# INFUSION26 vs Sentinel K9

The clearest difference is update cadence: Sentinel K9 at every 4 days against INFUSION26's every 3 months. Sentinel K9 also leads on iOS requirement (15.0 vs 17.0). 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.

INFUSION26 ships an update every 3 months, Sentinel K9 every 4 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | INFUSION26 | Sentinel K9 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sentinel-k9/id6795838263/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | — | Free |
| Size | 80 MB | 45 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [McElroy Manufacturing, Inc.](https://appshunter.io/developer/376891711) | [BusyPaws](https://appshunter.io/developer/1719876170) |

## What reviewers say

### INFUSION26

[App page](https://appshunter.io/ios/app/infusion26/id1639135956)

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

**In-app purchases:** none


### Sentinel K9

[App page](https://appshunter.io/ios/app/sentinel-k9/id6795838263)

Manage all aspects of your pet's care in one convenient application. Easily book appointments, access important records, and receive real-time updates on your pet's well-being. Enjoy peace of mind knowing your furry friend is receiving excellent care.

**Highlights:** Book pet visits, Access pet records, Send and receive messages, Receive care updates, Manage pet's well-being

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

**In-app purchases:** none


## Frequently asked questions

### Is INFUSION26 free?

INFUSION26 is free to download, with no in-app purchases.

### Is Sentinel K9 free?

Sentinel K9 is free to download, with no in-app purchases.

### Do INFUSION26 or Sentinel K9 have ads?

Neither INFUSION26 nor Sentinel K9 shows ads.

### Which is updated more often, INFUSION26 or Sentinel K9?

INFUSION26 ships an update every 3 months, and Sentinel K9 every 4 days. Most recently, INFUSION26 was updated on October 30, 2026 and Sentinel K9 on October 31, 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.*