Sonolus is a revolutionary mobile rhythm game platform that acts as an 'engine' for the community. It’s not just a game; it’s a portal that allows you to play various rhythm game styles—from circular 'MaiMai' styles to lane-based 'Project Sekai' styles—all within one app. The level of customization and the fidelity of the audio processing are simply world-class. For rhythm game purists, the low latency and high-refresh-rate support make it a dream come true.
The real power of Sonolus lies in its open-source nature. Users can create their own skins, sound effects, and even entirely new gameplay mechanics. The community-driven servers provide an almost infinite amount of content. It’s a very technical and minimalist app, which might be daunting for casual users, but for the hardcore rhythm game community, it is the most important app on the market today. It is truly the 'VLC player' of rhythm games.
Calling Sonolus a 'game' is a bit of a stretch—it's an engine. And as an engine, it’s actually impressive. For someone who has played everything from DDR to Osu!, I appreciate the technical feat here. The latency is minimal, which is the make-or-break factor for any rhythm title. However, the barrier to entry is high. You have to find servers, import content, and fiddle with settings just to get started.
It lacks any soul of its own. There’s no progression system, no unlockables, and no curated experience. It’s built for people who already know exactly what they want and just need a better way to play it on their phone. It’s a niche product for a niche audience. If you aren't already deep into the rhythm game community, this will feel like looking at a spreadsheet. But for the hardcore, it's a valuable utility. I respect the tech, even if it feels more like software than a game.
Performance: Best-in-class input response time. Optimized for high-refresh-rate screens.
Buy if: You are a hardcore rhythm gamer who wants a universal mobile platform.
Skip if: You want a polished, out-of-the-box experience with a story and progression.
Available on: iPhone, iPad, iPod
Version 1.1.0Thu Feb 05 2026
Sonolus 1.1.0 brings new features, bug fixes, and performance improvements!
Explore the world of rhythm games, connect with other rhythm game lovers, create and share your own levels and replays, and more!
Whether you are playing solo, together with other people, or competing against other people, there is a vibrant world of rhythm games waiting to be discovered!
Requires iOS 13.0 or later. Compatible with iPhone, iPad, and iPod touch.Explore the world of rhythm games, connect with other rhythm game lovers, create and share your own levels and replays, and more!
Whether you are playing solo, together with other people, or competing against other people, there is a vibrant world of rhythm games waiting to be discovered!








Sonolus is a next-generation rhythm game engine designed for performance and flexibility. It provides a robust platform for players and creators to engage with a wide variety of rhythm game mechanics. With its low-latency audio engine and highly optimized graphics, Sonolus offers a professional-grade experience. Users can customize every aspect of their gameplay, from the skin and sound effects to the core game logic itself. Connect to community servers to explore a vast library of user-generated content and experience the future of the rhythm genre.
High-performance, low-latency rhythm engine
Fully customizable skins and sound effects
Support for multiple rhythm game styles
Community-driven content and servers
Professional-grade calibration tools
Sonolus does not come with songs pre-loaded. To play, you must add a 'Server URL' in the settings. These are provided by the community. Once connected, the app will download the necessary assets for the specific rhythm game style you've selected.
For the best experience, go to the audio settings and calibrate your 'Audio Offset.' This ensures that the notes line up perfectly with the music on your specific hardware. On devices with ProMotion, enable high-refresh-rate mode for maximum visual clarity during fast sequences.
Sonolus is the engine used to play charts. Charting usually happens on external PC-based tools and is then uploaded to Sonolus servers.