# Number Boom Demo! vs Four Seconds

The clearest difference is update cadence: Number Boom Demo! at every 6 months against Four Seconds's every 22 months. On price, review sentiment, 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.

Number Boom Demo! ships an update every 6 months, Four Seconds every 22 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Number Boom Demo! | Four Seconds |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (7 ratings)](https://appshunter.io/ios/app/four-seconds/id1280965840/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 22 months |
| Monetization | Free | Free |
| Size | 14 MB | 24 MB |
| Requires iOS | 10.0 | 10.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pavel Kremliakov](https://appshunter.io/developer/728734154) | [Andrei Antonescu](https://appshunter.io/developer/1126352058) |

## What reviewers say

### Number Boom Demo!

[App page](https://appshunter.io/ios/app/number-boom-demo/id731924461)

Test your math skills by solving equations before time runs out. This game offers brain exercises and an endless mode to challenge your calculation speed and accuracy.

**Highlights:** Math skill training, Timed equation solving, Brain exercises, Endless mode, Single difficulty level

**Features:** macOS Compatibility

**In-app purchases:** none


### Four Seconds

[App page](https://appshunter.io/ios/app/four-seconds/id1280965840)

Test your timing by stopping a timer at precisely four seconds. Compete with others on the leaderboard to see who has the best precision. It's a simple yet challenging game of skill.

**Highlights:** Precise timer stopping, Four-second challenge, Global leaderboard, Simple gameplay

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

**In-app purchases:** none


## Frequently asked questions

### Is Number Boom Demo! free?

Number Boom Demo! is free to download, with no in-app purchases.

### Is Four Seconds free?

Four Seconds is free to download, with no in-app purchases.

### Do Number Boom Demo! or Four Seconds have ads?

Neither Number Boom Demo! nor Four Seconds shows ads.

### Which is updated more often, Number Boom Demo! or Four Seconds?

Number Boom Demo! ships an update every 6 months, and Four Seconds every 22 months. Most recently, Number Boom Demo! was updated on November 1, 2026 and Four Seconds on November 3, 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.*