Free browser-based audio tools for finding and changing song key and BPM
AI screen recorder that fixes how you sound
Stage
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Founded
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Pricing model
Freemium
Free trial
Pricing
Free plan includes Key & BPM Finder and Changer, Audio Cutter and Joiner, BPM Tapper and Metronome, Voice Recorder, and local processing tools with files saved for 6 hours. Plus plan: $9.90/month with 1,000 credits per month and files saved for 7 days. Pro plan: $19.90/month with 2,500 credits per m
Free 7-day trial with unlimited screen recording and 60 seconds of AI Accent Change. Cadence Pro: $19.00 per month (or $16.58 per month annually), includes unlimited screen recording, 30 minutes total of AI functions per month, and 100GB cloud storage.
Key features
Detect song tempo, musical key, scale and Camelot code
Change key and BPM independently and export as WAV
Cut and join audio segments
Record voice and tap beat timing
Practice with online metronome
Remove vocals from songs
Split songs into instrument stems
Enhance audio quality with AI
Convert audio to editable MIDI
AI Accent Swap - transform voice into cleaner accent while keeping pace and tone
Screen recording of any tab, app, or full screen with markup and cursor highlights
AI-generated captions with word-by-word highlighting
AI Avatar generation for presentations without camera
Video trimming, cutting, and cropping in editor
Upload and layer custom audio over recordings
Language translation into 25+ languages
Cloud storage with 100GB capacity for Pro users
Shareable links for videos with privacy controls
What makes it different
Process audio locally in browser without uploading to servers
No file storage or account required for free tools
All free tools with privacy-first design
Direct export from browser without server processing
One-click workflow combines recording and voice fixing without re-recording
Preserves emotion, pacing, and pauses while swapping accent
Local processing keeps recordings and voice data on your device for privacy
Works on low-end devices without lag or expensive microphone needed
No account wall to get started - install and record immediately on free plan
Key & BPM Lab
Cadence