Moby Pixel released Mighty Synth Sampler, a free all-in-one tool that combines subtractive synthesis and sampling for iPhone, iPad, and Mac. The architecture sits on four pillars: a three-oscillator synth engine, a dedicated 16-slot sampler for building custom instruments, a sound pack store, and four distinct AUv3 plugins. You can record audio directly into the app and map it across the keyboard to create custom instruments, or import SF2 and SFZ SoundFont files directly — a stable option for producers who need SoundFont playback on iOS. The interface is clean and stays manageable on both smaller iPhone screens and the larger iPad Pro display, though the sampler mapping has a learning curve before the full workflow becomes quick.
The quad-AUv3 suite is the most notable structural decision: rather than a single instrument plugin, the app ships four separate plugins — Mighty Synth, Mighty Sampler, Mighty Effects, and Mighty MIDI. Each one can be loaded independently in any AUv3 host, which gives you more flexibility in session routing than a monolithic instrument plugin would. Multiple play surface layouts are included — keys, pads, and scale-constrained modes including an “All 4ths” layout. In GarageBand, the synth and sampler load as standard instrument plugins with full MIDI automation. In AUM, you can run Mighty Effects and Mighty MIDI alongside the instrument plugins in the same session for a complete production chain. Core synth and sampler engine features are fully available without purchase; downloadable sound packs (free and paid) expand the library.
Key features:
- Three-Oscillator Synth Engine: Independent volume, semitone, and pan controls per layer
- 16-Slot Sampler: Loop points, root note mapping, and direct in-app recording
- SoundFont Support: Full SF2 and SFZ import compatibility
- Quad-AUv3 Suite: Four separate plugins — Mighty Synth, Mighty Sampler, Mighty Effects, and Mighty MIDI
- Built-in Effects: Reverb, delay, chorus, drive, and compressor
- Dynamic Play Surfaces: Keys, pads, and scale-constrained modes including All 4ths layout
App price: Free.
In-app purchases: Downloadable Sound Packs (free and paid) — all core synth and sampler engine features remain fully unlocked without purchase.
Original release: May 7, 2026 | Latest update: May 7, 2026
