# Masimo U vs AZ Pacific 8

The clearest difference is update cadence: AZ Pacific 8 at every 2 weeks against Masimo U's every 40 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.

Masimo U ships an update every 40 months, AZ Pacific 8 every 2 weeks. The most recent releases landed on September 29, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Masimo U | AZ Pacific 8 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 40 months | **Every 2 weeks** |
| Size | 55 MB | 81 MB |
| Requires iOS | 15.5 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Masimo Corporation](https://appshunter.io/developer/568979269) | [Medable, Inc.](https://appshunter.io/developer/660544651) |

## What reviewers say

### Masimo U

[App page](https://appshunter.io/ios/app/masimo-u/id1454037352)

**In-app purchases:** none


### AZ Pacific 8

[App page](https://appshunter.io/ios/app/az-pacific-8/id1591978373)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Masimo U free?

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

### Is AZ Pacific 8 free?

AZ Pacific 8 is free to download, with no in-app purchases.

### Do Masimo U or AZ Pacific 8 have ads?

Neither Masimo U nor AZ Pacific 8 shows ads.

### Which is updated more often, Masimo U or AZ Pacific 8?

Masimo U ships an update every 40 months, and AZ Pacific 8 every 2 weeks. Most recently, Masimo U was updated on September 29, 2026 and AZ Pacific 8 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.*