# CPRタイマー vs 心電図ドリル

The clearest difference is in-app purchases: CPRタイマー at none against 心電図ドリル's 1. CPRタイマー also leads on update cadence (every 6 days vs monthly) and iOS requirement (15.0 vs 17.0). 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. CPRタイマー asks for nothing beyond the download.

CPRタイマー ships an update every 6 days, 心電図ドリル monthly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | CPRタイマー | 心電図ドリル |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Monthly |
| Monetization | Free | — |
| Size | 2 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [Code Blue Co.,Ltd.](https://appshunter.io/developer/1888422110) | [RAINBOW TREE LLC](https://appshunter.io/developer/1619997282) |

## What reviewers say

### CPRタイマー

[App page](https://appshunter.io/ios/app/cpr/id6761255488)

This app provides a simulation tool for emergency response training, including timers for rhythm checks and countdowns with voice announcements. It also features a compression ratio calculator and a metronome to aid in practice.

**Highlights:** Rhythm check timer (2 minutes), Voice-guided countdown, Chest compression ratio calculator, Metronome (100-120 BPM), Timestamped progress log

**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 CPRタイマー free?

CPRタイマー 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 CPRタイマー or 心電図ドリル have ads?

Neither CPRタイマー nor 心電図ドリル shows ads.

### Which is updated more often, CPRタイマー or 心電図ドリル?

CPRタイマー ships an update every 6 days, and 心電図ドリル monthly. Most recently, CPRタイマー was updated on October 24, 2026 and 心電図ドリル on October 25, 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.*