# Abacus Lesson vs AR Volt Meter

The clearest difference is in-app purchases: AR Volt Meter at none against Abacus Lesson's 3. AR Volt Meter also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Abacus Lesson sells 3 one-off in-app purchases. AR Volt Meter asks for nothing beyond the download.

## The numbers

| Metric | Abacus Lesson | AR Volt Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/abacus-lesson-division/id1593317741/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | — |
| Monetization | Free with in-app purchases | — |
| Size | 132 MB | 77 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hirokazu Komatsu](https://appshunter.io/developer/1523833531) | [ATSUSHI INAGAKI](https://appshunter.io/developer/1670043302) |

## What reviewers say

### Abacus Lesson

[App page](https://appshunter.io/ios/app/abacus-lesson-division/id1593317741)

Learn the simple and fast method of division using an abacus. This app focuses on developing mental calculation skills by leveraging the abacus technique. It's recommended to master addition, subtraction, and multiplication with an abacus first.

**Highlights:** Learn abacus division techniques, Develop mental calculation skills, Focus on Soroban method, Step-by-step division instruction, Builds on addition, subtraction, multiplication

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation Lv1 for hiding Ad | $1.99 | one-time |
| Donation Lv2 for hiding Ad | $3.99 | one-time |
| Donation Lv3 for hiding Ad | $8.99 | one-time |


### AR Volt Meter

[App page](https://appshunter.io/ios/app/ar-volt-meter/id1670043300)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Abacus Lesson free?

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

### Is AR Volt Meter free?

AR Volt Meter is free to download, with no in-app purchases.

### Do Abacus Lesson or AR Volt Meter have ads?

Abacus Lesson shows ads; AR Volt Meter 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.*