Comparison

TAIL Sampler vs SL Knock

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

Head to head
About

TAIL Sampler

Features
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TAIL Sampler turns your phone into a fast, hands-on sampler and beatmaking instrument. Record a sound, chop it, map it across pads and play it back instantly โ€” no complicated setup, no lag. Built on a low-latency audio engine, TAIL Sampler is made for spontaneous ideas: capture a sample the moment inspiration hits and start playing straight away. WHY TAIL SAMPLER โ€ข Ultra-low latency โ€” play in real time with a tight, responsive feel. โ€ข Record anything โ€” sample your voice, an instrument, or any sound around you. โ€ข Play your way โ€” trigger samples from the on-screen pads or an external MIDI controller. โ€ข Made for mobile โ€” a clean, focused interface designed for one-handed, on-the-go creation. โ€ข Runs in the background โ€” keep your sound playing while you switch apps. FOR EVERY KIND OF MAKER Whether you're sketching a beat on the train, capturing a field recording, or performing live, TAIL Sampler keeps the workflow simple so you can stay in the creative flow. โ€ข Beatmakers โ€” build grooves from your own one-shots and loops. โ€ข Producers โ€” capture raw ideas anywhere and refine them later. โ€ข Sound designers โ€” record and reshape real-world audio. โ€ข Performers โ€” trigger samples live with MIDI. GET STARTED IN SECONDS 1. Record or import a sound. 2. Assign it to a pad. 3. Play, layer and jam. TAIL Sampler is designed to get out of your way. Fewer menus, more music. Download TAIL Sampler and start turning sounds into songs today.

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. โ€ข Fast controls for impact and body โ€ข Tone shaping for tighter or heavier character โ€ข Mix control for parallel processing โ€ข Factory presets and local user presets โ€ข 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

TAIL Sampler4 screens
SL Knock3 screens

Verdict

The call

The clearest difference is price: TAIL Sampler at $3.99 against SL Knock's $6.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

TAIL Sampler costs $3.99 and SL Knock $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

TAIL Sampler ships an update every 5 days, SL Knock weekly. The most recent releases landed on October 19, 2026 and October 16, 2026 respectively.

Scorecard1 real difference ยท 5 level
TAIL Sampler versus SL Knock: the parameters behind the verdict, then further details
ParameterTAIL SamplerSL Knock
Price$3.99 โ€” better$6.99
Update frequencyEvery 5 days โ€” betterWeekly
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS16.315.0 โ€” better
Further details โ€” not scored
Size5 MB28 MB
Age rating17+4+
DeveloperSolid Grid Systems GmbHVIACHESLAV ZHILTSOV

In-app purchases

None

TAIL Sampler

No in-app purchases

None

SL Knock

No in-app purchases

Questions

Is TAIL Sampler free?
TAIL Sampler costs $3.99, with no in-app purchases.
Is SL Knock free?
SL Knock costs $6.99, with no in-app purchases.
Do TAIL Sampler or SL Knock have ads?
Neither TAIL Sampler nor SL Knock shows ads.
Which is updated more often, TAIL Sampler or SL Knock?
TAIL Sampler ships an update every 5 days, and SL Knock weekly. Most recently, TAIL Sampler was updated on October 19, 2026 and SL Knock on October 16, 2026.

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