# Flash mental calculation vs weBooks +

The clearest difference is in-app purchases: weBooks + at none against Flash mental calculation's 1. weBooks + also leads on ads (none vs shown) and iOS requirement (8.0 vs 15.6). On price and device support there is nothing between them.

Both are free to download. Flash mental calculation sells 1 one-off in-app purchase. weBooks + asks for nothing beyond the download.

## The numbers

| Metric | Flash mental calculation | weBooks + |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/flash-mental-calculation/id1224937523/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 25 MB |
| Requires iOS | 15.6 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [kenji kiuchi](https://appshunter.io/developer/553473005) | [WENet Inc.](https://appshunter.io/developer/631073506) |

## What reviewers say

### Flash mental calculation

[App page](https://appshunter.io/ios/app/flash-mental-calculation/id1224937523)

Practice mental arithmetic with this educational app. Review your calculation process, and easily re-challenge mistaken problems from your past logs. Upgrade to save more calculation history.

**Highlights:** Practice flash mental arithmetic, Review calculation process, Rechallenge mistaken problems, Save past calculation logs, Log history saved after purchase

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove AD & All function Release. | $9.99 | one-time |


### weBooks +

[App page](https://appshunter.io/ios/app/webooks-plus/id1504826771)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flash mental calculation free?

Flash mental calculation is free to download, with in-app purchases available.

### Is weBooks + free?

weBooks + is free to download, with no in-app purchases.

### Do Flash mental calculation or weBooks + have ads?

Flash mental calculation shows ads; weBooks + does not.

---

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