Add & Subtract Master
Practice written calculation
$1.99 · Designed for iPad. Not verified for macOS.
Also Included In
One-time purchase with no ads or additional purchases. Recognition learns only from digits corrected during review, entirely on the device in use.
Add & Subtract Master is a focused iPhone and iPad practice app for elementary written addition and subtraction.
On iPhone, learners keep the full calculation visible while writing with a finger in one enlarged selected cell. On iPad, they can continue writing directly in the calculation cells with Apple Pencil or touch. The app checks the final answer while helping children align digits and build the flow of written calculation.
Handwriting is read as written, with a keypad available when recognition needs correction. Only digits corrected during review are stored on the device and used to tune recognition for it. Learning can be turned off, and saved corrections and the personal model can be reset at any time.
Missed questions return after a few more problems. Choose 5, 10, 15, or 20 minute sessions for home learning, tutoring, or daily practice.
One-time purchase. No ads or additional purchases.
Handwriting images, corrections, and the personal recognition model are processed and stored only on the device in use. Nothing is sent off-device.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
You can now write an App Store review anytime from Settings.
The developer, akira kawakami, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- akira kawakami
- Size
- 18.2 MB
- Category
- Education
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 AkkyApps
