# 1s Speed Math vs Number Master

The clearest difference is update cadence: Number Master at every 2 weeks against 1s Speed Math's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.

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

1s Speed Math ships an update every 9 months, Number Master every 2 weeks. The most recent releases landed on October 22, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 1s Speed Math | Number Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (2 ratings)](https://appshunter.io/ios/app/1s-speed-math/id870766493/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 14 MB | 63 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Atoapps](https://appshunter.io/developer/526385913) | [Nguyen Pham Tuan Hoang](https://appshunter.io/developer/1722632422) |

## 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


### Number Master

[App page](https://appshunter.io/ios/app/number-master-brain-training/id6753109959)

**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 Number Master free?

Number Master is free to download, with no in-app purchases.

### Do 1s Speed Math or Number Master have ads?

Neither 1s Speed Math nor Number Master shows ads.

### Which is updated more often, 1s Speed Math or Number Master?

1s Speed Math ships an update every 9 months, and Number Master every 2 weeks. Most recently, 1s Speed Math was updated on October 22, 2026 and Number Master on October 14, 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.*