# SII Printer Utility vs UUUO

The clearest difference is update cadence: UUUO at every 10 days against SII Printer Utility's every 6 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.

SII Printer Utility ships an update every 6 months, UUUO every 10 days. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | SII Printer Utility | UUUO |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 10 days** |
| Monetization | Free | — |
| Size | 51 MB | 95 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Seiko Instruments Inc.](https://appshunter.io/developer/430532225) | [UUUO, inc.](https://appshunter.io/developer/1489082725) |

## What reviewers say

### SII Printer Utility

[App page](https://appshunter.io/ios/app/sii-printer-utility/id1558793350)

This application allows users to manage settings for Seiko Instruments Inc. printers. It enables writing and reading configurations, saving and loading settings to files, and printing current configurations. The utility also supports displaying printer information and resetting to default settings.

**Highlights:** Write settings to printer, Read settings from printer, Save/Load settings to file, Print function settings, Display printer information, Load default settings, Firmware update

**In-app purchases:** none


### UUUO

[App page](https://appshunter.io/ios/app/uuuo/id1571920961)

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

**In-app purchases:** none


## Frequently asked questions

### Is SII Printer Utility free?

SII Printer Utility is free to download, with no in-app purchases.

### Is UUUO free?

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

### Do SII Printer Utility or UUUO have ads?

Neither SII Printer Utility nor UUUO shows ads.

### Which is updated more often, SII Printer Utility or UUUO?

SII Printer Utility ships an update every 6 months, and UUUO every 10 days. Most recently, SII Printer Utility was updated on September 22, 2026 and UUUO on September 23, 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.*