# Eternal Flow Dub vs SL Knock

The clearest difference is update cadence: SL Knock at weekly against Eternal Flow Dub's every 3 months. Eternal Flow Dub's advantage is price ($4.99 vs $6.99) and iOS requirement (10.2 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Eternal Flow Dub costs $4.99 and SL Knock $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Eternal Flow Dub ships an update every 3 months, SL Knock weekly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Eternal Flow Dub | SL Knock |
| --- | --- | --- |
| Price | **$4.99** | $6.99 |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/eternal-flow-dub/id1476194210/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Paid | — |
| Size | 74 MB | 28 MB |
| Requires iOS | **10.2** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Petr Serkin](https://appshunter.io/developer/1476194209) | [VIACHESLAV ZHILTSOV](https://appshunter.io/developer/1862005860) |

## What reviewers say

### Eternal Flow Dub

[App page](https://appshunter.io/ios/app/eternal-flow-dub/id1476194210)

This app generates endless dub techno music directly on your device. Enjoy a unique "live" mix experience that works offline, with features to control track changes, loop freezing, and instrument muting.

**Highlights:** Endless dub techno music generation, Offline playback, Automatic track changes, Loop freezing, Instrument muting, Track delay

**Features:** macOS Compatibility

**In-app purchases:** none


### SL Knock

[App page](https://appshunter.io/ios/app/sl-knock/id6797349065)

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

**In-app purchases:** none


## Frequently asked questions

### Is Eternal Flow Dub free?

Eternal Flow Dub costs $4.99, with no in-app purchases.

### Is SL Knock free?

SL Knock costs $6.99, with no in-app purchases.

### Do Eternal Flow Dub or SL Knock have ads?

Neither Eternal Flow Dub nor SL Knock shows ads.

### Which is updated more often, Eternal Flow Dub or SL Knock?

Eternal Flow Dub ships an update every 3 months, and SL Knock weekly. Most recently, Eternal Flow Dub was updated on November 3, 2026 and SL Knock on October 31, 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.*