# SII Printer Utility vs Thermos Pro

The clearest difference is update cadence: Thermos Pro at every 3 weeks 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, Thermos Pro every 3 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | SII Printer Utility | Thermos Pro |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 51 MB | 41 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Seiko Instruments Inc.](https://appshunter.io/developer/430532225) | [Prabal Verma](https://appshunter.io/developer/1751691320) |

## 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


### Thermos Pro

[App page](https://appshunter.io/ios/app/thermos-pro-bluetooth-print/id6738410444)

**Features:** macOS Compatibility

**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 Thermos Pro free?

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

### Do SII Printer Utility or Thermos Pro have ads?

Neither SII Printer Utility nor Thermos Pro shows ads.

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

SII Printer Utility ships an update every 6 months, and Thermos Pro every 3 weeks. Most recently, SII Printer Utility was updated on November 3, 2026 and Thermos Pro 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.*