# Bio vs そろばんノート

The clearest difference is in-app purchases: Bio at none against そろばんノート's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. そろばんノート sells 1 one-off in-app purchase. Bio asks for nothing beyond the download.

## The numbers

| Metric | Bio | そろばんノート |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | — |
| Monetization | — | Free with in-app purchases |
| Size | 40 MB | 4 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shun Okamoto](https://appshunter.io/developer/1838379045) | [SMART BIT K.K](https://appshunter.io/developer/1896559487) |

## What reviewers say

### Bio

[App page](https://appshunter.io/ios/app/bio/id6757346102)

**In-app purchases:** none


### そろばんノート

[App page](https://appshunter.io/ios/app/id6770438521)

Practice abacus, mental arithmetic, and calculation skills on your iPhone or iPad. Features a realistic abacus interface for various exercises, including addition, subtraction, multiplication, division, and flash calculations. Track your progress and review your performance over time.

**Highlights:** Realistic abacus interface, Practice addition, subtraction, multiplication, division, Flash and slip calculations, Customizable problem generation, Practice history and performance records, Adjustable settings for sound, vibration, and left-handed mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Proアンロック | $2.99 | one-time |


## Frequently asked questions

### Is Bio free?

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

### Is そろばんノート free?

そろばんノート is free to download, with in-app purchases available.

### Do Bio or そろばんノート have ads?

Neither Bio nor そろばんノート shows ads.

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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.*