# SynQR vs Höllentor

The clearest difference is iOS requirement: Höllentor at 15.0 against SynQR's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. SynQR sells 4 one-off in-app purchases and Höllentor sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

SynQR ships an update monthly, Höllentor every 5 weeks. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | SynQR | Höllentor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.2 (11 ratings)](https://appshunter.io/ios/app/synqr/id6448926987/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 74 MB | 7 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Benjamin Hoerbe](https://appshunter.io/developer/1651232137) | [Tobias Heide](https://appshunter.io/developer/1892726291) |

## What reviewers say

### SynQR

[App page](https://appshunter.io/ios/app/synqr/id6448926987)

This utility helps synchronize audio and video playback by accurately measuring real-time offsets. It assists users in adjusting their setups for perfect synchronization, especially in Digital Audio Workstations and Non-Linear Editors.

**Highlights:** Real-time offset measurement, Synchronization adjustment, Supports DAWs and NLEs, Uses film leaders/test videos, Downloadable test materials

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro 7 Day Trial | Free | one-time |
| Free Three-Day Trial | Free | one-time |
| One-Year Edu Subscription. | $0.99 | one-time |
| SynQR Pro | $39.99 | one-time |


### Höllentor

[App page](https://appshunter.io/ios/app/hollentor/id6762065040)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Höllentor Pro | $17.99 | one-time |


## Frequently asked questions

### Is SynQR free?

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

### Is Höllentor free?

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

### Do SynQR or Höllentor have ads?

Neither SynQR nor Höllentor shows ads.

### Which is updated more often, SynQR or Höllentor?

SynQR ships an update monthly, and Höllentor every 5 weeks. Most recently, SynQR was updated on November 7, 2026 and Höllentor on November 5, 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.*