# optrel vs DLLHS

The clearest difference is update cadence: DLLHS at every 2 months against optrel's every 6 months. optrel's advantage is iOS requirement (12.2 vs 16.1). 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.

optrel ships an update every 6 months, DLLHS every 2 months. The most recent releases landed on June 11, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | optrel | DLLHS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Size | 207 MB | 103 MB |
| Requires iOS | **12.2** | 16.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [optrel tec ag](https://appshunter.io/developer/1549530923) | [Abtus Ltd](https://appshunter.io/developer/1568295463) |

## What reviewers say

### optrel

[App page](https://appshunter.io/ios/app/optrel/id1549530921)

**Features:** macOS Compatibility

**In-app purchases:** none


### DLLHS

[App page](https://appshunter.io/ios/app/dllhs/id1568295461)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is optrel free?

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

### Is DLLHS free?

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

### Do optrel or DLLHS have ads?

Neither optrel nor DLLHS shows ads.

### Which is updated more often, optrel or DLLHS?

optrel ships an update every 6 months, and DLLHS every 2 months. Most recently, optrel was updated on June 11, 2026 and DLLHS on September 12, 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.*