャメチャ使い勝手が良くなりました。
個人的には★5個でも足りません！これからも末長く使って行きたいアプリです。

### 5/5 — AWESOME!

*2012-02-03*

Best calculator of its kind. Does what I need it to.

Pls reduce the opacity of the info(i) button. It is too distracting.

### 5/5 — シンプルで使いやすい！

*2011-10-09*

自分の仕事レベルにちょうどいい、シンプルで使いやすい。
技術計算ではなく、基数変換とかチョットしたIT仕事で使うにはベスト。

### 5/5 — いいですね

*2010-12-24*

表示窓右下にbin oct dec hex が表示されれば最高ですね。

### 4/5 — すばらしい

*2010-08-07*

おおむね満足していますが、あえて改善要望を書くとするならば64bit長での2進表示が実用的でないことと、ビットシフトができれば星5個になります。ローテートは要りません。

### 5/5 — 最高

*2010-06-23*

快適動作で、クリック感が素晴らしい。

## Most critical reviews (10 lowest-rated)

### 1/5 — Poorly functioning features

*2014-11-27*

The binary functions do not work!

The website for the app is also in Japanese, with no indication of how to contact customer support.

### 3/5 — メモリー機能が欲しい

*2010-12-18*

2進、8進、16進変換や論理演算は便利。でもメモリー機能が欲しかった。同じ値で、いろいろな数と論理演算するような場合、マスク値をいちいち入力しなくてはならないので面倒。改善希望。

### 4/5 — Great app except...

*2017-03-27*

AND function doesn't work as expected. E.g. Binary 110 and 11 returns 0?? Expected 10

**Developer response:** Thanks a bug report. I'll fix it on the next version. The issue occurs by  'AC/C' after '='. Try workaround that double tap 'AC/C'.

### 4/5 — One problem

*2016-06-18*

The MOD operator doesn't work. It always returns 0 even when that is the wrong answer. Otherwise I like this app.

**Developer response:** I guess this issue occurs by 'AC/C' after '='. if then try workaround that double tap 'AC/C'. I'll fix it on the next version.

### 4/5 — Great converter

*2011-08-29, version 1.4.81*

Finally a straight forward calculator/converter that's easy to use and includes basic boolean functions. What more could I ask for a buck?

### 4/5 — 素晴らしいですが

*2011-05-24*

10進時のみ小数点付きの計算ができると完全に電卓はこれ1本でいけるので嬉しいです。
あと起動が速ければ申し分ないです。

### 4/5 — キーのクリック音がうるさい

*2011-01-30*

機能的には満足してますがキーを押すたびにカチカチ音がするのがうるさい。
しかも、音量を０にしても全く変らないのは嫌がらせとしか思えない。
ON/OFFできるようにするか、せめて音量変更に従って欲しい。
電卓としての機能は満足しているので、電卓として使うときはヘッドフォンをつっこんだままにします。

### 4/5 — シンプルなデザインが良い

*2011-01-11*

10進数のときだけ小数が使えないため他の電卓を併用しなくてはいけないのが残念。
個人的にはビット長が自由に選べると完璧です。

### 4/5 — 8進数が使えるのがいいね！

*2010-09-24*

2進数、16進数は、他のアプリにもありましたが、8進数が使えるのを探していたので、ちょうどよかったです。

### 4/5 — Calculadora

*2010-08-30*

Este pgm eh muito bom. Simples e facil de operacao. Ideal para quem quer converter e calcular em Decimal, Binario e Hexadecimal.

## Most praised reviews (10 highest-rated)

### 5/5 — 更なる希望

*2022-05-11*

とても使いやすいです
希望として3点あります
1、2進表記のとき該当ビットをタップすると反転するとうれしい
2、希望桁に対してゼロ埋めしたい
3、選択した表記以外もどこかに表示して欲しい
以上、期待します

### 5/5 — Solid app

*2019-09-16*

Thank you, dear dev, for having enough faith in users to put out a great paid app with no ads or in-app purchases. It’s ridiculous what some apps have become.

Totally worth a dollar. And look at that download size: less than 10MB!! In 2019!!

### 5/5 — Well worth it!

*2017-03-07*

Wished I had gotten this before my last TCP/IP class test since it would have made it much easier than doing manual calculations of hex to decimal! Only thing I wished this had was somewhere to switch to basic calculator since I find myself having to switch from this to iOS calculator just to do simple math with percentages and decimals. All in all awesome app!

### 5/5 — MODが重宝

*2016-12-12*

便利です。よくぞMOD計算（モジュロ計算＝わり算のあまり算）を付けてくれました！このために買いましたから！

### 5/5 — Just what I wanted!

*2016-12-08*

This calc is amazing. It is exactly what I was looking for! It even looks like the standard iOS calculator, which is really nice. Also, it has a manual that tells you exactly what each feature does. I pretty much NEVER pay for apps, but this is well worth the 99 cents. (Not a paid review)

### 5/5 — Quality

*2016-06-29*

The best!

### 5/5 — Even a manual!!!

*2016-05-08*

No flaws and comes with a manual, it's perfect. Maybe RPN for an encore. But seriously, a perfect app!

### 5/5 — Great Calculator!

*2016-04-09*

I have been using this app for a long time now. Still love it.

### 5/5 — Great app now works fine on iPad!

*2016-04-05, version 3.0.1374*

Just a few days after I noticed the bugs on iPad and the fact it hasn't been updated for a long time and maybe I'd have to look for something else, this update came up !!!
Fixes my problem and I must say Thank You !

### 5/5 — Fantastic!

*2015-08-27*

I always give this to my friends in math and watch them freak out about there being letters!

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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 2026-08-13.*