DEPS Add & Subtract

Mental math games for kids

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

DEPS Add & Subtract turns addition and subtraction into a colorful adventure. Children don't just memorize answers — they learn the strategies that real mental math is built on, one playful world at a time. 8 WORLDS, 8 STRATEGIES • Ten Bridge – make a ten first, then add the rest (8 + 6 = 8 + 2 + 4) • Hundreds Castle – jump rows of ten and squares of one on the hundreds chart • Break & Build – add tens to tens and ones to ones with base-ten blocks • Kangaroo Jumps – hop along an empty number line • Missing Piece – solve subtraction by adding on, with story problems and bar models • Magic Adjust – use a friendly number and fix it, or keep the same difference • Trading Market – the written column method with trades, shown the way it is taught in your country • Estimation Arena – over or under, rounding, front-end estimates and Box Math LEARNS FROM MISTAKES Boss levels include an "Error Hunter": spot a friend's typical mistake (like 56 + 97 = 1413) and fix it. When your child makes one of these common mistakes, DEPS notices it and re-teaches the idea step by step with the strategy your child picked. MADE FOR EVERY CLASSROOM • Grades 1–6: difficulty adapts to your child's grade and speed • 8 languages: English, Turkish, Spanish, German, French, Portuguese, Arabic and Russian • Local math notation: decimal commas, Arabic-Indic digits, and the written subtraction method used in your country (borrowing or equal additions) FUN THAT BRINGS THEM BACK Stars, chests, a daily streak, a closet full of outfits for Deps, and a 60-second Speed Round with a weekly class leaderboard (nicknames only). FOR PARENTS AND TEACHERS • Detailed progress report by email: what your child can do, what needs practice and which misconceptions appeared • Follow code to see progress from another device • Daily play limit and parent PIN • No ads, no tracking, no account Activities are based on Chapter 11 of John A. Van de Walle's "Elementary and Middle School Mathematics: Teaching Developmentally". The first two levels of the first two worlds are free. A one-time purchase unlocks every level.

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New level maps! Every world now has its own painted landscape with a winding road, star milestones and a gate to the next world. The sky changes with your answers: keep going and the sun comes back with a rainbow.

Version 1.0.3

The developer, yusuf karaman, 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 Linked to You

    The following data may be collected and linked to your identity:

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    • Usage Data

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Accessibility

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Information

Seller
yusuf karaman
Size
6.5 MB
Category
Family
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.
Languages
English
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.
  • Learn More
  • In-App Controls
    Parental Controls
In-App Purchases
Yes
Copyright
© 2026 Yusuf Karaman
  • Developer Website
  • Privacy Policy

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