# Countermark vs ONOS

The clearest difference is update cadence: ONOS at every 3 weeks against Countermark's every 2 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.

Countermark ships an update every 2 months, ONOS every 3 weeks. The most recent releases landed on September 18, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Countermark | ONOS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 16 MB | 59 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Wessex Technology Opto-electronic products limited](https://appshunter.io/developer/1202935479) | [Onos Technologies](https://appshunter.io/developer/1771829915) |

## What reviewers say

### Countermark

[App page](https://appshunter.io/ios/app/countermark/id1202935480)

This app scans a secure, human-readable data carrier for industrial use. It links to websites, images, or documents and can be manually entered via a website. Location and email confirmation may be required to access information.

**Highlights:** Scan secure data carriers, Link to websites, images, PDFs, Human-readable entry, Industrial printing compatibility, Location-based security, Email confirmation for access

**Features:** macOS Compatibility

**In-app purchases:** none


### ONOS

[App page](https://appshunter.io/ios/app/onos/id6499025913)

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

**In-app purchases:** none


## Frequently asked questions

### Is Countermark free?

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

### Is ONOS free?

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

### Do Countermark or ONOS have ads?

Neither Countermark nor ONOS shows ads.

### Which is updated more often, Countermark or ONOS?

Countermark ships an update every 2 months, and ONOS every 3 weeks. Most recently, Countermark was updated on September 18, 2026 and ONOS on September 15, 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.*