# Tremor: AI DJ Mixer & Stems — Video Mixing & Vocal Remover > Professional DJ mixer app with AI-powered audio intelligence and controller support. (iPhone/iPad app by MindArray Labs LLC.) - Source: https://appshunter.io/ios/app/tremor-ai-dj-mixer-and-stems/id349058205 (this page in markdown: same URL + `.md`) - Developer: [MindArray Labs LLC](https://appshunter.io/developer/318275405) - Category: Music, Entertainment - Price: Free with in-app purchases - Rating: 5.00/5 from 3 App Store ratings · 24 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 346 MB - Languages: American English, Afrikaans, Arabic, Azerbaijani, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch and 32 more - Released: 2010-01-28 - Data updated: 2026-08-21 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/tremor-ai-dj-mixer-and-stems/id349058205/reviews.md ## What is Tremor? Tremor — Professional DJ Mixer Mix, scratch, and perform with a real DJ engine — not a wrapper around a phone music player. Tremor is built on a custom audio core, hand-tuned neural models running on-device, and a hardware-verified controller path that lets you take an iPhone or iPad seriously, all the way to a real gig. WHY TREMOR • A custom low-latency audio engine designed for DJ work — not adapted from a music player • On-device AI — stem separation, beat detection, key detection, and song structure all run locally. Your music and listening data never leave your device • Hardware-verified controller support — what we list, we test • Multi-channel audio routing usually reserved for desktop DJ software 2-DECK & 4-DECK MIXING 2-deck and 4-deck modes with independent 3-band EQ, filters, and effects. Smooth crossfading with multiple curve types, including an orbital fader for 4-deck blending. AI-POWERED AUDIO INTELLIGENCE • Real-time stem separation — isolate vocals, drums, bass, and other instruments on the fly • Neural beat detection with automatic BPM and downbeat tracking • Musical key detection for harmonic mixing • Mood, energy, and genre classification • Song structure analysis — intro, verse, chorus, drop, outro VINYL SCRATCHING Touch the turntable to scratch with realistic platter physics. Adjustable motor speed, platter feel, smooth inertia, and authentic pause/resume behavior. BEAT SYNC One-tap beat sync locks tempo and phase between decks. Automatic BPM matching powered by neural beat detection. DJ CONTROLLER SUPPORT Hardware-verified support for Pioneer DDJ-FLX2, DDJ-FLX4, and DDJ-FLX10. Customize the mapping of any control through the built-in MIDI Settings. MULTI-ROUTE AUDIO Send master audio and headphone cue to separate channels on a 4-channel USB audio interface, so you can pre-listen with full PFL while your master output plays to speakers. PERFORMANCE FEATURES • 16 hot cue pads per deck • Beat-synced loops and loop rolls • Beat jump • Color FX and Sound FX • Sampler with 16 slots per deck • Video on vinyl — play music videos on the turntable platter STREAMING & SOURCES • Tidal, Apple Music, SoundCloud, and local library • Shazam song identification and lyrics display • AirPlay video streaming • RTMP live streaming to YouTube, Twitch, and Facebook • CarPlay support for in-vehicle playback DESIGNED FOR • DJs learning beat-matching at home • DJs practicing for their next set • DJs playing real gigs — alone, on a controller, or paired with a club system • Live streamers broadcasting to YouTube, Twitch, and Facebook TREMOR PRO SUBSCRIPTION Unlock DJ controller support, Multi-Route Split Output, AI stem separation, and more advanced features with Tremor Pro. Start with a 7-day free trial. • Monthly: $5.99 • Annual: $39.99 (save 44%) Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless cancelled at least 24 hours before the end of the current period. Manage your subscription in Settings → Apple ID → Subscriptions. Privacy Policy: https://mindarray.io/tremor/privacy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Key features - Custom low-latency audio engine - On-device AI for stem separation, beat detection, key detection - Hardware-verified DJ controller support - 2-deck and 4-deck mixing with EQ and effects - Realistic vinyl scratching - Beat sync and automatic BPM matching - Multi-channel audio routing ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Tremor Pro | $5.99 | per month | | Tremor Pro | $39.99 | per year | ## Recent user reviews (10 of 24) All indexed reviews: https://appshunter.io/ios/app/tremor-ai-dj-mixer-and-stems/id349058205/reviews.md ### 5/5 — A Fantastic All-in-One DJ App *2026-07-08* I've been really impressed with Tremor. The interface is clean and easy to navigate while still packing in a ton of professional features. The beat sync and controller support work great, and everything feels smooth and responsive. It's clear a lot of thought went into the app, and I'm looking forward to future updates! ### 5/5 — Serious DJ Software for Mobile *2026-05-14* Tremor feels surprisingly close to real desktop DJ software on iOS. The stem separation and beat sync work really well, and the interface is smooth and responsive. Love the controller support and multi channel audio features. You can tell a lot of thought went into this app. Definitely one of the most impressive mobile DJ apps I’ve used. ### 5/5 — Genuinely original, finally a DJ app that does video *2026-05-13* Been using Tremor for a few hours now and just upgraded to Pro and wow. The video on vinyl feature is something I haven’t seen in ANY other DJ app on the App Store and you can actually play music videos right on the turntable platter while you mix. That alone is worth it. The AI stem separation is incredible too, I can pull out vocals or drums in real time and remix on the fly. Neural beat detection has been spot-on across every genre I’ve thrown at it, even tracks that usually trip up other apps. Pro unlocked a ton for me like stems, 4-deck mixing with the orbital fader, AirPlay video streaming, and the split output so I can finally cue properly on my audio interface. Also love that they kept all the original free features actually free instead of paywalling everything. Small thing, I would love a few more FX options eventually but this is hands down the most creative DJ app I’ve used on iOS. Whoever’s behind this is cooking. ### 1/5 — DON'T GET IT! *2017-07-19* It wouldn't let me get out of the app. I completely turned my phone off and shut it down and hooked it up the the computer and finally I took it in to get fixed. DON'T GET THIS APP!! ### 1/5 — Bad update and no support *2014-06-26* I updated the app recently, most of the earlier features are gone. Sone buttons like the earphone options don't work. Worst of all the support site shows an "error 404"!! ### 1/5 — Volume *2012-06-17* The volume on it doesn't work at all i turned up the volume all the way and nothing happened the volume was all the way up in the app as well I tried plugging in my headphones and nothing happened. I just wasted $20 thanks a lot. Also is it possible to give a refund?! ### 1/5 — Please Help *2011-09-16* I am a firm believer of giving developers the benefit of doubt. However in this case I have found an easy way to work this program. I am trying to enable the headphones feature and there is no place to enable it. Not in the settings nor the app it self. The biggest problem I see with this app the recording does not shut down after the app is closed. Perhaps I am not understanding how this app works, but on the other hand there is no user help anywhere. I will have to give this app just one star until I can find some help with it ### 5/5 — Help *2011-06-20* How in the world do u turn it off it's always saying tremor recording in red can any one help ### 3/5 — Multi touch is bad. *2011-06-04* I try to press 2 or 3 Button seen time but de software no work is to slow. ### 2/5 — Very confusing *2011-05-20* Is there going to be an update? The ratings ware good however the user ability is not as sharp as dj pro ## Frequently asked questions about Tremor ### What is Tremor? Tremor is a professional DJ mixer application designed for mobile devices. It offers advanced mixing, scratching, and performance features powered by a custom audio engine and on-device AI. ### Does Tremor have ads? The provided data does not specify if Tremor contains advertisements. However, it offers a 'Tremor Pro' subscription for advanced features. ### What are the subscription options for Tremor Pro? Tremor Pro offers a monthly subscription for $5.99 or an annual subscription for $39.99, which saves users 44% compared to the monthly plan. ### Can I try Tremor Pro before subscribing? Yes, Tremor Pro offers a 7-day free trial for users to experience the advanced features before committing to a subscription. ### What DJ controllers are supported by Tremor? Tremor has hardware-verified support for Pioneer DDJ-FLX2, DDJ-FLX4, and DDJ-FLX10 controllers. Users can also customize control mappings via MIDI settings. ### How does Tremor's AI work? Tremor's on-device AI handles tasks like real-time stem separation (isolating vocals, drums, bass), neural beat detection for BPM and downbeat tracking, musical key detection, and song structure analysis. ### What music sources can I use with Tremor? Tremor supports streaming services like Tidal, Apple Music, and SoundCloud, as well as your local music library. It also includes Shazam song identification and lyrics display. ### Is Tremor suitable for live streaming? Yes, Tremor supports RTMP live streaming to platforms like YouTube, Twitch, and Facebook, and also offers AirPlay video streaming and CarPlay support. ## Version history (last 5 releases) ### 3.2 — 2026-08-18 STEMS, EVERYWHERE YOU MIX This update makes real-time stem separation dramatically faster, smarter, and rock-solid — even on older iPhones and long DJ edits: • Stems now prepare fairly across all decks and follow your playhead, so the part you're about to play is always ready first • Instant reloads — waveforms and stems for tracks you've played before appear in a fraction of a second • Major stability work for 4-deck sessions and low-memory devices 4-DECK VIDEO MIXING Full-screen video mix on iPhone, per-deck visualizer planes for audio-only tracks, album-art rotation, and recording that follows your deck view — with perfectly synced audio. SAMPLER ONE-SHOTS Pads now fire one-shot by default (hold-to-loop available in Settings). SMARTER TRACK IDENTIFICATION Tremor now fuses what your files say with what the audio says — fixing mislabeled downloads without ever overwriting a correct name, and pulling in verified artwork. Plus: the track-load audio glitch on AirPlay is gone, track repeat is now gapless, and dozens of performance and stability improvements throughout. ### 3.1 — 2026-07-24 Realtime Stems, supercharged • Stem separation starts in about a second — and vocal removal sounds dramatically better from the very first moments, sharpening further as the track plays • Previously separated tracks load their stems almost instantly • Your stem selections now carry over when you load a new track Karaoke-ready lyrics • Synced lyrics with karaoke-accurate word highlighting More for your setup • Microphone talkover with automatic music ducking • 4-channel USB headphone cueing on supported controllers • Improved DJ controller support and LED feedback Fixes • Fixed an audio glitch when loading a new track with stems active • Fixed a rare playback stall after pausing • Many stability improvements under the hood ### 3.0 — 2026-05-13 Version 3.0 — rebuilt from the ground up. INTRODUCING TREMOR PRO Unlock the full DJ experience with a 7-day free trial. Subscribe to enable DJ controller support, Multi-Route Split Output, AI stem separation, and more. All previous free features remain free. NEW • AI stem separation — isolate vocals, drums, bass, and other in real time • Neural beat detection — accurate BPM and downbeat tracking across all genres • Musical key detection for harmonic mixing • Mood, energy, and genre classification • Song structure analysis — intro, verse, chorus, drop, outro mapped automatically • Beat sync — one-tap tempo and phase locking between decks • DJ controller support — Pioneer DDJ-FLX2, FLX4, and FLX10 (Pro) • Multi-Route Split Output — master and headphone cue on separate channels of a 4-channel audio interface (Pro) • Realistic turntable inertia for authentic pause and resume • Video on vinyl — play music videos on the turntable platter • 4-deck mixing with orbital fader • Sampler with 16 slots per deck • CarPlay support • AirPlay video streaming and RTMP live streaming to YouTube, Twitch, and Facebook • Tidal, Apple Music, SoundCloud, and local library IMPROVED • Optimized audio engine for lower latency • New Metal-rendered waveforms and turntable • Redesigned interface ### 2.0 — 2015-09-24 This update from Apple will improve the functionality of this app. No new features are included. Stability improvements and bug-fixes ### 1.9 — 2014-02-24 Redesigned User Interface Revamped Audio Engine Additional DSP Effects Customizable Sound Effects Improved Usability Scalable design for future updates ## More apps by MindArray Labs LLC - [Mic.](https://appshunter.io/ios/app/mic/id377672213) - [Skratcher](https://appshunter.io/ios/app/skratcher/id409667863) All apps by MindArray Labs LLC: https://appshunter.io/developer/318275405 ## Related topics [tremor](https://appshunter.io/ios/topics/tremor) · [tremor ai](https://appshunter.io/ios/topics/tremor-ai) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*