# Schedule4 vs Periop Pacemaker

The clearest difference is review sentiment: Periop Pacemaker at 100% against Schedule4's 0%. Periop Pacemaker also leads on rating (5.0 vs 4.3) and iOS requirement (13.0 vs 15.0). Schedule4's advantage is in-app purchases (none vs 2) and update cadence (every 9 days vs every 2 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Periop Pacemaker sells 2 in-app purchases, starting at $2.99 per year. Schedule4 asks for nothing beyond the download.

Periop Pacemaker holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 12 and 8 respectively. Written reviews point the same way: 0% of Schedule4's written reviews are positive against 100% of Periop Pacemaker's.

Schedule4 ships an update every 9 days, Periop Pacemaker every 2 months. The most recent releases landed on September 15, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Schedule4 | Periop Pacemaker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (12 ratings)](https://appshunter.io/ios/app/schedule4/id1438795757/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/periop-pacemaker/id6615070538/reviews)** |
| Number of ratings | **12** | 8 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 146 MB | 43 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Boston Medical Data LLC](https://appshunter.io/developer/1437675395) | [Rhythm Management, LLC](https://appshunter.io/developer/1761518402) |

## What reviewers say

### Schedule4

[App page](https://appshunter.io/ios/app/schedule4/id1438795757)

This medical app simplifies staff scheduling for anesthesia practices. It allows for easy creation of vacation, call, and daily schedules. Additional modules enhance communication and workflow.

**Highlights:** Staff scheduling, Vacation planning, Call schedule management, Daily schedule creation, Timesheet module, Expense tracking, Secured messaging

**Features:** Vision Pro support

**In-app purchases:** none


### Periop Pacemaker

[App page](https://appshunter.io/ios/app/periop-pacemaker/id6615070538)

This app provides medical professionals with a decision algorithm for managing surgical patients with implantable defibrillators or pacemakers. It is based on guidelines endorsed by the Heart Rhythm Society and updated annually by an expert committee.

**Highlights:** Decision algorithm for pacemaker/defibrillator management, Endorsed by Heart Rhythm Society, Based on ASA Perioperative Cardiac Implantable Electronic Device Management Aid, Annual expert committee updates, Designed for medical professionals

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PERIOP PACEMAKER ANNUAL FEE | $2.99 | per year |
| Periop Pacemaker | $7.99 | one-time |


## Frequently asked questions

### Is Schedule4 free?

Schedule4 is free to download, with no in-app purchases.

### Is Periop Pacemaker free?

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

### Which has better reviews, Schedule4 or Periop Pacemaker?

Periop Pacemaker is rated higher. Schedule4 averages 4.3 out of 5 from 12 ratings, while Periop Pacemaker averages 5.0 from 8 ratings.

### Do Schedule4 or Periop Pacemaker have ads?

Neither Schedule4 nor Periop Pacemaker shows ads.

### Which is updated more often, Schedule4 or Periop Pacemaker?

Schedule4 ships an update every 9 days, and Periop Pacemaker every 2 months. Most recently, Schedule4 was updated on September 15, 2026 and Periop Pacemaker on September 27, 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.*