Moby Pixel Mighty brings free synth, sampler, and effects to Apple devices

Moby Pixel’s Mighty landed as a rare free AUv3 that bundled a subtractive synth, sampler, effects processor, and MIDI toolset into one package for iPhone, iPad, and Mac. For players who like the old workflow of building a patch, layering samples, and shaping the result with effects, that is the useful part: it offered a low-friction way to sketch vintage-style ideas without buying into another hardware clone or a paid mobile app.

The core synth used the AudioKit engine and leaned into familiar subtractive territory. It gave users three independent multi-wave oscillators, each with volume, semitone, detune, and pan controls, plus a low-pass filter with cutoff and resonance, two ADSR envelopes, and an LFO that could be routed to pitch, cutoff, or volume. The built-in effects section added nine algorithms, including reverb, delay, chorus, motion-style modulation, and unison up to eight voices, so the app could move from raw oscillator tones to thicker, more finished textures quickly.

What made Mighty more than a preset player was the sampler. It sat separately from the synth engine, and users could record audio directly in the app or import files, then map them across keys, set loop points, adjust root notes and note ranges, and save instruments and banks for reuse. The app also supported SoundFonts in SF2 and SFZ formats, which makes it especially practical for anyone revisiting classic sample libraries or trying to rebuild that old rack-and-sampler habit inside a modern host.

Moby Pixel said Mighty shipped as four AUv3 plugins in one app: Mighty Synth, Mighty Sampler, Mighty Effects, and Mighty MIDI. Each could be loaded individually in an AUv3 host or DAW, turning the release into a compact modular setup instead of a single self-contained keyboard app. That design fits Moby Pixel’s larger profile as a studio run by Nick Culbertson in Dallas, Texas, where the company says it makes open-source tools and contributes regularly to AudioKit. AudioKit coverage has identified Culbertson as an AudioKit team member, and Mighty followed earlier releases such as Overdrive Synth, another free AUv3 and multi-sampler app with in-app purchases.

The appeal is straightforward. Mighty was free, the App Store listed it at 163.9 MB, and it already had a 5.0 average from 21 ratings. Optional sound packs gave Culbertson a way to support development without locking the core app behind a paywall, which is exactly why this release felt like a sensible entry point for Apple users who want vintage textures, sampler chops, and a working sketchpad in one place.