Free browser-based audio tools for finding and changing song key and BPM
On-device text-to-speech for Mac that turns anything you're reading into audio you can listen to
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Pricing model
Freemium
Paid
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
$4.99 one-time purchase with all minor updates included. 14-day free trial available.
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
Select text from any app and add to queue with ⌥⌘L or right-click
14 built-in voices with optional HD voice for natural-sounding speech
Playback speeds from 0.5× to 2× with pitch preservation
Organized library with tags, notes, and resume-where-you-left-off
Menu bar control for playback without leaving current app
Sync queue and audio to iPhone through private iCloud
All processing on-device with no uploads or accounts required
Works fully offline on your Mac
Text cleaned up for listening with paragraphs and pauses intact
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
Entirely on-device with no uploads, no accounts, and no cloud servers
One-time $4.99 purchase with perpetual license and all minor updates included
Free iPhone companion app with iCloud sync through your own private cloud
Designed for accessibility including dyslexia, low vision, ADHD, and eye strain
Key & BPM Lab
Orate