OnStem vs Stem Splitter

OnStem: AI Music Separation is an on-device AI-powered music separation tool that allows you to split audio tracks into individual stems with privacy and performance in mind. Powered by optimized local inference based on the open-source Spleeter project, OnStem performs all audio processing entirely on your device, without uploading files to any server. Key Features AI Music Separation Separate audio into 2 stems: Vocal and Accompaniment Separate audio into 5 stems: Vocal, Piano, Drums, Bass, and Accompaniment On-Device AI Processing All processing runs locally using on-device AI models No audio files are uploaded or shared Your content stays private on your device Optimized for Long Audio Custom optimizations allow processing of very long audio files Designed for stability and efficiency on mobile devices Multiple Export Formats Export separated tracks as MP3, WAV, M4A, or AAC Easily integrate with other audio tools and workflows Privacy First OnStem is a local-first application. All selected files are processed on your device only. No audio data or personal information is collected, stored, or uploaded. Subscriptions and Purchases OnStem offers both subscription plans and a one-time purchase option. Monthly subscription Quarterly subscription Annual subscription One-time lifetime purchase (where available) Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage or cancel your subscription at any time in your Apple ID account settings. Prices may vary by region and are displayed before purchase. Legal Privacy Policy https://github.com/yangliu-1995/stemify-legal/blob/main/Privacy-Policy/EN.md Terms of Use https://github.com/yangliu-1995/stemify-legal/blob/main/Term-of-Use/EN.md OnStem is designed for creators who value privacy, performance, and on-device AI processing.

Split any song into vocals, drums, bass, and instrumentals — entirely on your iPhone. Stem Splitter is the privacy-first music separator that runs 100% on-device. Import any audio file, separate four clean stems with on-device AI, and export — no upload, no cloud, no waiting in a server queue. ▸ FOUR STEMS, ZERO CLOUD Apple Neural Engine does the work, on your iPhone, in your pocket. • Vocals, drums, bass, and other instruments — separated cleanly • On-device AI — your audio never touches a server • Works fully offline — on a flight, in a studio, anywhere • Imports MP3, M4A, WAV, AAC, and FLAC from Files, Voice Memos, and AirDrop ▸ MULTITRACK STEM PLAYER Hear exactly the mix you want. • Mute and solo each stem with one tap • Adjust per-stem volume in real time • Loop sections to learn covers and rehearse parts • A/B compare your mix with the original track ▸ EXPORT ANYWHERE Stems land where you need them. • Save individual stems as WAV or MP3 • Save your custom mute/solo mix as a single file • Share to Files, Voice Memos, AirDrop, GarageBand, or any audio app ▸ BUILT FOR • Musicians learning covers and rehearsing parts • Producers sampling and remixing tracks • DJs preparing mashups and edits • Karaoke fans and acapella makers • TikTok, Reels, and YouTube creators • Worship teams building backing tracks ▸ PRIVATE BY DESIGN Your audio stays on your device — always. No cloud uploads, no analytics on your tracks, no servers caching your unreleased songs. DRM-protected Apple Music tracks are blocked at import; bring your own files. ▸ PRICING FREE: • 3 separations every month • All four stems included • MP3 export PREMIUM SUBSCRIPTION Stem Splitter Premium is available with the following subscription options: Premium Monthly: $4.99/month Premium Annual: $29.99/year (Save 50%) — includes 7-day free trial Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Terms of Service: https://stemsplitter.bulpara.com/terms Privacy Policy: https://stemsplitter.bulpara.com/privacy ▸ DEVICE SUPPORT Requires iPhone 12 (A14) or later. iPhone 13 Pro and newer deliver the fastest separation times. iPad with M-series silicon recommended for long tracks. — Questions or feedback? support@bulpara.com