# Krok vs ECG Trainer

Krok and ECG Trainer both sit at 1.0 stars, but that hides the real split: 57% of Krok's written reviews are positive against 0% of ECG Trainer's. Krok also leads on iOS requirement (16.0 vs 18.0). ECG Trainer's advantage is monetization model (free vs free with in-app purchases). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Krok sells 3 in-app purchases, starting at $1.99 per month and ECG Trainer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 1.0 for Krok against 1.0 for ECG Trainer. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 57% of Krok's written reviews are positive against 0% of ECG Trainer's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Krok | ECG Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/krok-testing/id6469338819/reviews) | [1.0 (1 ratings)](https://appshunter.io/ios/app/ecg-trainer/id6760586769/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | **57.1% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 24 MB | 39 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Anatoly Sorochan](https://appshunter.io/developer/972443742) | [Oleksandr Galaguta](https://appshunter.io/developer/1885178132) |

## What reviewers say

### Krok

[App page](https://appshunter.io/ios/app/krok-testing/id6469338819)

Prepare for KROK exams with a comprehensive testing application. Access a vast library of questions across various categories and topics to enhance your knowledge. Track your progress with interactive tests and assess your understanding effectively.

**Highlights:** Wide selection of KROK exam tests, Large number of questions, Category and topic selection, Interactive tests, Progress tracking, Knowledge assessment

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $1.99 | per month |
| 3 months | $4.99 | per 3 months |
| 6 months | $7.99 | per 6 months |


### ECG Trainer

[App page](https://appshunter.io/ios/app/ecg-trainer/id6760586769)

This app offers an interactive way to practice recognizing ECG patterns using real cardiograms. It provides diagnostic criteria and flexible training settings to help users master ECG interpretation for educational purposes.

**Highlights:** Real ECG examples, Diagnostic criteria explanations, Accessible pathology descriptions, Flexible training configurations, Focus on ECG signs

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $1.99 | one-time |


## Frequently asked questions

### Is Krok free?

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

### Is ECG Trainer free?

ECG Trainer is free to download, with in-app purchases available.

### Which has better reviews, Krok or ECG Trainer?

Krok and ECG Trainer are both rated 1.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Krok or ECG Trainer have ads?

Neither Krok nor ECG Trainer shows ads.

### Which is updated more often, Krok or ECG Trainer?

Krok ships an update every 3 weeks, and ECG Trainer every 3 weeks. Most recently, Krok was updated on September 23, 2026 and ECG Trainer on September 22, 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.*