# Arithmetic Train your Brain vs DualSide

The clearest difference is in-app purchases: Arithmetic Train your Brain at none against DualSide's 1. Arithmetic Train your Brain also leads on update cadence (daily vs every 3 weeks) and iOS requirement (11.0 vs 15.6). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. DualSide sells 1 one-off in-app purchase. Arithmetic Train your Brain asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Arithmetic Train your Brain against 5.0 for DualSide. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Arithmetic Train your Brain ships an update daily, DualSide every 3 weeks. The most recent releases landed on September 23, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Arithmetic Train your Brain | DualSide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/arithmetic-train-your-brain/id6451027097/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/dualside/id6759185432/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Daily** | Every 3 weeks |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 64 MB | 65 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [minoru yamazaki](https://appshunter.io/developer/1449437588) | [Vikas Pawar](https://appshunter.io/developer/1588876306) |

## What reviewers say

### Arithmetic Train your Brain

[App page](https://appshunter.io/ios/app/arithmetic-train-your-brain/id6451027097)

Engage in daily brain training with arithmetic puzzles. Compete against your past performance to improve your calculation skills and stimulate your mind. Enjoy a progressive difficulty system and track your progress with a calendar feature.

**Highlights:** Daily brain training, Compete with past self, Progressive difficulty levels, Four arithmetic operations, Calendar progress tracking, Unlimited play

**Features:** macOS Compatibility

**In-app purchases:** none


### DualSide

[App page](https://appshunter.io/ios/app/dualside/id6759185432)

A fast-paced reaction game focused on timing and precision. Flip your paddle to match colors and keep the rally going. Compete with friends and climb global leaderboards in this skill-based, minimalist experience.

**Highlights:** One-tap paddle flipping, Endless rally gameplay, Global leaderboard competition, Head-to-head challenges, Seamless iCloud sync, Minimalist design

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Arithmetic Train your Brain free?

Arithmetic Train your Brain is free to download, with no in-app purchases.

### Is DualSide free?

DualSide is free to download, with in-app purchases available.

### Which has better reviews, Arithmetic Train your Brain or DualSide?

Arithmetic Train your Brain and DualSide are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Arithmetic Train your Brain or DualSide have ads?

Both Arithmetic Train your Brain and DualSide show ads.

### Which is updated more often, Arithmetic Train your Brain or DualSide?

Arithmetic Train your Brain ships an update daily, and DualSide every 3 weeks. Most recently, Arithmetic Train your Brain was updated on September 23, 2026 and DualSide on October 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*