# ZDT vs DPHQ

The clearest difference is update cadence: DPHQ at every 3 weeks against ZDT's every 15 months. DPHQ also leads on iOS requirement (13.0 vs 15.0). 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.

ZDT ships an update every 15 months, DPHQ every 3 weeks. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | ZDT | DPHQ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 3 weeks** |
| Size | 40 MB | 48 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zachariah Dodge](https://appshunter.io/developer/1705070567) | [DP Willow, LLC](https://appshunter.io/developer/1783608039) |

## What reviewers say

### ZDT

[App page](https://appshunter.io/ios/app/zdt-online/id6463812665)

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

**In-app purchases:** none


### DPHQ

[App page](https://appshunter.io/ios/app/dphq/id6739070207)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ZDT free?

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

### Is DPHQ free?

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

### Do ZDT or DPHQ have ads?

Neither ZDT nor DPHQ shows ads.

### Which is updated more often, ZDT or DPHQ?

ZDT ships an update every 15 months, and DPHQ every 3 weeks. Most recently, ZDT was updated on October 24, 2026 and DPHQ on October 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.*