Free: all tools with no sign-up or watermark on audio. Pro: $4.99/month, $1.99 for 7-day pass, or yearly plan (price not specified). Pro adds HQ split, removes watermark from videos, and increases transcription limit from 10 to 60 per hour.
Key features
Synthesize sounds from oscillators and noise layers
Stack multiple layers with individual pitch and envelope controls
Adjust wave shape: sine, triangle, saw, square or noise
Real-time visualization of sound waves
Apply effects: reverb, chamber, echo, chorus, phone filter and crunch
Share sounds via URL link carrying full sound data
Download sounds as MP3 files
Connect with Claude, ChatGPT, Cursor and VS Code via MCP server
Save sounds to personal browser library
No account or installation required
Split songs into voice, drums, bass and other parts
Slow down songs to 50% speed without changing pitch
Change song key by up to 12 semitones
Loop sections and build speed for practice
Transcribe audio and generate subtitles
Identify song name and show lyrics
Mix parts with individual volume controls
Works on phone and desktop in browser with no app
What makes it different
AI assistant integration through MCP server for natural language sound design
Synthesized from scratch with no samples or recordings
Real-time editing with live audio preview while adjusting
Works as notification sounds, ringtones, and in apps without conversion
All processing runs on your device with no file upload to servers
Completely free with no sign-up or watermark on audio
Uses open-source Meta HTDemucs model for splitting
Handles files up to 500MB and 20 minutes long
Works instantly in browser without re-encoding video
Notify Sound
Extractune