# Dev Calc -Developer Calculator — user reviews

> 5 indexed App Store user reviews of Dev Calc by Toshiya Hondo, rated 2.00/5 from 2 ratings.

- Source: https://appshunter.io/ios/app/dev-calc-developer-calculator/id1576503219/reviews
- App overview in markdown: https://appshunter.io/ios/app/dev-calc-developer-calculator/id1576503219.md
- Rating breakdown: 5★ 0 · 4★ 0 · 3★ 0 · 2★ 2 · 1★ 0

## Most critical reviews (5 lowest-rated)

### 2/5 — App is awesome - but needs an Ad-Free version

*2024-10-04*

I have tried many different hex calculator apps and so far have found this to be the best except for the fact that it is missing an Ad-Free version for some reason. I can’t think why the developer would not give me the option to remove them with a simple in-app purchase.

### 2/5 — Needs Purchase Version

*2023-11-20*

Too many ads, but this app is exactly what I need for converting between hex and binary and performing changes to specific binary bits and then getting the edited string back in hexadecimal very quickly for RFID programming and modification

### 4/5 — 広告なしにして 有償でも良い

*2024-09-25, version 2.0.1*

仕事に使うので広告が出るのは目障りです。
有償でいいので広告を消せませんか。

### 4/5 — 広告消してほしい

*2021-09-22, version 1.1.2*

すごく便利な電卓です。
2進数で途中のビットを立てたり降ろしたりするのが面倒だったのですが、簡単にできるので助かってます。
有料オプションで広告を消せるようにしてほしいです。

### 5/5 — 機能に不満は無いですが

*2024-08-09, version 2.0.0*

欲を言わせて貰えば、ボタンの横幅を少し減らして縦（高さ）を少し広げて貰えると入力しやすいかなぁ、と。

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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 2026-06-04.*