# SEER Simulator vs arrhythmia

The clearest difference is in-app purchases: SEER Simulator at none against arrhythmia's 3. arrhythmia's advantage is update cadence (every 3 weeks vs every 8 months) and chart position (#198 vs unranked). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. arrhythmia sells 3 in-app purchases, starting at $2.99 per month. SEER Simulator asks for nothing beyond the download.

SEER Simulator ships an update every 8 months, arrhythmia every 3 weeks. Both last shipped on October 26, 2026.

## The numbers

| Metric | SEER Simulator | arrhythmia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.1 (113 ratings)](https://appshunter.io/ios/app/arrhythmia/id996560473/reviews)** |
| Number of ratings | — | **113** |
| Positive reviews | — | 43.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | — | Subscription |
| Best chart rank | — | **#198** |
| Size | 10 MB | 159 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 17+ |
| Developer | [GETEMED Medizin- und Informationstechnik AG](https://appshunter.io/developer/674468119) | [Single Sail Software, LLC](https://appshunter.io/developer/359715495) |

## What reviewers say

### SEER Simulator

[App page](https://appshunter.io/ios/app/seer-simulator/id674508071)

**In-app purchases:** none


### arrhythmia

[App page](https://appshunter.io/ios/app/arrhythmia/id996560473)

**Currently charting:** #198 Top Grossing · Medical (US App Store)

Practice interpreting EKGs in lead II with realistic simulations. Choose rhythms to study or test your knowledge in a game mode. Ideal for healthcare professionals to hone their diagnostic skills.

**Highlights:** EKG interpretation practice, Lead II simulation, Study Mode with rhythm selection, Game Mode for random rhythm identification, Customizable rhythm sets, Realistic rhythm variations

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $19.99 | per year |
| Unlock All Rhythms (One-time Purchase) | $4.99 | one-time |

**What reviewers like**

- 👍 Great study tool for EKGs
- 👍 Helpful for understanding EKGs
- 👍 Good for practicing rhythm recognition
- 👍 Interactive and colorful design
- 👍 Dynamic testing

**What reviewers complain about**

- 👎 Immediately asks for paid version
- 👎 Missing common and important rhythms
- 👎 Rhythms are unrealistic
- 👎 Cannot try before signing up
- 👎 Clunky and slow horizontal scrolling

**Reported bugs**

- App no longer works after iOS update
- App does not work on Apple Watch

**Requested features**

- Add more common and important rhythms (torsades, WPW, STEMI, accelerated/tachycardic idioventricular, WAP, MAT)
- Option to read as a 12-lead instead of a single rhythm line
- Add variations to rhythms
- Add Left Bundle Branch Block
- Add a 12-lead option


## Frequently asked questions

### Is SEER Simulator free?

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

### Is arrhythmia free?

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

### Do SEER Simulator or arrhythmia have ads?

Neither SEER Simulator nor arrhythmia shows ads.

### Which is updated more often, SEER Simulator or arrhythmia?

SEER Simulator ships an update every 8 months, and arrhythmia every 3 weeks. Most recently, SEER Simulator was updated on October 26, 2026 and arrhythmia on October 26, 2026.

---

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