# Heart Simulator vs Speed reading

The clearest difference is price: Speed reading at Free against Heart Simulator's $2.99. Speed reading also leads on rating (4.7 vs 2.3) and update cadence (every 5 weeks vs every 10 months). Heart Simulator's advantage is in-app purchases (none vs 3) and review sentiment (33% vs 25%). On ads and device support there is nothing between them.

Speed reading is free to download; Heart Simulator costs $2.99 up front. Speed reading sells 3 in-app purchases, starting at $3.99 per month. Heart Simulator asks for nothing beyond the download.

Speed reading holds the better App Store score, 4.7 against 2.3. That said, the two scores are not equally well evidenced: Speed reading has 143 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 33% of Heart Simulator's written reviews are positive against 25% of Speed reading's, so the app with the better star average is not the one people write more warmly about.

Heart Simulator ships an update every 10 months, Speed reading every 5 weeks. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Heart Simulator | Speed reading |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/heart-simulator/id1575071257/reviews) | **[4.7 (143 ratings)](https://appshunter.io/ios/app/speed-reading-reader/id6451441419/reviews)** |
| Number of ratings | 3 | **143** |
| Positive reviews | **33.3% of reviews** | 25.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 5 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 124 MB | 55 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Epicardio Ltd](https://appshunter.io/developer/1343825584) | [Alican Efe](https://appshunter.io/developer/1693988285) |

## What reviewers say

### Heart Simulator

[App page](https://appshunter.io/ios/app/heart-simulator/id1575071257)

Explore the electrical function of the heart with an interactive 3D simulator. This tool aids medical and nursing students in understanding ECGs and cardiac rhythm through realistic simulations and detailed anatomical views.

**Highlights:** Interactive 3D heart exploration, Real-time ECG display (1-lead and 12-lead), Electrophysiology parameter control, ECG caliper tool, Simulation speed control, Anatomy views with 3D camera control

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

**In-app purchases:** none


### Speed reading

[App page](https://appshunter.io/ios/app/speed-reading-reader/id6451441419)

Enhance your reading speed and comprehension with targeted exercises and a specialized reader for PDF and EPUB files. Improve focus, expand your visual angle, and track your progress over 30 days to read books faster and more effectively.

**Highlights:** Speed reading and concentration exercises, Reading accelerator for PDF/EPUB, 30-day speed reading course, Eye muscle and vision angle exercises, EPUB and PDF reader, Progress statistics, Spritz and Bionic reading modes

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Premium | $3.99 | per month |
| 3 Month Premium | $6.99 | per 3 months |
| 1 Year Premium | $17.99 | per year |


## Frequently asked questions

### Is Heart Simulator free?

Heart Simulator costs $2.99, with no in-app purchases.

### Is Speed reading free?

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

### Which has better reviews, Heart Simulator or Speed reading?

Speed reading is rated higher. Heart Simulator averages 2.3 out of 5 from 3 ratings, while Speed reading averages 4.7 from 143 ratings.

### Do Heart Simulator or Speed reading have ads?

Neither Heart Simulator nor Speed reading shows ads.

### Which is updated more often, Heart Simulator or Speed reading?

Heart Simulator ships an update every 10 months, and Speed reading every 5 weeks. Most recently, Heart Simulator was updated on October 15, 2026 and Speed reading on October 7, 2026.

---

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