Comparison

Eternal Flow Dub vs SL Knock

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Eternal Flow Dub

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
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If you like dub techno music, you can turn your phone into endless dub techno "mix" or "live" generator. Just turn it on, press Start and listen as a usual player, but music will never end. Main theme or "track" will change in every 3-4 minutes automatically. All music is created right on your phone so it can work offline without internet connection. - To switch to next track tap Reset button. - To record/stop recording created music tap R icon. - If you like current loop and want to listen to it for a long time, press snowflake icon - loop will freeze and instruments and patterns will not change until you tap snowflake again. - If you want to postpone next track's start tap on plus icon and current track's time will be increased by 64 bars. - Also it has "mute" feature - tap on gear icon and you can disable chosen instruments and use app as a chord generator, for example.

About

SL Knock

Features
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SL Knock is a focused AUv3 dynamics and tone effect for adding punch, body and controlled low-end weight to drums, samples and loops. • Fast controls for impact and body • Tone shaping for tighter or heavier character • Mix control for parallel processing • Factory presets and local user presets • AUv3 support for compatible iPad music hosts Works as a standalone preview app and as an AUv3 effect in GarageBand, AUM, Cubasis, BeatMaker 3 and other compatible hosts.

Screenshots

Eternal Flow Dub4 screens
SL Knock3 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Eternal Flow Dub versus SL Knock: the parameters behind the verdict, then further details
ParameterEternal Flow DubSL Knock
Price$4.99 — better$6.99
Rating5.0 (5 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 3 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.2 — better15.0
Further details — not scored
Size74 MB28 MB
Age rating4+4+
DeveloperPetr SerkinVIACHESLAV ZHILTSOV

In-app purchases

None

Eternal Flow Dub

No in-app purchases

None

SL Knock

No in-app purchases

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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