# Amion vs Pacemaker

The clearest difference is rating: Amion at 4.4 against Pacemaker's 3.5. Amion also leads on ratings volume (5.6K vs 62). Pacemaker's advantage is update cadence (every 4 days vs every 3 weeks) and review sentiment (40% vs 24%). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Amion holds the better App Store score, 4.4 against 3.5. That said, the two scores are not equally well evidenced: Amion has 5.6K ratings behind it against 62, so its average is the more settled of the two. Written reviews complicate that: 24% of Amion's written reviews are positive against 40% of Pacemaker's, so the app with the better star average is not the one people write more warmly about.

Amion ships an update every 3 weeks, Pacemaker every 4 days. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Amion | Pacemaker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (5.6K ratings)](https://appshunter.io/ios/app/amion-clinician-scheduling/id481079171/reviews)** | [3.5 (62 ratings)](https://appshunter.io/ios/app/pacemaker-id/id1455009191/reviews) |
| Number of ratings | **5.6K** | 62 |
| Positive reviews | 24.3% of reviews | **40.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Ad-supported | **Free** |
| Size | 126 MB | 20 MB |
| Requires iOS | 26.0 | **11.1** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Doximity](https://appshunter.io/developer/391582379) | [THE UNSUNG LLC](https://appshunter.io/developer/1472090130) |

## What reviewers say

### Amion

[App page](https://appshunter.io/ios/app/amion-clinician-scheduling/id481079171)

Access and manage your on-call schedule from anywhere. Receive real-time alerts for changes, view shifts in a calendar format, and communicate securely with colleagues via HIPAA-compliant text messaging. Stay organized and connected with your team.

**Highlights:** On-call schedule access, Shift schedule alerts, Calendar view, HIPAA-secure text messaging, Group texting, Offline calendar access, Colleague schedule lookup

**Features:** Apple Watch app

**In-app purchases:** none


### Pacemaker

[App page](https://appshunter.io/ios/app/pacemaker-id/id1455009191)

This application uses advanced deep learning to identify the manufacturer of pacemakers and defibrillators from X-ray images. It currently supports major brands like Boston Scientific, Biotronik, Medtronic, and St. Jude.

**Highlights:** AI-powered device identification, X-ray image analysis, Pacemaker and defibrillator detection, Supports major manufacturers, Deep-learning model

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Amion free?

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

### Is Pacemaker free?

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

### Which has better reviews, Amion or Pacemaker?

Amion is rated higher. Amion averages 4.4 out of 5 from 5.6K ratings, while Pacemaker averages 3.5 from 62 ratings.

### Do Amion or Pacemaker have ads?

Neither Amion nor Pacemaker shows ads.

### Which is updated more often, Amion or Pacemaker?

Amion ships an update every 3 weeks, and Pacemaker every 4 days. Most recently, Amion was updated on October 22, 2026 and Pacemaker on October 24, 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.*