# drillio vs フラッシュ暗算+

The clearest difference is in-app purchases: フラッシュ暗算+ at none against drillio's 3. フラッシュ暗算+ also leads on ads (none vs shown). On price, 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. フラッシュ暗算+ asks for nothing beyond the download.

## The numbers

| Metric | drillio | フラッシュ暗算+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (8 ratings)](https://appshunter.io/ios/app/drillio-mental-math-training/id6444734622/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 90.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | — |
| Monetization | Free with in-app purchases | — |
| Size | 33 MB | 20 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ryo Iida](https://appshunter.io/developer/1506522991) | [otsuki hayato](https://appshunter.io/developer/1828600192) |

## What reviewers say

### 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 |


### フラッシュ暗算+

[App page](https://appshunter.io/ios/app/plus/id6767122915)

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

**In-app purchases:** none


## Frequently asked questions

### Is drillio free?

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

### Is フラッシュ暗算+ free?

フラッシュ暗算+ is free to download, with no in-app purchases.

### Do drillio or フラッシュ暗算+ have ads?

drillio shows ads; フラッシュ暗算+ does not.

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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.*