TAIL Sampler vs SL Knock
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
TAIL Sampler
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Record a sound. Chop it. Spread it across 128 pads and sequence it into a beat. All of it with no noticeable lag. TAIL Sampler is a one-time purchase. No subscription, no ads, no account, no feature locked behind a second payment. WHAT YOU CAN DO โข Record anything โ your voice, an instrument, a record, a field recording, any sound around you. โข Chop and slice โ trim on the waveform and drag the markers to where the hit actually starts. โข 128 pads โ 16 per bank, eight banks from A to H. Switching banks never cuts off a sound that is still playing. โข Step sequencer โ 16 tracks, 16 steps, with swing. Kicks, snares, hats and percussion, and a groove going in seconds. โข Tune every pad โ pitch, fine tune, attack and envelope, per pad. โข Play it live โ trigger with your fingers or from an external MIDI controller. โข Bounce and export โ render a sequence to WAV, or export your pads as WAV with the pitch baked in. โข Save your projects โ close the app, come back, pick up where you stopped. โข Background audio โ keep the sound running while you switch apps. Built on a low-latency audio engine, and touch-first: not a desktop interface squeezed onto a small screen. GET STARTED IN SECONDS 1. Record or import a sound. 2. Assign it to a pad. 3. Play. No project setup, no sign-in, no tutorial to sit through. FOR EVERY KIND OF MAKER โข Beatmakers โ build grooves from your own one-shots and loops. โข Producers โ capture raw ideas anywhere and refine them later. โข Sound designers โ record and reshape real-world audio. โข Performers โ trigger samples live with MIDI. Whether you are sketching on the train, capturing a field recording or playing live, TAIL keeps the workflow short so you stay in the idea.
SL Knock
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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. โข Fast controls for impact and body โข Tone shaping for tighter or heavier character โข Mix control for parallel processing โข Factory presets and local user presets โข 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
Verdict
The clearest difference is update cadence: SL Knock at weekly against TAIL Sampler's every 5 weeks. TAIL Sampler's advantage is chart position (#187 vs unranked) and price ($4.99 vs $6.99). On ads, in-app purchases, device support and iOS requirement 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
TAIL Sampler costs $4.99 and SL Knock $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
TAIL Sampler ships an update every 5 weeks, SL Knock weekly. The most recent releases landed on October 25, 2026 and October 16, 2026 respectively.
| Parameter | TAIL Sampler | SL Knock |
|---|---|---|
| Price | $4.99 โ better | $6.99 |
| Update frequency | Every 5 weeks | Weekly โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Best chart rank | #187 โ better | โ |
| Devices | iPhone, iPad | iPhone, iPad, iPod โ better |
| Requires iOS | 16.3 | 15.0 โ better |
| Further details โ not scored | ||
| Size | 5 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Solid Grid Systems GmbH | VIACHESLAV ZHILTSOV |
In-app purchases
TAIL Sampler
No in-app purchases
SL Knock
No in-app purchases
Questions
Is TAIL Sampler free?
Is SL Knock free?
Do TAIL Sampler or SL Knock have ads?
Which is updated more often, TAIL Sampler or SL Knock?
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