LuSID Synthesizer
Synthwave SID-inspired synth
About
Create synthwave music with a powerful, intuitive synthesizer. Features a multi-voice engine, versatile filter, built-in sequencer, and a range of effects. Record and share your creations easily.
What's New in LuSID Synthesizer
1.1
July 1, 2026
Now Universal: native iPad support with two-column synth, bigger keyboard, and adaptive layouts. What's new: - Interactive ADSR curve — drag the handles to shape your envelopes. - Hold latch — sustain notes forever for drones and pads. - Long release and decay (up to 20 seconds) for soundscapes. - Refreshed visuals: glowing waveform glyphs, filter pills, animated background, hero with note name, redesigned splash. - Save and recall patches via the new Patches sheet. - Stereo Width control with Spatial Audio support on AirPods Pro/Max. - Audio fix: app no longer goes silent after saving a patch.
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FAQ
What is LuSID Synthesizer?
LuSID Synthesizer is a SwiftUI-based synthesizer designed for creating synthwave music. It offers eight-voice polyphony, a versatile filter, a built-in sequencer, and a suite of audio effects.
Does LuSID Synthesizer have ads?
No, LuSID Synthesizer is completely ad-free. The developer explicitly states that the app contains no advertisements, ensuring an uninterrupted creative experience.
What devices does LuSID Synthesizer support?
LuSID Synthesizer is currently supported on iPhone. It is designed to run on iOS devices.
How often is LuSID Synthesizer updated?
The latest version of LuSID Synthesizer is 1.1, last updated on July 1, 2026. This indicates a recent update, suggesting ongoing development and support.
Can I record and save my music with LuSID Synthesizer?
Yes, LuSID Synthesizer includes a RECORD tab that allows you to capture everything you hear as a WAV file. These recordings are saved to the app's Documents folder and can be shared via the iOS share sheet.
What is the age rating for LuSID Synthesizer?
LuSID Synthesizer has an age rating of 4+. This indicates it is suitable for users of all ages, with no content restrictions.
Does LuSID Synthesizer collect user data?
No, LuSID Synthesizer prioritizes user privacy. It does not collect any data, make network requests, or contain third-party SDKs, and all recordings remain on the device until shared.
What are the key sound design features in LuSID Synthesizer?
LuSID Synthesizer features a triangle, sawtooth, square, and noise oscillator with PolyBLEP anti-aliasing. It also includes a Cytomic state-variable filter with drive, ring modulation, distortion, and various reverb types.