# addition calc — Easy to add with big buttons

> Simple calculator with separate input and sum display, customizable decimal places. (iPhone/iPad app by Shozo Obayashi.)

- Source: https://appshunter.io/ios/app/addition-calc/id1453986143 (this page in markdown: same URL + `.md`)
- Developer: [Shozo Obayashi](https://appshunter.io/developer/1453986142)
- Category: Productivity, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 9.3 · 13 MB
- Languages: English, Japanese
- Released: 2019-03-01
- Data updated: 2026-06-11
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/addition-calc/id1453986143/reviews.md

## What is addition calc?

The input (lower row) and the sum (upper row) are separated, so you can always understand the answer.
How to use is simple, just enter the numbers and press the add button.
Four input operations can be performed on the input (lower row), and the results can be added.
You can set the total number of decimal places and rounding.
You can also activate the vibrator when you touch the iPhone.

## Key features

- Separate input and sum display
- Large buttons for easy input
- Supports four input operations
- Customizable decimal places
- Adjustable rounding settings
- Optional vibration feedback

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/addition-calc/id1453986143/reviews.md

### 5/5 — Great app!

*2019-03-12*

Love it! One suggestion: Would be good to add a click option for audio feedback when not looking at screen that you hit a key !

## Frequently asked questions about addition calc

### What is the main advantage of addition calc's display?

addition calc separates the input row from the sum row, allowing users to easily track their calculations and understand the final answer at a glance.

### Can addition calc handle decimal numbers?

Yes, addition calc allows you to set the total number of decimal places and rounding for your calculations, providing flexibility for precise results.

### Does addition calc support vibration feedback?

Yes, addition calc offers an option to activate the vibrator when touching the iPhone, providing tactile feedback during input.

### What devices is addition calc compatible with?

addition calc is designed for iOS devices, including iPhone, iPad, and iPod.

### What is the age rating for addition calc?

addition calc has an age rating of 4+, making it suitable for young users and adults alike.

### How often is addition calc updated?

The latest version of addition calc is 1.0.2, and it was last updated on May 29, 2020. Updates typically focus on stability and minor improvements.

### Does addition calc have ads?

No, addition calc does not contain advertisements, offering an uninterrupted user experience.

### Is addition calc free to use?

Yes, addition calc is available for free, with no in-app purchases required.

## Version history (last 5 releases)

### 1.0.2 — 2020-05-29

Compatible with iOS 13.

### 1.0.1 — 2019-09-11

You can copy to the subtotal frame by long-pressing the function addition total frame.

### 1.0.0 — 2019-06-13

New function It is possible to replace the four arithmetic operation buttons and the erasure code conversion button.

### 0.9.9 — 2019-04-26

You can now change the color of the screen.
You can now choose from seven preset colors.

### 0.9.8 — 2019-03-27

Function addition (iPhone only)
Added a setting that can generate a click feeling (vibration) when tapping the button.

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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 2026-06-11.*