Plus & Minus - Write by Hand
Addition & subtraction to 20
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Practice addition and subtraction within 20 by writing the answers by hand. No ads, no sign-in — everything stays on the device.
Plus & Minus is a practice app for children learning addition and subtraction within 20 by writing the answers by hand.
HOW IT WORKS
• Make a number / Take away — pick a number from 5 to 19 and solve problems like 3 + □ = 5 and 5 − □ = 2. The blank moves around, so children practice number bonds, not just answers.
• Mixed practice — ordinary sums like 2 + 3 = □ with numbers mixed from 5–9, 10–19 or 5–19.
• Write the answer in the box with a finger or Apple Pencil. The app reads the handwriting right away and checks it.
• Switch between horizontal and vertical (column) layout with one button.
• If the app can't read the writing, the box turns yellow so your child can try again.
• On first launch, a short guide shows how to write in the answer box.
• Fits iPhone, iPad and the unfolded iPhone Duo screen.
HISTORY AND STATS
• Every session is saved on the device, handwriting included, so you can replay past practice.
• Stats show which numbers and which positions need more practice.
SAFE FOR KIDS
• No ads, no accounts, no subscriptions.
• Everything, including handwriting recognition, happens on the device. The app sends nothing to us.
• Buying, outside links, erasing history and changing how long it is kept are behind a grown-ups check.
FREE AND ONE-TIME PURCHASE
• Make a number 5–9, Mixed practice 5–9, the history and the stats are free.
• A one-time purchase unlocks numbers 10–19, Mixed practice 10–19 and 5–19, and the 20-problem test. Family Sharing is supported.
• Purchases are saved on the device and stay unlocked without internet.
Questions: support@innomote.com
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Innomote LLC, 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
- Innomote LLC
- Size
- 19.2 MB
- Category
- Education
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English and Korean
- Age Rating
4+
- 4+
- Made for Ages 6–8
This app is rated 4+ with content restrictions.
Some content may be rated higher, and may therefore be restricted and managed by the developer through in-app controls. - In-App Controls
Parental Controls
- In-App Purchases
Yes
- Unlock 10–19 and the test $1.99
- Copyright
- © 2026 Innomote LLC

