# RhythmRx vs ECG Builder

RhythmRx and ECG Builder are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. RhythmRx sells 2 in-app purchases, starting at $3.99 per month and ECG Builder sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | RhythmRx | ECG Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/rhythmrx-ekg-rhythm-practice/id6797304251/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 58 MB | 9 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 17+ |
| Developer | [GLP-1 Marketing Solutions LLC](https://appshunter.io/developer/6783423386) | [Mark Daniel Figueroa](https://appshunter.io/developer/1890265406) |

## What reviewers say

### RhythmRx

[App page](https://appshunter.io/ios/app/rhythmrx-ekg-rhythm-practice/id6797304251)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RhythmRX Plus - Monthly | $3.99 | per month |
| RhythmRx Plus - Lifetime | $24.99 | one-time |


### ECG Builder

[App page](https://appshunter.io/ios/app/ecg-builder/id6809634568)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ECG Builder Pro | $24.99 | one-time |


## Frequently asked questions

### Is RhythmRx free?

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

### Is ECG Builder free?

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

### Do RhythmRx or ECG Builder have ads?

Neither RhythmRx nor ECG Builder shows ads.

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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.*