# ECGStudio vs 心電図ドリル

The clearest difference is in-app purchases: ECGStudio at none against 心電図ドリル's 1. 心電図ドリル's advantage is update cadence (monthly vs every 3 months) and iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. 心電図ドリル sells 1 one-off in-app purchase. ECGStudio asks for nothing beyond the download.

ECGStudio ships an update every 3 months, 心電図ドリル monthly. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ECGStudio | 心電図ドリル |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Size | 9 MB | 5 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [Keisuke Nakashima](https://appshunter.io/developer/1691259083) | [RAINBOW TREE LLC](https://appshunter.io/developer/1619997282) |

## What reviewers say

### ECGStudio

[App page](https://appshunter.io/ios/app/ecgstudio-ecg-draw-and-lecture/id6761598719)

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

**In-app purchases:** none


### 心電図ドリル

[App page](https://appshunter.io/ios/app/12/id6801799404)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shindenzu Pro | $9.99 | one-time |


## Frequently asked questions

### Is ECGStudio free?

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

### Is 心電図ドリル free?

心電図ドリル is free to download, with in-app purchases available.

### Do ECGStudio or 心電図ドリル have ads?

Neither ECGStudio nor 心電図ドリル shows ads.

### Which is updated more often, ECGStudio or 心電図ドリル?

ECGStudio ships an update every 3 months, and 心電図ドリル monthly. Most recently, ECGStudio was updated on October 30, 2026 and 心電図ドリル on October 25, 2026.

---

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