# Calculator - PRO

> Multitasking calculator app with four rotation-based modes for iPad and iPhone. (iPhone/iPad app by 其跃 吴.)

- Source: https://appshunter.io/ios/app/calculator-pro/id1219793972 (this page in markdown: same URL + `.md`)
- Developer: [其跃 吴](https://appshunter.io/developer/660989470)
- Category: Reference, Finance
- Price: $0.99
- Rating: 4.75/5 from 12 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 2 MB
- Languages: English, Chinese
- Released: 2017-04-01
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/calculator-pro/id1219793972/reviews.md

## What is Calculator?

A Multitasking Calculator for iPad & iPhone.

When you rotate your iPad, Calculator EX would change to 4 mode:
- Simple mode
- 2x mode (You can operate 2 calculators at once)
- 4x mode
- opposed mode

If you only want to use one mode, you could just need to rotate the device to select which mode you like, then lock the Rotation.

Enjoy it :D.

## Key features

- Four rotation-based modes
- Simple mode
- Dual calculator mode
- Quad calculator mode
- Opposed mode
- Rotation lock functionality

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/calculator-pro/id1219793972/reviews.md

### 5/5 — RE: Nice!

*2020-02-13, version 1.2*

I like this calculator because of it's clean and simple look, and with basic functions accessible without cluttering up the face with infrequently used features.  Also, switching to multiple calculators is easy as rotating your phone.  Highly recommended!

## Frequently asked questions about Calculator

### What modes does Calculator - PRO offer?

Calculator - PRO offers four distinct modes: Simple, 2x mode (dual calculator), 4x mode (quad calculator), and Opposed mode. These modes are accessible by rotating your iPad.

### Can I lock a specific mode in Calculator - PRO?

Yes, you can lock the rotation of your device to continuously use your preferred mode in Calculator - PRO. This allows for uninterrupted use of the selected calculator layout.

### What devices is Calculator - PRO compatible with?

Calculator - PRO is compatible with iPhone, iPad, and iPod devices. It also supports Apple Watch, offering calculations on multiple platforms.

### How much does Calculator - PRO cost?

Calculator - PRO is a paid application, available for a one-time purchase of $0.99. There are no in-app purchases or subscription fees associated with its use.

### What is the age rating for Calculator - PRO?

Calculator - PRO has an age rating of 4+, making it suitable for a wide range of users. This indicates it contains no mature content.

### When was Calculator - PRO last updated?

The latest version of Calculator - PRO, version 1.2, was last updated on April 24, 2019. The app was initially released on April 1, 2017.

### What is the user rating for Calculator - PRO?

Calculator - PRO has received an excellent user rating of 4.8 stars, based on 12 ratings. This suggests a high level of user satisfaction with the app's functionality.

### Does Calculator - PRO have ads?

Based on the provided information, there is no indication that Calculator - PRO contains advertisements. It is a paid app with no reported ad support.

## Version history (last 1 release)

### 1.2 — 2019-04-24

- Fixed 4x mode bugs.

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All apps by 其跃 吴: https://appshunter.io/developer/660989470

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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 2026-06-10.*