King of Digital
AudioKit's King of Digital is an epic 64-voice hybrid synthesizer that combines virtual analog and PCM synthesis, offering over 900 handcrafted presets and 3+ gigabytes of original samples recorded from analog and FM synths over 30 years old. Designed for versatility, it is ideal for creating epic pads, retrowave, digital keys, vaporwave, synthwave, and more. The app features dual layers per voice, keyboard splits, a fun step sequencer, three LFOs capable of modulating each other, and per-voice harmonic key-tracked envelope filters. Its space-saving compression technology compresses all sounds and expansions to a total of 450 MB, ensuring efficient use of device storage. King of Digital is compatible with iPhone, iPad, and iOS AUv3 plug-ins, supporting MIDI input from various sources, including customizable on-screen keyboards, USB MIDI controllers, Bluetooth MIDI controllers, and networked MIDI sources.
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SunVox
SunVox is a compact, fast, and powerful modular synthesizer combined with a pattern-based sequencer (tracker), designed for music enthusiasts who wish to compose music anytime, anywhere, on any device or system. It is available for multiple platforms, including Windows, macOS, Linux (x86, x86_64, ARM, ARM64), iOS, Android, and Windows CE, with free versions for most systems except Android and iOS. SunVox features highly optimized synth algorithms and a flexible architecture, supporting various sound systems such as ASIO, DirectSound, MME, ALSA, OSS, JACK, Audiobus, and IAA. It functions as an AU instrument/effect on iOS and supports 16/24/32-bit WAV, AIFF, and XI samples, along with multitrack WAV export capabilities. The software offers MIDI In/Out/Import/Export, real-time sample recording, and a powerful microtonal sequencer. Users can import XM (FastTracker) and MOD (ProTracker, OctaMED) files and perform real-time recording of various sound events.
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TyrellN6
TyrellN6 is a compact, sporty synth. Based on concepts and ideas for a hardware synth: a few modules, novel features, analog sound, and low cost. TyrellN6 is the software version manifestation of these ideas. Available as a free download exclusively from the German online magazine Amazona. TyrellN6 is a free virtual analog synthesizer developed by u-he, inspired by the design of classic hardware synths like the Roland Juno 60. It features two oscillators, noise, a ring modulator, and two LFOs with eight waveforms. The audio source mixer includes authentic overdrive and filter feedback, while the twin filter is related to u-he's Diva synthesizer. TyrellN6 supports unison with up to eight voices and offers analog-type ADSR envelopes that are loopable or LFO-triggered. A small modulation matrix with depth modulation from a second source, a chorus effect with three modes, and MIDI learn/unlearn for hardware control are also included.
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AudioKit Synth One
AudioKit Synth One is the world's first completely free and open source professional iOS synthesizer app, developed by volunteers to provide a full-featured and ad-free music creation experience. It features a hybrid analog/FM poly synth with six-voice capability, over 300 presets crafted by renowned sound designers, and supports accessibility with VoiceOver for the blind and visually impaired. The app integrates seamlessly with Audiobus 3, and Inter-app Audio (IAA), and is compatible with AUM, BeatMaker 3, Cubasis, and GarageBand. Its sound engine includes five oscillators, two assignable LFOs with numerous routing options, and a vintage-style 16-step sequencer. Additional features comprise a classic poly arpeggiator, Ableton Link support, touchable ADSR envelopes for amp and filter, a 4-pole vintage low-pass filter, high-pass/band-pass filters, and effects such as reverb and multi-tap delay. MIDI integration allows control via MIDI keyboards or DAWs.
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