# E vs DS Heart Rate

The clearest difference is in-app purchases: E at none against DS Heart Rate's 1. E also leads on update cadence (every 5 weeks vs every 85 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. DS Heart Rate sells 1 one-off in-app purchase. E asks for nothing beyond the download.

E ships an update every 5 weeks, DS Heart Rate every 85 months. Both last shipped on October 29, 2026.

## The numbers

| Metric | E | DS Heart Rate |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 85 months |
| Size | 61 MB | 3 MB |
| Requires iOS | **10.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Henan Huaxia Esti Biotech Co.,Ltd.](https://appshunter.io/developer/1231976572) | [思迪 李](https://appshunter.io/developer/1448600251) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-cardiac/id1129710846)

**In-app purchases:** none


### DS Heart Rate

[App page](https://appshunter.io/ios/app/ds-heart-rate-pulse-tracker/id1450171413)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $1.99 | one-time |


## Frequently asked questions

### Is E free?

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

### Is DS Heart Rate free?

DS Heart Rate is free to download, with in-app purchases available.

### Do E or DS Heart Rate have ads?

Neither E nor DS Heart Rate shows ads.

### Which is updated more often, E or DS Heart Rate?

E ships an update every 5 weeks, and DS Heart Rate every 85 months. Most recently, E was updated on October 29, 2026 and DS Heart Rate on October 29, 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.*