Sync podcasts from iPhone to MP3 swim headphones in two minutes
Free AI voice isolator to remove noise from audio and video in your browser, or strip background music with GPU isolation
Stage
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Founded
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Based in
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Pricing model
Freemium
Freemium
Pricing
First sync free. Swimcast Plus: $29.99 one-time lifetime purchase.
Noise cleanup: free and unlimited. AI voice isolation: 1 Credit per minute. Credit packs: 100 Credits for $4.99 (5.0¢ per minute), 250 Credits for $9.99 (4.0¢ per minute). New accounts receive 10 free Credits.
Key features
Find and add podcasts
Choose episodes on iPhone
Sync MP3 episodes to compatible swim headphones
Set playback order before swimming
Works with Shokz OpenSwim, OpenSwim Pro, H2O Audio, FINIS Duo
No Bluetooth required
Two-minute setup
Free browser-based noise cleanup using DeepFilterNet3
AI voice isolation with Mel-Band RoFormer to remove background music
No file upload for noise cleanup mode
Supports multiple audio and video formats
Before and after comparison player
Works on mobile browsers and phones
Downloads as WAV or MP3
10-minute file length limit with 100 MB size limit for AI isolation
Three strength settings: Gentle, Balanced, and Maximum
What makes it different
Direct iPhone to headphone sync without laptop needed
Built specifically for MP3 swim headphones where Bluetooth fails underwater
Designed for quick two-minute pre-swim preparation
Free first sync to test compatibility before paid option
Set and review playback order on iPhone before syncing
Local browser processing eliminates upload costs and per-minute billing for noise cleanup
No account required and no watermark for free noise cleanup
Private processing with automatic upload deletion
Separate voice and background tracks output for AI isolation
Credits never expire with no subscription requirement
Swimcast
VoiceIsolator