# Abacus Lesson vs 心電図ナビ｜看護師のための不整脈・モニター波形の読み方

The clearest difference is ads: 心電図ナビ｜看護師のための不整脈・モニター波形の読み方 at none against Abacus Lesson's shown. Abacus Lesson's advantage is iOS requirement (11.0 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Abacus Lesson sells 3 one-off in-app purchases and 心電図ナビ｜看護師のための不整脈・モニター波形の読み方 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Abacus Lesson ships an update every 2 weeks, 心電図ナビ｜看護師のための不整脈・モニター波形の読み方 fortnightly. The most recent releases landed on November 7, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Abacus Lesson | 心電図ナビ｜看護師のための不整脈・モニター波形の読み方 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (15 ratings)](https://appshunter.io/ios/app/abacus-lesson-multiplication/id1582635868/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 138 MB | 4 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Hirokazu Komatsu](https://appshunter.io/developer/1523833531) | [Takahiro Ito](https://appshunter.io/developer/6787806782) |

## What reviewers say

### Abacus Lesson

[App page](https://appshunter.io/ios/app/abacus-lesson-multiplication/id1582635868)

Learn multiplication using a virtual abacus. This app teaches a simple and fast method for calculating multiplication, emphasizing the mental calculation benefits of the abacus over digital calculators.

**Highlights:** Virtual abacus for multiplication, Simple and fast calculation methods, Focus on mental calculation skills, Step-by-step multiplication lessons, Suitable for beginners

**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 |


### 心電図ナビ｜看護師のための不整脈・モニター波形の読み方

[App page](https://appshunter.io/ios/app/id6802314816)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| フル版（全波形解放） | $6.99 | one-time |


## Frequently asked questions

### Is Abacus Lesson free?

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

### Is 心電図ナビ｜看護師のための不整脈・モニター波形の読み方 free?

心電図ナビ｜看護師のための不整脈・モニター波形の読み方 is free to download, with in-app purchases available.

### Do Abacus Lesson or 心電図ナビ｜看護師のための不整脈・モニター波形の読み方 have ads?

Abacus Lesson shows ads; 心電図ナビ｜看護師のための不整脈・モニター波形の読み方 does not.

### Which is updated more often, Abacus Lesson or 心電図ナビ｜看護師のための不整脈・モニター波形の読み方?

Abacus Lesson ships an update every 2 weeks, and 心電図ナビ｜看護師のための不整脈・モニター波形の読み方 fortnightly. Most recently, Abacus Lesson was updated on November 7, 2026 and 心電図ナビ｜看護師のための不整脈・モニター波形の読み方 on November 6, 2026.

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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.*