# AddCalc PRO — Adder & normal Calculator

> Dual-mode calculator with customizable interface and advanced calculation features. (iPhone/iPad app by Shinichi Aokawa.)

- Source: https://appshunter.io/ios/app/addcalc-pro/id502862030 (this page in markdown: same URL + `.md`)
- Developer: [Shinichi Aokawa](https://appshunter.io/developer/502862033)
- Category: Productivity, Utilities
- Price: $0.99 (on sale, was $2.99)
- Age rating: 4+
- Requires: iOS 15.6 · 4 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Russian, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2012-02-22
- Data updated: 2026-09-09
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/addcalc-pro/id502862030/reviews.md

## What is AddCalc PRO?

Do you know the calculator of optimal adder method for an accounting calculation? 
(with the calculation method change function) 
Try it on iPhone and iPad you always carry around.

【Feature】
- This can switch an "adder calculator" and "ordinary calculator"
- The design of a button can be chosen
- The regulating function of a background color and brightness 
- Select your favorite sound from sound effects
- Input log editing + recalculation function
- Voice reading of the input log
- Copy the log and total (paste to memo etc)
- Display switching function digit after the decimal point (FULL · 0 ~ 6 digits)
- The (up-truncation Ri rounded-off) Rounding switching function
- 14 Number of significant digits
- Always display "GT:Grand Total"
- Always display "MR:Memory"
- BS:BackSpace function

【How to use an adder calculator】
”(10×10)+(5×5)-(6×5)=95” 
10 [×] 10 [+=] 5 [×] 5 [+=] 6 [×] 5 [-] [GT]  
（10×10）Add（5×5）Add（6×5）Pull

% Calculation example : 500 + (500 × 12%) = 560
500 [+=] 12 [%] [+=]

【How to use an ordinary calculator】 
”(10×10)+(5×5)-(6×5)=95”
10 [×] 10 [=][M+] 5 [×] 5 [=][M+] 6 [×] 5 [=] [M-][MR]
Added to the Grand Total by "="
 
The continuous input will be "10×10+5×5-6×5=2595"

% Calculation example : 500 + (500 × 12%) = 560
500 [+] 12 [%] [=]

## Key features

- Dual calculator modes (adder and standard)
- Customizable button design, background, and brightness
- Selectable sound effects
- Input log editing and recalculation
- Voice reading of input log
- Copy log and total functionality
- Decimal point and rounding switching

## Recent user reviews (10 of 14)

All indexed reviews: https://appshunter.io/ios/app/addcalc-pro/id502862030/reviews.md

### 5/5 — 愛用しています

*2024-05-15*

仕事周りを加算機電卓で固めている身としては、とてもありがたいアプリです。最近外貨計算の頻度も多いので、ADD2モードがラウンドセレクターに増えたりしないかなあと思ったりしています（カシオ式キヤノン式どちらでも大丈夫ですが、カシオ式の方が好みです）。

**Developer response:** ご利用ありがとうございます。

ADD2モードでは加減算以外の乗除算などの計算を無効にするなどの必要があり、本アプリ独自の機能との関係を加味すると多くの制限が発生すると考えられ、問題点を十分に検討する時間を有します。

### 3/5 — 旧バージョン使用ですが、0を足すと…

*2022-08-14*

長年、愛用していて今さら気付いたのですが、0を足した時の結果が変です。
2+2+0=2になります。左上のGT表示は4です。
今すぐは新バージョン導入できないので、新では直ってるかもしれませんが。

**Developer response:** AddCalc PRO（加算式電卓）をご利用いただき有難うございます。
最新バージョンのVer.15.5.1をリリースいたしましたのでアップデート後、ご確認をお願いしたします。

### 4/5 — テンキー入力に対応してもらえたら嬉しい

*2021-06-19*

リアル電卓の加算式はもう数種類しかなく、さらに大きいものばかりなのでこのアプリには本当に助かっています。税の計算などはやっぱり加算式のほうが便利。ただ、タッチパネルでのキー入力はタイプミスが起きるので、テンキー入力に対応して欲しいです。リアル電卓的な入力感で、活用の幅が広がると思います。よろしくお願いします!!

### 5/5 — o(^▽^)o

*2015-07-11*

すごく便利でいいもの手に入りました（＾∇＾）

### 2/5 — 音が出なくなりました

*2015-06-28*

OSをバージョンアップしましたら音が出なくなり、魅力半減です。

**Developer response:** ご報告ありがとうございます。即時バグ修正いたしましたのでご確認下さい。

### 5/5 — すごくいい！！

*2015-05-21*

アップデートで更に使いやすくなりました！！

対応も早くてとても助かります♪

### 5/5 — 朗報！完璧な加算機！

*2014-07-19*

7.5.5アップデートで演算方式が変更され、国産メーカーの加算式電卓と同じ操作で計算出来るようになりました。対応ありがとうございます。JS25など携帯サイズの加算機が廃番になってお困りの方には朗報です。

### 5/5 — 환불요청

*2014-07-09*

제가 버튼을 잘못 눌렀어요. 바로 구입 취소했는데 결제만 되고 어플 다운은 되지도 않았어요. 환불해주세요. ㅠㅠ

### 5/5 — 素晴らしい

*2014-07-08*

加算器しか使えない人間からすると、神アプリ。
ありがとうございます（≧∇≦）

### 5/5 — 大活躍！

*2013-10-31*

途中で間違えても当該箇所だけ
修正できる機能がめちゃめちゃ
嬉しいです！
キーの音量がアプリ内でも操作
できたらなお嬉しいです。

## Frequently asked questions about AddCalc PRO

### What is the adder calculator method in AddCalc PRO?

The adder calculator method is designed for accounting calculations where you can add or subtract intermediate results to a Grand Total. For example, (10x10) + (5x5) - (6x5) = 95.

### Can I customize the appearance of AddCalc PRO?

Yes, AddCalc PRO allows you to customize the button design, background color, and brightness. You can also select your favorite sound effects from a variety of options.

### Does AddCalc PRO support editing previous calculations?

Yes, AddCalc PRO features an input log editing and recalculation function. You can also edit the input log and copy the log and total to other applications like memos.

### What are the decimal and rounding options in AddCalc PRO?

AddCalc PRO allows you to switch the display of digits after the decimal point from FULL to 0-6 digits. It also offers a rounding switching function for up-truncation and rounding off.

### Is AddCalc PRO available on Android devices?

Based on the provided data, AddCalc PRO is supported on iPhone, iPad, and iPod. There is no information indicating support for Android devices.

### How often is AddCalc PRO updated?

The latest version of AddCalc PRO is 19.8, last updated on June 10, 2026. This indicates a history of updates, though the exact frequency is not specified.

### What is the price of AddCalc PRO?

AddCalc PRO is a paid application priced at $0.99. It does not appear to have any in-app purchases or advertisements.

### What is the age rating for AddCalc PRO?

AddCalc PRO has an age rating of 4+, making it suitable for a wide range of users, including children and adults.

## Version history (last 5 releases)

### 19.10 — 2026-08-15

Thank you for using “AddCalc”.
We have fixed bugs and improved performance so that you can use it more comfortably.

### 19.9 — 2026-07-13

Thank you for using “AddCalc”.
We have fixed bugs and improved performance so that you can use it more comfortably.

### 19.8 — 2026-06-10

Thank you for using “AddCalc”.
We have fixed bugs and improved performance so that you can use it more comfortably.

### 19.7 — 2026-05-15

Thank you for using “AddCalc”.
We have fixed bugs and improved performance so that you can use it more comfortably.

### 19.6 — 2026-05-03

Thank you for using “AddCalc”.
We have fixed bugs and improved performance so that you can use it more comfortably.

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## More apps by Shinichi Aokawa

- [AddCalc Freedom](https://appshunter.io/ios/app/addcalc-freedom/id562537493)
- [MyHoliday - 私の休日](https://appshunter.io/ios/app/myholiday/id638730082)
- [VoiceClock - Talking](https://appshunter.io/ios/app/voiceclock-talking/id660371546)
- [AnyCal PRO](https://appshunter.io/ios/app/anycal-pro/id725194896)
- [AnyCal](https://appshunter.io/ios/app/anycal/id725215673)

All apps by Shinichi Aokawa: https://appshunter.io/developer/502862033

## Related topics

[accountant calc pro](https://appshunter.io/ios/topics/accountant-calc-pro)

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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 2026-09-09.*