# Quad vs PRO.4 DOD

Quad and PRO.4 DOD are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 9, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Quad | PRO.4 DOD |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 160 MB | 46 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [EventBK Limited](https://appshunter.io/developer/740353440) | [Pro-Bit PRO.4 d.o.o.](https://appshunter.io/developer/1071235078) |

## What reviewers say

### Quad

[App page](https://appshunter.io/ios/app/quad-a/id6741701126)

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

**In-app purchases:** none


### PRO.4 DOD

[App page](https://appshunter.io/ios/app/pro4-dod/id6751571923)

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

**In-app purchases:** none


## Frequently asked questions

### Is Quad free?

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

### Is PRO.4 DOD free?

PRO.4 DOD is free to download, with no in-app purchases.

### Do Quad or PRO.4 DOD have ads?

Neither Quad nor PRO.4 DOD shows ads.

### Which is updated more often, Quad or PRO.4 DOD?

Quad ships an update every 3 weeks, and PRO.4 DOD every 3 weeks. Most recently, Quad was updated on September 9, 2026 and PRO.4 DOD on September 24, 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.*