Oto-e
Music visualizer video maker
Drop in a track and a background image to generate a music visualizer video (MP4) that reacts to the audio in real time — ready to upload to YouTube. Everything runs in your browser, from import to export.
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FreqPrism
Turn sound
into visuals.
Real-time audio visualization, entirely in your browser.
Stemscape
Stereo & frequency stem visualizer
Play back stem tracks in sync and see, in real time, where each part sits in the stereo field and which frequency band it occupies. Useful for checking your mix, and just as fun to watch.
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Your audio never leaves your device
Both apps process everything you load — audio and images — entirely in your browser. No files are ever uploaded to a server.