# Knud vs A3 Atlas Scanner

The clearest difference is in-app purchases: A3 Atlas Scanner at none against Knud's 2. A3 Atlas Scanner also leads on ads (none vs shown) and iOS requirement (17.0 vs 26.2). On price, update cadence and device support there is nothing between them.

Both are free to download. Knud sells 2 in-app purchases, starting at $2.99 per month. A3 Atlas Scanner asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Knud | A3 Atlas Scanner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 days | Every 3 days |
| Size | 11 MB | 12 MB |
| Requires iOS | 26.2 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Martin Ibsen](https://appshunter.io/developer/1883380712) | [Alexandre Bouchard](https://appshunter.io/developer/1848755596) |

## What reviewers say

### Knud

[App page](https://appshunter.io/ios/app/knud/id6760232508)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Knud Pro | $2.99 | per month |
| Pro Lifetime — Launch-tilbud | $29.99 | one-time |


### A3 Atlas Scanner

[App page](https://appshunter.io/ios/app/a3-atlas-scanner/id6787545744)

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

**In-app purchases:** none


## Frequently asked questions

### Is Knud free?

Knud is free to download, with in-app purchases available.

### Is A3 Atlas Scanner free?

A3 Atlas Scanner is free to download, with no in-app purchases.

### Do Knud or A3 Atlas Scanner have ads?

Knud shows ads; A3 Atlas Scanner does not.

### Which is updated more often, Knud or A3 Atlas Scanner?

Knud ships an update every 3 days, and A3 Atlas Scanner every 3 days. Most recently, Knud was updated on October 31, 2026 and A3 Atlas Scanner on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*