# Mental Math vs drillio

The clearest difference is in-app purchases: Mental Math at none against drillio's 3. Mental Math also leads on update cadence (every 6 days vs every 2 weeks) and iOS requirement (13.0 vs 16.0). drillio's advantage is review sentiment (90% vs 75%). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.5 for Mental Math against 4.5 for drillio. Both are backed by a comparable volume of ratings — 4 and 8 respectively. Written reviews are what separate them: 75% of Mental Math's written reviews are positive against 90% of drillio's.

Mental Math ships an update every 6 days, drillio every 2 weeks. The most recent releases landed on October 15, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Mental Math | drillio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (4 ratings)](https://appshunter.io/ios/app/mental-math-boost-cal-skills/id1572014520/reviews) | [4.5 (8 ratings)](https://appshunter.io/ios/app/drillio-flash-anzan-and-math/id6444734622/reviews) |
| Number of ratings | 4 | **8** |
| Positive reviews | 75.0% of reviews | **90.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 67 MB | 33 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yudai Kitano](https://appshunter.io/developer/1529380991) | [Ryo Iida](https://appshunter.io/developer/1506522991) |

## What reviewers say

### Mental Math

[App page](https://appshunter.io/ios/app/mental-math-boost-cal-skills/id1572014520)

Train your calculation skills with this app by solving math problems against the clock. Customize the time limit and number of questions for a personalized challenge. Review your results to track progress and improve your math abilities.

**Highlights:** Solve math problems against a time limit, Customize time limit and number of problems, Review calculation results, Simple and comfortable user interface, Gaming experience for spare time

**In-app purchases:** none


### drillio

[App page](https://appshunter.io/ios/app/drillio-flash-anzan-and-math/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 Mental Math free?

Mental Math 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, Mental Math or drillio?

Mental Math and drillio are both rated 4.5 out of 5 on the App Store, from 4 and 8 ratings respectively.

### Do Mental Math or drillio have ads?

Both Mental Math and drillio show ads.

### Which is updated more often, Mental Math or drillio?

Mental Math ships an update every 6 days, and drillio every 2 weeks. Most recently, Mental Math was updated on October 15, 2026 and drillio on October 27, 2026.

---

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