# HP PrintOS for PSP vs Spectro by Variable

The clearest difference is rating: Spectro by Variable at 4.8 against HP PrintOS for PSP's 3.7. Spectro by Variable also leads on device support (3 vs 1) and iOS requirement (13.4 vs 16.4). HP PrintOS for PSP's advantage is in-app purchases (none vs 5). On price, review sentiment, ratings volume and update cadence there is nothing between them.

Both are free to download. Spectro by Variable sells 5 in-app purchases, starting at $9.99 per month. HP PrintOS for PSP asks for nothing beyond the download.

Spectro by Variable holds the better App Store score, 4.8 against 3.7. Both are backed by a comparable volume of ratings — 65 and 120 respectively. Written reviews point the same way: 49% of HP PrintOS for PSP's written reviews are positive against 50% of Spectro by Variable's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | HP PrintOS for PSP | Spectro by Variable |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (65 ratings)](https://appshunter.io/ios/app/hp-printos-for-psp/id1091732549/reviews) | **[4.8 (120 ratings)](https://appshunter.io/ios/app/spectro-by-variable/id1399186748/reviews)** |
| Number of ratings | 65 | **120** |
| Positive reviews | 48.6% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 95 MB | 84 MB |
| Requires iOS | 16.4 | **13.4** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HP Inc.](https://appshunter.io/developer/299531650) | [Variable Technologies LLC](https://appshunter.io/developer/569541572) |

## What reviewers say

### HP PrintOS for PSP

[App page](https://appshunter.io/ios/app/hp-printos-for-psp/id1091732549)

Monitor your production floor remotely using your smartphone or tablet. Gain real-time insights into printer status, production trends, and service activity to optimize performance and minimize downtime. Make data-driven decisions to improve efficiency and reduce costs, all from your fingertips.

**Highlights:** Remote production floor monitoring, Real-time printer status, Production trend analysis, Fleet status overview, Service activity tracking, Performance optimization insights

**Features:** Vision Pro support

**In-app purchases:** none


### Spectro by Variable

[App page](https://appshunter.io/ios/app/spectro-by-variable/id1399186748)

This app enables color professionals to precisely measure, match, and communicate color data using connected devices. Access extensive color libraries and analyze spectral curves for accurate results anytime, anywhere.

**Highlights:** Scan, match, and compare colors, View spectral curves and LAB values, Access extensive brand color libraries, Analyze colors under multiple light sources, Store and export scan data, Create and store color standards

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| Monthly | $15.99 | per month |
| Quality Control Module | $75.00 | per month |
| Annual | $99.99 | per year |
| Annual | $149.99 | per year |


## Frequently asked questions

### Is HP PrintOS for PSP free?

HP PrintOS for PSP is free to download, with no in-app purchases.

### Is Spectro by Variable free?

Spectro by Variable is free to download, with in-app purchases available.

### Which has better reviews, HP PrintOS for PSP or Spectro by Variable?

Spectro by Variable is rated higher. HP PrintOS for PSP averages 3.7 out of 5 from 65 ratings, while Spectro by Variable averages 4.8 from 120 ratings.

### Do HP PrintOS for PSP or Spectro by Variable have ads?

Neither HP PrintOS for PSP nor Spectro by Variable shows ads.

### Which is updated more often, HP PrintOS for PSP or Spectro by Variable?

HP PrintOS for PSP ships an update every 3 weeks, and Spectro by Variable every 3 weeks. Most recently, HP PrintOS for PSP was updated on October 24, 2026 and Spectro by Variable on October 25, 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.*