# 1 Minute Mental Arithmetic vs uCertifyPrep InDesign CC 2020

The clearest difference is in-app purchases: 1 Minute Mental Arithmetic at none against uCertifyPrep InDesign CC 2020's 1. 1 Minute Mental Arithmetic also leads on update cadence (every 6 weeks vs every 10 months). uCertifyPrep InDesign CC 2020'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 InDesign CC 2020 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 InDesign CC 2020 every 10 months. The most recent releases landed on October 24, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | 1 Minute Mental Arithmetic | uCertifyPrep InDesign CC 2020 |
| --- | --- | --- |
| 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 10 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 InDesign CC 2020

[App page](https://appshunter.io/ios/app/ucertifyprep-indesign-cc-2020/id1665517126)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| uCertifyPrep InDesign CC 2020 | $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 InDesign CC 2020 free?

uCertifyPrep InDesign CC 2020 is free to download, with in-app purchases available.

### Do 1 Minute Mental Arithmetic or uCertifyPrep InDesign CC 2020 have ads?

1 Minute Mental Arithmetic shows ads; uCertifyPrep InDesign CC 2020 does not.

### Which is updated more often, 1 Minute Mental Arithmetic or uCertifyPrep InDesign CC 2020?

1 Minute Mental Arithmetic ships an update every 6 weeks, and uCertifyPrep InDesign CC 2020 every 10 months. Most recently, 1 Minute Mental Arithmetic was updated on October 24, 2026 and uCertifyPrep InDesign CC 2020 on October 4, 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.*