Bit Splitter vs SL Air
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bit Splitter
This app manipulates audio by isolating, gating, or masking specific bit-planes of the input signal. It offers unique sound-shaping capabilities for creating glitchy, degraded, or rhythmically chopped audio effects.
- Bit-plane isolation
- Gating with bit-planes
- Bit-depth reduction (masking)
- Adjustable bit selection
- Input drive control
- Dry/wet mix control
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BIT SPLITTER A bit-plane manipulator. The input is scaled and quantized to an 8-bit value, then a single bit-plane of that value is used to reshape the signal. Where a bit crusher reduces resolution and hands back a degraded copy of the sound, the bit splitter operates on one specific bit and can either output that bit on its own, use it to gate the input, or mask the signal down to a chosen number of bits. MODES ISOLATE Outputs the chosen bit-plane on its own as a bipolar square wave. The most-significant bit behaves like a sign comparator, producing a hard square that tracks the waveform; lower bits flip more often as the amplitude moves, giving increasingly noisy, aliased fuzz. This is the most literal reading of splitting a bit out. GATE Passes the dry input only while the chosen bit is high, and mutes it otherwise. The signal is chopped by its own bit-plane, producing glitchy, rhythmic gating that still carries the source material underneath. MASK Zeros every bit below the chosen one and reconstructs the result to audio. This is a bit-depth reduction in which BIT sets how many low bits are discarded: at 0 the signal is untouched, at 7 only the most-significant bit survives (1-bit). Closest of the three to a classic crusher, but with arbitrary bit selection. CONTROLS BIT In Isolate and Gate, selects which bit-plane is used, from 0 (LSB) to 7 (MSB). In Mask, sets the lowest bit that is kept, so it acts as a resolution control. Lower bits track fine detail and toggle rapidly; higher bits track the gross shape of the waveform. Range: 0 to 7 THRESH Input drive into the quantizer. The signal is divided by this value before being mapped to a byte, so lower settings push the signal harder into the 8-bit range (clipping into it sooner) while higher settings keep it quieter and more centered. It changes which bits are active for a given input level, and so reshapes the character of every mode. Range: 0.01 to 2.0 MODE Selects the bit-plane operation: Isolate, Gate, or Mask (see above). Switching mode changes what BIT means, so the two are best adjusted together. MIX Controls the balance between the unprocessed (dry) input and the processed (wet) output. At 0% only the dry signal is heard; at 100% only the processed signal passes through. Intermediate values produce a linear crossfade, useful for blending the harsher modes back under the source for parallel-style processing. Range: 0% to 100%
SL Air
Enhance your audio with this AUv3 effect, designed to add brightness, presence, and stereo width. Achieve a polished top-end for vocals, drums, samples, and full mixes with intuitive controls and a motion display.
- Controlled brightness (Air & Lift)
- Smoother high-frequency detail (Silk)
- Stereo expansion (Wide)
- Polished finish (Glow)
- Audio-reactive motion display
- Factory and user presets
- AUv3 support
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SL Air is a streamlined AUv3 audio effect for adding brightness, presence, stereo width and a polished top end to vocals, drums, samples and mixes. • Air and Lift for controlled brightness • Silk for smoother high-frequency detail • Wide for stereo expansion • Glow for a polished finish • Audio-reactive motion display • 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
Verdict
The clearest difference is price: Bit Splitter at $1.99 against SL Air's $6.99. Bit Splitter also leads on ratings volume (3 vs 1). SL Air's advantage is iOS requirement (15.0 vs 17.0). On rating, ads, in-app purchases and monetization model 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
Bit Splitter costs $1.99 and SL Air $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Bit Splitter against 5.0 for SL Air. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
| Parameter | Bit Splitter | SL Air |
|---|---|---|
| Price | $1.99 — better | $6.99 |
| Rating | 5.0 (3 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | — | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Callback Audio, LLC | VIACHESLAV ZHILTSOV |
Customer experience
Bit Splitter
SL Air
In-app purchases
Bit Splitter
No in-app purchases
SL Air
No in-app purchases









