# 1s Speed Math vs Chess CT

The clearest difference is rating: Chess CT at 5.0 against 1s Speed Math's 2.0. Chess CT also leads on update cadence (every 4 months vs every 9 months). 1s Speed Math's advantage is iOS requirement (12.0 vs 14.5). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Chess CT holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

1s Speed Math ships an update every 9 months, Chess CT every 4 months. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | 1s Speed Math | Chess CT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (2 ratings)](https://appshunter.io/ios/app/1s-speed-math/id870766493/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chess-ct/id6501961446/reviews)** |
| Number of ratings | **2** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 14 MB | 4 MB |
| Requires iOS | **12.0** | 14.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Atoapps](https://appshunter.io/developer/526385913) | [Igor Patrikeev](https://appshunter.io/developer/1717119256) |

## What reviewers say

### 1s Speed Math

[App page](https://appshunter.io/ios/app/1s-speed-math/id870766493)

Test your mental math skills with this fast-paced game. You have only one second to select the correct answer to reach a high score and challenge your friends. It's a quick and engaging way to improve your arithmetic abilities.

**Highlights:** One-second answer time, High score tracking, Challenge friends, Improve arithmetic skills, Quick gameplay

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

**In-app purchases:** none


### Chess CT

[App page](https://appshunter.io/ios/app/chess-ct/id6501961446)

This logic puzzle game challenges players to rotate a cube and match numbers on all sides. It offers multiple levels and versions for different age groups, including a free 5x5 version and a version for young children learning numbers.

**Highlights:** Multi-level rotational puzzle, Match numbers at all angles, Cube rotation gameplay, Versions for different age groups, Introduces numbers in multiple languages

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 1s Speed Math free?

1s Speed Math is free to download, with no in-app purchases.

### Is Chess CT free?

Chess CT is free to download, with no in-app purchases.

### Which has better reviews, 1s Speed Math or Chess CT?

Chess CT is rated higher. 1s Speed Math averages 2.0 out of 5 from 2 ratings, while Chess CT averages 5.0 from 1 ratings.

### Do 1s Speed Math or Chess CT have ads?

Neither 1s Speed Math nor Chess CT shows ads.

### Which is updated more often, 1s Speed Math or Chess CT?

1s Speed Math ships an update every 9 months, and Chess CT every 4 months. Most recently, 1s Speed Math was updated on October 9, 2026 and Chess CT on October 2, 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.*