This app visualizes sound frequencies using your device's microphone. It displays the pitch of your voice and music on an equally-tempered musical scale, with adjustable input sensitivity and up to 60 frames per second.
Soniq Viewer by Yuji Koike


62+ iOS apps & games curated and reviewed
Whether you're new to yuji koike or looking for an upgrade, our curated collection of 62+ iOS apps and games has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.


This app visualizes sound frequencies using your device's microphone. It displays the pitch of your voice and music on an equally-tempered musical scale, with adjustable input sensitivity and up to 60 frames per second.




This music player offers a streamlined iPod-like experience with smart shuffle and search functionalities. Enjoy background playback and customize your sound with reverb and bass boost effects. Control playback easily with your headphones.

This music player starts playing songs from a random position and offers features such as repeat and shuffle by album, control via EarPods, and background playback. It also includes a visualizer with various effects, allowing users to enjoy music with stunning visualizations, discover new ways to experience their music library.


This app generates video files from music in your iPod Library. It's ideal for creating promotional videos of your own compositions, with options for short clips or full song renditions. Rendered videos are saved directly to your device's Camera Roll.


This application offers a music playback experience with features like smart shuffle and search. It includes playback controls for headphones and supports background audio. Enhance your listening with built-in reverb and bass boost effects.


This music player focuses on playing entire albums rather than individual tracks. It offers shuffle and repeat options for both albums and tracks, allowing you to curate your listening experience by album.


This music player allows you to play songs from your local library while simultaneously using a built-in musical keyboard. It offers features like A-B repeat and slow playback for focused listening or practice. Note that it does not support DRM-protected files or iCloud items.


Immerse yourself in a vast collection of voice recordings from popular voice actors, designed to be experienced with headphones for maximum impact. Explore over 4000 unique audio scenarios featuring various character archetypes and enjoy the free content offered.


A simulation game where you nurture and strengthen adorable creatures by feeding them. Explore diverse regions, battle enemies, and discover legendary items. Enjoy automatic resource generation and a variety of unlockable friends and weapons.


This app is a video player for YouTube radio rebroadcast content. It allows users to select and arrange their favorite channels, with features like continuous playback, shuffle, repeat, and a sleep timer. It also includes ranking functions to discover popular and trending videos.




This app aggregates all essential information for a popular monster hunting game. It provides the latest news, comprehensive guides, gameplay videos, and a community forum, all organized for easy access. Customize your view with sortable tabs and discover trending content with ranking features.






Tap the correct Japanese surname as it falls from the sky before it hits the trash can. Avoid tapping incorrect surnames to preserve your lives. The game's difficulty increases with your score.








This app helps elementary school students practice kanji learned from first to sixth grade. Its simple interface allows for independent practice and saving traced kanji screens. It's designed for parents seeking a tool to support their child's kanji learning journey.

