# 1 Minute Mental Arithmetic vs uCertifyPrep Systems Security

The clearest difference is in-app purchases: 1 Minute Mental Arithmetic at none against uCertifyPrep Systems Security's 1. 1 Minute Mental Arithmetic also leads on update cadence (every 6 weeks vs every 7 months). uCertifyPrep Systems Security's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. uCertifyPrep Systems Security sells 1 one-off in-app purchase. 1 Minute Mental Arithmetic asks for nothing beyond the download.

1 Minute Mental Arithmetic ships an update every 6 weeks, uCertifyPrep Systems Security every 7 months. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 1 Minute Mental Arithmetic | uCertifyPrep Systems Security |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (32 ratings)](https://appshunter.io/ios/app/1-minute-mental-arithmetic/id1573246963/reviews)** | — |
| Number of ratings | **32** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 7 months |
| Monetization | Ad-supported | — |
| Size | 87 MB | 121 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hirokazu Uno](https://appshunter.io/developer/1570016990) | [uCertify.com](https://appshunter.io/developer/1130631061) |

## What reviewers say

### 1 Minute Mental Arithmetic

[App page](https://appshunter.io/ios/app/1-minute-mental-arithmetic/id1573246963)

Practice mental arithmetic for one minute daily to sharpen your cognitive skills. This app is also designed to assist children in learning basic calculations and improving their math abilities.

**Highlights:** Daily 1-minute mental arithmetic practice, Brain training exercises, Assists children in learning calculations, Improves cognitive skills, Simple and focused interface

**In-app purchases:** none


### uCertifyPrep Systems Security

[App page](https://appshunter.io/ios/app/ucertifyprep-systems-security/id1613504431)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| uCertifyPrep Systems Security | $49.99 | one-time |


## Frequently asked questions

### Is 1 Minute Mental Arithmetic free?

1 Minute Mental Arithmetic is free to download, with no in-app purchases.

### Is uCertifyPrep Systems Security free?

uCertifyPrep Systems Security is free to download, with in-app purchases available.

### Do 1 Minute Mental Arithmetic or uCertifyPrep Systems Security have ads?

1 Minute Mental Arithmetic shows ads; uCertifyPrep Systems Security does not.

### Which is updated more often, 1 Minute Mental Arithmetic or uCertifyPrep Systems Security?

1 Minute Mental Arithmetic ships an update every 6 weeks, and uCertifyPrep Systems Security every 7 months. Most recently, 1 Minute Mental Arithmetic was updated on October 24, 2026 and uCertifyPrep Systems Security on October 13, 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.*