# そろばん学習ドリル Ext vs FlagOdyssey

そろばん学習ドリル Ext and FlagOdyssey are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | そろばん学習ドリル Ext | FlagOdyssey |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Monetization | Free | — |
| Size | 24 MB | 61 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ryo itou](https://appshunter.io/developer/1435019729) | [koichi kodama](https://appshunter.io/developer/1679265192) |

## What reviewers say

### そろばん学習ドリル Ext

[App page](https://appshunter.io/ios/app/ext/id1449114393)

This app offers four courses to help beginners learn abacus calculation. It includes exercises for placing numbers, simple addition, addition of ten numbers, and auditory addition. Progress is tracked, and difficulty increases with proficiency.

**Highlights:** Placing numbers on the abacus, Two-digit addition practice, Addition of ten numbers, Auditory addition exercises, Progress tracking, Adaptive difficulty levels

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

**In-app purchases:** none


### FlagOdyssey

[App page](https://appshunter.io/ios/app/flagodyssey/id6448718172)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is そろばん学習ドリル Ext free?

そろばん学習ドリル Ext is free to download, with no in-app purchases.

### Is FlagOdyssey free?

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

### Do そろばん学習ドリル Ext or FlagOdyssey have ads?

Neither そろばん学習ドリル Ext nor FlagOdyssey 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.*