# QS/1 Message Center vs PK 3

The clearest difference is update cadence: QS/1 Message Center at every 3 weeks against PK 3's every 2 months. 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.

QS/1 Message Center ships an update every 3 weeks, PK 3 every 2 months. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | QS/1 Message Center | PK 3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pk-3/id1629504663/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | — | Free |
| Size | 48 MB | 3 MB |
| Requires iOS | **10.0** | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [RedSail Technologies, LLC](https://appshunter.io/developer/1515336618) | [MedKeeper LLC](https://appshunter.io/developer/525928594) |

## What reviewers say

### QS/1 Message Center

[App page](https://appshunter.io/ios/app/qs1-message-center/id1344865921)

**Features:** macOS Compatibility

**In-app purchases:** none


### PK 3

[App page](https://appshunter.io/ios/app/pk-3/id1629504663)

This app streamlines pharmacy operations by enhancing key processes. It is designed to improve efficiency and workflow within a pharmacy setting.

**Highlights:** Improves key operational processes, Enhances pharmacy workflow, Streamlines operations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is QS/1 Message Center free?

QS/1 Message Center is free to download, with no in-app purchases.

### Is PK 3 free?

PK 3 is free to download, with no in-app purchases.

### Do QS/1 Message Center or PK 3 have ads?

Neither QS/1 Message Center nor PK 3 shows ads.

### Which is updated more often, QS/1 Message Center or PK 3?

QS/1 Message Center ships an update every 3 weeks, and PK 3 every 2 months. Most recently, QS/1 Message Center was updated on October 26, 2026 and PK 3 on October 30, 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.*