# Struix vs HDR Merge Pro

The clearest difference is device support: HDR Merge Pro at 3 against Struix's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Struix ships an update every 9 days, HDR Merge Pro fortnightly. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Struix | HDR Merge Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Fortnightly |
| Size | 7 MB | 76 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [皓逸 祝](https://appshunter.io/developer/1697256807) | [Right Home Media Inc.](https://appshunter.io/developer/1637189750) |

## What reviewers say

### Struix

[App page](https://appshunter.io/ios/app/struix/id6787133532)

**In-app purchases:** none


### HDR Merge Pro

[App page](https://appshunter.io/ios/app/hdr-merge-pro/id6790989580)

**Features:** Family Sharing

**In-app purchases:** none


## Frequently asked questions

### Is Struix free?

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

### Is HDR Merge Pro free?

HDR Merge Pro is free to download, with no in-app purchases.

### Do Struix or HDR Merge Pro have ads?

Neither Struix nor HDR Merge Pro shows ads.

### Which is updated more often, Struix or HDR Merge Pro?

Struix ships an update every 9 days, and HDR Merge Pro fortnightly. Most recently, Struix was updated on October 3, 2026 and HDR Merge Pro on October 8, 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.*