# KDJ-ONE > Portable audio workstation app for composing and mixing music on smartphones. (iPhone/iPad app by CyberStep, Inc..) - Source: https://appshunter.io/ios/app/kdj-one/id1385367500 (this page in markdown: same URL + `.md`) - Developer: [CyberStep, Inc.](https://appshunter.io/developer/459682825) - Category: Music, Utilities - Price: Free - Rating: 4.80/5 from 17 App Store ratings · 9 written reviews indexed - Age rating: 4+ - Requires: iOS 10.0 · 82 MB - Languages: American English - Released: 2018-08-12 - Data updated: 2026-06-01 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/kdj-one/id1385367500/reviews.md ## What is KDJ? Introducing the smartphone app of the world’s first portable audio workstation, the “KDJ-ONE”! Compose a song in just 5 minutes on your smartphone device! Compose your own music, or mix existing tracks and use it as your own personal “DJ Machine”. Utilize your imagination and ideas to create your own music as if you were in a professional studio. Boasting a selection of more than 200 preset tracks and over 400 instruments to choose from, you can compose your own music without a musical background. Create a short melody in 5 minutes, or use the mute function and song mode to mix and easily play music like a DJ. ◆Recommended For:◆ Beginners looking to create their own music! People who want to create music on the go! On tour, vacation… and more! People creating music for games and performances! People who want to experience the hardware version of the KDJ-ONE! ◆Functions: Preset Samples: Over 200 tracks! Preset Instruments & Sounds: Over 400 varieties! Modes: Sequencer (Insert different instruments and sounds into your composition) Synthesizer (Synthesize waveforms to form a timbre) Sampler (Record and modify sounds from external audio inputs) Song Mode (Arrange and playback your composition) ◆Languages: Japanese, English ◆Compatibility iOS 10.0 or later ◆URL KDJ-ONE Official Site: http://www.kdj-one.com This app is based on the hardware version of the “KDJ-ONE” and may differ with regards to development and functions. ## Key features - Compose music in 5 minutes - Over 200 preset tracks - Over 400 instruments - Sequencer, Synthesizer, Sampler modes - Song Mode for arrangement - Personal DJ machine functionality ## Recent user reviews (9 of 9) All indexed reviews: https://appshunter.io/ios/app/kdj-one/id1385367500/reviews.md ### 4/5 — Great just one problem *2024-05-15, version 1.0.11* This app is sick, my only question is, HOW DO I GET RID OF THE PRE MADE BEAT SO I CAN MAKE STUFF WITHOUT IT BEHIND IT ### 5/5 — Excellent Tool For game Music *2023-09-02, version 1.0.11* Great tool for writing game music all the essential tools are made available at your fingertips . ### 5/5 — Amazing *2023-08-30* 100’s of presets and sounds to choose from. I wrote a radio quality song using just this app. Amazing! ### 4/5 — 改善してほし。 *2021-06-11, version 1.0.11* ピアノロールを使って、作曲したいけど、音階が分からない。 どの音が高い音でどの音が低い音が分からない。 せめて、音階をイタリア表示か英語表示にして欲しい。 楽器名が英語で読めません。せめて、カタカナで表記して欲しい。(トランペットを使いたいが、英語で読めないし、種類が多いので、どこにあるかわからない。) webサイトで使い方をしらべても、細かい情報が載っていないから、分からない。 それらを改善してくれたら、使いやすいと思います。 勿体ないです。 ### 2/5 — 曲を作りにくい *2020-01-26, version 1.0.11* 他のシーケンサーと異なり、トラックの上にパターンを置いていくのではなく、パターンの中にトラックがあるという形式。このため全体を通して各トラックを編集し、音を重ねていくという作り方が困難。長い曲作りには向かない。 ### 3/5 — デザインを変更したい *2020-01-23, version 1.0.11* 右上のクルクルを回すと下にボタンが当たり誤タップしてしまうのをどうにかしてほしい 十字ボタンで譜面をスクロールするときのモーションが使いづらい あと機体のデザインを替えられる設定を追加してほしい ### 5/5 — Really free *2018-10-03* Please add iaa or auv3 for aum and audiobus support. Coll app tho. A Has potential to be professional but needs iaa and audio unit support ### 3/5 — Cannot use midi keyboard. *2018-09-25* When where will the hardware version be available? I tried both a nanokey wired with a lightning to usb cable and a nanokey studio via midi over bluetooth. Both theses keyboards work with all the other midi compatible apps. The in app midi settings seem to recognize that the nanokey studio has been set up however the select device button has no functionality. Otherwise pretty nice? ### 5/5 — Really fun and cool *2018-08-15* Amazing that this is free, it’s deep and smart and crazy fun. Now add .wav import/export in-device, (Files app), make it skinnable maybe, add some other iOS things, as IAPs even... ## Frequently asked questions about KDJ ### What is KDJ-ONE? KDJ-ONE is a mobile application that functions as a portable audio workstation, allowing users to compose and mix music directly on their smartphones or tablets. ### Can I create music with KDJ-ONE without prior experience? Yes, KDJ-ONE is recommended for beginners and offers over 400 instruments and 200 preset tracks, making it easy to compose music even without a musical background. ### What music creation tools are available in KDJ-ONE? KDJ-ONE features a Sequencer for composition, a Synthesizer for creating timbres, a Sampler for recording external sounds, and Song Mode for arranging and playback. ### Does KDJ-ONE have ads? No, KDJ-ONE does not contain advertisements, providing an uninterrupted music creation experience. ### What devices is KDJ-ONE compatible with? KDJ-ONE is compatible with iOS devices, specifically iPhones, iPads, and iPods running iOS 10.0 or later. ### How often is KDJ-ONE updated? The latest version of KDJ-ONE is 1.0.11, and it was last updated on January 29, 2019. Information on update frequency beyond this is not provided. ### What languages does KDJ-ONE support? KDJ-ONE is available in Japanese and English, catering to a broader international user base. ### What is the user rating for KDJ-ONE? KDJ-ONE has a high user rating of 4.8 stars based on 17 ratings, indicating positive user sentiment towards the application. ## Version history (last 3 releases) ### 1.0.11 — 2019-01-29 Following bugs are fixed on this version. (1) On song mode, a placed clip data (wav,aiff) was ignored. (2) Correcting some unexpected freeze. (3) Sometimes, the keyboard button did not come back after a finger was released from the display panel. ### 1.0.9 — 2018-08-31 The following bug is fixed: incorrect song data was displayed after saving a song data. ### 1.0.0 — 2018-08-10 No release notes. ## More apps by CyberStep, Inc. - [TERAVIT](https://appshunter.io/ios/app/teravit/id6449082565) - [おいでませ、こくりさん](https://appshunter.io/ios/app/id6747338279) - [Natsume Ryoran](https://appshunter.io/ios/app/natsume-ryoran/id6749936778) All apps by CyberStep, Inc.: https://appshunter.io/developer/459682825 ## Related topics [kdj](https://appshunter.io/ios/topics/kdj) --- *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 2026-06-01.*