# AnestAssist PK/PD vs Periop Pacemaker

AnestAssist PK/PD and Periop Pacemaker both sit at 5.0 stars, but that hides the real split: 100% of Periop Pacemaker's written reviews are positive against 50% of AnestAssist PK/PD's. Periop Pacemaker also leads on price (Free vs $4.99) and ratings volume (8 vs 1). AnestAssist PK/PD's advantage is in-app purchases (none vs 2) and iOS requirement (7.0 vs 13.0). On rating, update cadence, ads and device support there is nothing between them.

Periop Pacemaker is free to download; AnestAssist PK/PD costs $4.99 up front. Periop Pacemaker sells 2 in-app purchases, starting at $2.99 per year. AnestAssist PK/PD asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for AnestAssist PK/PD against 5.0 for Periop Pacemaker. That said, the two scores are not equally well evidenced: Periop Pacemaker has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 50% of AnestAssist PK/PD's written reviews are positive against 100% of Periop Pacemaker's.

AnestAssist PK/PD ships an update monthly, Periop Pacemaker every 2 months. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | AnestAssist PK/PD | Periop Pacemaker |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/anestassist-pkpd/id325438803/reviews) | [5.0 (8 ratings)](https://appshunter.io/ios/app/periop-pacemaker/id6615070538/reviews) |
| Number of ratings | 1 | **8** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 4 MB | 43 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Palma Healthcare Systems LLC](https://appshunter.io/developer/325438806) | [Rhythm Management, LLC](https://appshunter.io/developer/1761518402) |

## What reviewers say

### AnestAssist PK/PD

[App page](https://appshunter.io/ios/app/anestassist-pkpd/id325438803)

This educational tool visualizes the pharmacokinetics, pharmacodynamics, and interactions of anesthetic drugs. It uses mathematical models to estimate and chart drug concentrations and effects, aiding in rational dosing strategies for various patient types. Users can save and review real-time or retrospective cases.

**Highlights:** Pharmacokinetic and pharmacodynamic visualization, Drug interaction modeling, Patient-specific dosing strategies, Real-time case capture, Case library for review and demonstration, Customizable drug and model parameters

**Features:** macOS Compatibility, 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 AnestAssist PK/PD free?

AnestAssist PK/PD costs $4.99, with no in-app purchases.

### Is Periop Pacemaker free?

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

### Which has better reviews, AnestAssist PK/PD or Periop Pacemaker?

AnestAssist PK/PD and Periop Pacemaker are both rated 5.0 out of 5 on the App Store, from 1 and 8 ratings respectively.

### Do AnestAssist PK/PD or Periop Pacemaker have ads?

Neither AnestAssist PK/PD nor Periop Pacemaker shows ads.

### Which is updated more often, AnestAssist PK/PD or Periop Pacemaker?

AnestAssist PK/PD ships an update monthly, and Periop Pacemaker every 2 months. Most recently, AnestAssist PK/PD was updated on October 29, 2026 and Periop Pacemaker on October 25, 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.*