# Struix vs MergeHDR

The clearest difference is in-app purchases: Struix at none against MergeHDR's 2. MergeHDR's advantage is device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. MergeHDR sells 2 in-app purchases, starting at $9.99 per year. Struix asks for nothing beyond the download.

Struix ships an update every 9 days, MergeHDR every 5 days. The most recent releases landed on October 3, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Struix | MergeHDR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/mergehdr/id6793486041/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 7 MB | 9 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) | [Sandro Gumz](https://appshunter.io/developer/1194790286) |

## What reviewers say

### Struix

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

**In-app purchases:** none


### MergeHDR

[App page](https://appshunter.io/ios/app/mergehdr/id6793486041)

Automatically finds and merges exposure-bracketed photos from your library. Offers manual control over alignment, deghosting, and tone-mapping for professional HDR results. All processing happens on your device for privacy and offline use.

**Highlights:** Automatic exposure bracket detection, Manual alignment and deghosting, Adjustable tone-mapping styles, Per-exposure layer control, On-device processing, Export to HEIC, Universal Purchase

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MergeHDR Pro (Yearly) | $9.99 | per year |
| MergeHDR Pro (Lifetime) | $19.99 | one-time |


## Frequently asked questions

### Is Struix free?

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

### Is MergeHDR free?

MergeHDR is free to download, with in-app purchases available.

### Do Struix or MergeHDR have ads?

Neither Struix nor MergeHDR shows ads.

### Which is updated more often, Struix or MergeHDR?

Struix ships an update every 9 days, and MergeHDR every 5 days. Most recently, Struix was updated on October 3, 2026 and MergeHDR on October 21, 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.*