djay - DJ App & AI Mixer

What it does

djay transforms your phone or tablet into a full-featured DJ setup. The app allows users to mix tracks from their local library or streaming services, providing tools that cater to both beginners and professionals. Its standout features include real-time stem separation with Neural Mix, an intelligent Automix mode for creating seamless playlists, and a host of professional-grade effects and looping tools.

Where it shines

djay excels by packing professional-grade power into an accessible mobile interface. The multi-layered filtering system is a prime example. At 01:08, the user effortlessly stacks filters for BPM, musical key, and genre, turning a sprawling music library into a perfectly curated setlist. Another powerful moment is the demonstration of Neural Mix at 05:55, where the user isolates vocals and drums from a track in real-time, opening up immense creative possibilities for live remixing. The app also caters to a more casual experience with its highly customizable Automix feature (02:49), which can intelligently manage a party playlist with smooth, user-defined transitions.

UX highlights

Contextual Interfaces: The app offers multiple views tailored to different tasks, from a simple two-deck 'Starter' mode (00:37) to a 'Classic' vinyl view (08:22) and a 'Pro' view with detailed waveforms (08:22).
Advanced Filtering: The ability to stack multiple, precise filters (01:25) is a powerful tool for quickly finding harmonically compatible tracks with the right energy.
Real-time Stem Separation: The Neural Mix EQ (05:55) uses intuitive knobs to control complex AI, making it easy to create acapellas or instrumentals on the fly.
Automix Customization: The Automix feature isn't just a simple shuffle. Users can select specific transition styles and durations (03:04), giving them control over the automated mix.
Integrated DJ School: For beginners, the app includes a DJ School (09:27) with video tutorials, providing in-app education to help users master its features.
Multiple Performance Modes: Beyond the turntables, djay offers a Looper (08:58) and a Sampler (06:12), providing different ways to interact with and create music.

Monetization & growth

The primary monetization strategy is a PRO subscription, which is presented after a very brief onboarding sequence (00:18). The paywall clearly lists the key benefits unlocked, such as Neural Mix and over 1000 loops and effects. It offers a 7-day free trial for the annual plan, which is highlighted with a 'SAVE 40%' tag to encourage commitment. The app uses an Apple Design Award badge (00:06) during onboarding as a form of social proof to build trust before the user hits the paywall.

Who it’s for

djay serves a broad spectrum of users. For aspiring and beginner DJs, it offers an accessible entry point with features like Automix and the DJ School. For professional and experienced DJs, it provides a powerful and portable setup with advanced tools like DVS control (11:11), Neural Mix, and extensive MIDI controller support (11:51). It's also suitable for casual music enthusiasts who just want to create a great playlist for a party without needing to manually mix every track.

Notes & opportunities

The app is incredibly deep, which can be overwhelming. While the onboarding quiz (00:14) asks for the user's experience level, the app defaults to the simple 'Starter' mode for everyone. There's an opportunity to tailor the initial interface more directly to the user's stated skill level, perhaps by guiding 'Pro' users to the more advanced features right away. Additionally, the sheer number of settings and modes could benefit from more in-context tooltips or guided tours beyond the separate DJ School section.