Quarked vs SL CastShift
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Quarked
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Quarked is a high-performance granular synthesizer designed for precision sound design. Built around a native C-based audio engine, it prioritizes low-latency manipulation and a functional workflow that stays out of your way. Capture audio directly via the integrated tape-style recorder or import existing samples to begin deconstructing them. Quarked treats sound as a physical material, allowing you to zoom, slice, and re-texture with tactile, high-precision controls. The Engine: Granular Core: Independent control over grain size, density, position, and scan speed. Performance First: A native audio backend ensures smooth parameter interpolation without artifacts. Note-Level ADSR: Professional-grade envelope shaping with exponential curves for natural release. The Workflow Precision Ruler: Navigate waveforms with high-resolution sliders designed for micro-adjustments. Technical Aesthetic: A flat, distraction-free interface inspired by modern studio hardware. Dynamic FX Chain: A reorderable signal path featuring Delay, Reverb, Shimmer, and a 3-band technical EQ. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
SL CastShift
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Give your audio a different voice. SL CastShift is an AUv3 audio effect for iPhone and iPad that combines six transmission and media characters in one sound-design workflow: Radio, Phone, TV, Walkie, Megaphone and Codec. Start with 18 factory presets, three for each mode. Shape the result with Drive and Mix, high-pass and low-pass filters, Bass, Mid and Treble, then add Age, Distort, Bitcrush, Noise, Wow and ambience. Each preset recalls the complete sound. The AI control blends local adaptive processing using embedded neural models. Processing runs on your device, with no cloud inference or model download. Use CastShift as an AUv3 effect on an audio track in a compatible host. Feed it vocals, instruments, loops or sound effects and compare the six modes. This is an audio effect, not a MIDI instrument: it needs an audio source. The interface adapts to iPhone portrait and landscape, iPad and compact host windows. The standalone app does not automatically enable microphone-to-speaker monitoring. For processing audio from another music app, load the AUv3 extension in a compatible host.
Screenshots
Verdict
The clearest difference is price: Quarked at $14.99 against SL CastShift's $19.99. Quarked also leads on iOS requirement (13.0 vs 15.0). On update cadence, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Quarked costs $14.99 and SL CastShift $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Quarked ships an update every 8 days, SL CastShift every 9 days. Both last shipped on October 25, 2026.
| Parameter | Quarked | SL CastShift |
|---|---|---|
| Price | $14.99 β better | $19.99 |
| Update frequency | Every 8 days β better | Every 9 days |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 β better | 15.0 |
| Further details β not scored | ||
| Size | 23 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Syam Anand | VIACHESLAV ZHILTSOV |
In-app purchases
Quarked
No in-app purchases
SL CastShift
No in-app purchases





