# Preo On vs AP Inspector

The clearest difference is update cadence: AP Inspector at every 3 days against Preo On's every 3 weeks. 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.

Preo On ships an update every 3 weeks, AP Inspector every 3 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Preo On | AP Inspector |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Size | 147 MB | 43 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Preo ApS](https://appshunter.io/developer/1683828233) | [Auction Group A/S](https://appshunter.io/developer/705374937) |

## What reviewers say

### Preo On

[App page](https://appshunter.io/ios/app/preo-on-site/id6481174869)

**Features:** macOS Compatibility

**In-app purchases:** none


### AP Inspector

[App page](https://appshunter.io/ios/app/ap-inspector/id6764258571)

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

**In-app purchases:** none


## Frequently asked questions

### Is Preo On free?

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

### Is AP Inspector free?

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

### Do Preo On or AP Inspector have ads?

Neither Preo On nor AP Inspector shows ads.

### Which is updated more often, Preo On or AP Inspector?

Preo On ships an update every 3 weeks, and AP Inspector every 3 days. Most recently, Preo On was updated on November 4, 2026 and AP Inspector on October 31, 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.*