# DEPS Add & Subtract — Mental math games for kids

> Mental math games for kids (iPhone/iPad app by yusuf karaman.)

- Source: https://appshunter.io/ios/app/deps-add-and-subtract/id6815765210 (this page in markdown: same URL + `.md`)
- Developer: [yusuf karaman](https://appshunter.io/developer/6812899710)
- Category: Games, Education, Family, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 4 MB
- Languages: American English
- Released: 2026-09-30
- Data updated: 2026-10-02

## What is DEPS Add & Subtract?

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.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full Access | $19.99 | one-time |


## Is DEPS Add & Subtract safe?

Not enough ratings yet to assess DEPS Add & Subtract.

## Is DEPS Add & Subtract legit?

DEPS Add & Subtract has limited verification signals. The AppsHunter Legitimacy Score for DEPS Add & Subtract is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.0.1 — 2026-10-01

Improved reliability of the Full Access purchase and Restore Purchases.

### 1.0 — 2026-09-30

No release notes.

## More apps by yusuf karaman

- [dephMath](https://appshunter.io/ios/app/dephmath/id6816063782)

All apps by yusuf karaman: https://appshunter.io/developer/6812899710

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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 2026-10-02.*