# Door Data Systems vs PFP Defined

The clearest difference is update cadence: PFP Defined at weekly against Door Data Systems's every 2 months. PFP Defined also leads on iOS requirement (12.0 vs 15.1). 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.

Door Data Systems ships an update every 2 months, PFP Defined weekly. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Door Data Systems | PFP Defined |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Size | 40 MB | 38 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Door Data Systems](https://appshunter.io/developer/1530827741) | [M&W Media Limited](https://appshunter.io/developer/1097809906) |

## What reviewers say

### Door Data Systems

[App page](https://appshunter.io/ios/app/door-data-systems/id1538987604)

**Features:** Vision Pro support

**In-app purchases:** none


### PFP Defined

[App page](https://appshunter.io/ios/app/pfp-defined/id6474684445)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Door Data Systems free?

Door Data Systems is free to download, with no in-app purchases.

### Is PFP Defined free?

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

### Do Door Data Systems or PFP Defined have ads?

Neither Door Data Systems nor PFP Defined shows ads.

### Which is updated more often, Door Data Systems or PFP Defined?

Door Data Systems ships an update every 2 months, and PFP Defined weekly. Most recently, Door Data Systems was updated on October 6, 2026 and PFP Defined on October 1, 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.*