The pocket calculator for Apple Watch that runs even without your iPhone nearby!
Its smart design makes it easy to tap large keys quickly and accurately. It even works on your iPhone and iPad.

Pocket Calculator is useful when shopping, at restaurants, or anywhere on the go. It calculates tax, tip, or splitting checks.

All features are available as a free trial. Afterwards, unlock the app via in-app purchase.

- Basic four arithmetic operation functions
- Theme color (default, monochrome, red, blue, yellow)
- Display of input formula
- Constant calculation
- GT (ground total) function
- Landscape display is available for iPhone 6/7/8 Plus, iPhone Xs Max, iPad
- Memory function
- 24 significant digits
- Tax included calculated without tax
- Chip calculation
- Split the bill
- There is also a function to adjust division.
- Supports the following functions by switching of uses
- Adder method function
- Decimal, hexadecimal conversion function
- Use as a counter
- You can play music with the instrument function
You can select sounds and scales by setting.
It can not be used during Voice Over.
- Constants and conversion formulas can be registered with memo function
- It can assign to a key
If you assign to more than three keys, required to purchase in-app item.

Apple Watch
- Various key arrangements
- 3 x 5 and 3 x 4, 3 x 3, 2 x 2 key arrangement can be selected
- Arrangement for the right hand then left hand
- Quick page move
- It is divided into multiple pages,
Paging can be swiftly done with swipe and digital crown
- Move to numeric input page automatically by inputting operator etc.

What’s New

Version 1.9

Thank you for using Woo-Dentaku.
Changes version 1.9
- You can assign a constant or a memo to a key.
If you assign to more than three keys, required to purchase the ​in-app item.
- Add theme colors.
- You can select uses to display

Ratings and Reviews

5.0 out of 5
1 Rating
1 Rating


35.6 MB

Requires iOS 9.0 or later. Compatible with iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, iPhone XS Max, iPhone XR, iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro, 12.9-inch iPad Pro Wi-Fi + Cellular, 9.7-inch iPad Pro, 9.7-inch iPad Pro Wi-Fi + Cellular, iPad (5th generation), iPad Wi-Fi + Cellular (5th generation), 12.9-inch iPad Pro (2nd generation), 12.9-inch iPad Pro Wi‑Fi + Cellular (2nd generation), 10.5-inch iPad Pro, 10.5-inch iPad Pro Wi‑Fi + Cellular, iPad (6th generation), iPad Wi-Fi + Cellular (6th generation), iPad Pro (11-inch), iPad Pro (11-inch) Wi-Fi + Cellular, iPad Pro (12.9-inch) (3rd generation), iPad Pro (12.9-inch) (3rd generation) Wi-Fi + Cellular, iPad mini (5th generation), iPad mini (5th generation) Wi-Fi + Cellular, iPad Air (3rd generation), iPad Air (3rd generation) Wi-Fi + Cellular,and iPod touch (6th generation). Apple TV.


English, Chinese, Japanese, Korean, Simplified Chinese, Traditional Chinese

Age Rating
Rated 4+
In-App Purchases
  1. Full-time access $1.99
  2. Hide the ad banner. $1.99
  3. Unlock restrictions of watch $1.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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