# 1 Minute Mental Arithmetic vs drillio

The clearest difference is rating: 1 Minute Mental Arithmetic at 5.0 against drillio's 4.5. 1 Minute Mental Arithmetic also leads on in-app purchases (none vs 3) and review sentiment (100% vs 90%). drillio's advantage is update cadence (fortnightly vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. drillio sells 3 in-app purchases, starting at $1.99 per month. 1 Minute Mental Arithmetic asks for nothing beyond the download.

1 Minute Mental Arithmetic holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 31 and 8 respectively. Written reviews point the same way: 100% of 1 Minute Mental Arithmetic's written reviews are positive against 90% of drillio's.

1 Minute Mental Arithmetic ships an update every 6 weeks, drillio fortnightly. The most recent releases landed on September 21, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 1 Minute Mental Arithmetic | drillio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (31 ratings)](https://appshunter.io/ios/app/1-minute-mental-arithmetic/id1573246963/reviews)** | [4.5 (8 ratings)](https://appshunter.io/ios/app/drillio-mental-math-training/id6444734622/reviews) |
| Number of ratings | **31** | 8 |
| Positive reviews | **100.0% of reviews** | 90.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 87 MB | 33 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hirokazu Uno](https://appshunter.io/developer/1570016990) | [Ryo Iida](https://appshunter.io/developer/1506522991) |

## 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


### drillio

[App page](https://appshunter.io/ios/app/drillio-mental-math-training/id6444734622)

Enhance your calculation abilities with engaging mental math exercises. This app offers customizable practice cards for addition, subtraction, multiplication, and division, along with progress tracking to keep you motivated.

**Highlights:** Mental math cards for calculation techniques, Customizable practice modes, Progress tracking via stats tab, Engaging brain-boosting exercises, Covers addition, subtraction, multiplication, division

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| drillio PRO Monthly | $1.99 | per month |
| drillio PRO campaign | $14.99 | per year |
| drillio PRO Annual | $14.99 | per year |


## Frequently asked questions

### Is 1 Minute Mental Arithmetic free?

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

### Is drillio free?

drillio is free to download, with in-app purchases available.

### Which has better reviews, 1 Minute Mental Arithmetic or drillio?

1 Minute Mental Arithmetic is rated higher. 1 Minute Mental Arithmetic averages 5.0 out of 5 from 31 ratings, while drillio averages 4.5 from 8 ratings.

### Do 1 Minute Mental Arithmetic or drillio have ads?

Both 1 Minute Mental Arithmetic and drillio show ads.

### Which is updated more often, 1 Minute Mental Arithmetic or drillio?

1 Minute Mental Arithmetic ships an update every 6 weeks, and drillio fortnightly. Most recently, 1 Minute Mental Arithmetic was updated on September 21, 2026 and drillio on September 20, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*