¥1,500
App Store で開く
iPhone / iPad 対応
286.5MB
年齢4+
Best Friend for K.O. IIはどんなアプリ？
Best Friend for K.O. IIは、特定のサンプラー機器と連携して管理や編集を行うためのミュージックアプリです。
専用の機材と接続することで、パッドの設定を確認したり新しい音の素材を書き出したりできます。ボタン操作で複雑な和音を構築する機能や、サンプルから特定の楽器の音だけを取り出す編集機能も備わっています。複数のパッドの設定を一括で変更したり、作品全体をバックアップして別の機器へ移行したりする作業もスムーズに進みます。
独自の機材を使いこなし、より高度な楽曲制作を目指すクリエイターに合っています。複雑な設定を細かく調整しながら、自分だけの音作りを追求したい場面で便利です。
アノアプリによる紹介文です。デベロッパー公式の説明はApp Storeでご確認いただけます。
Best Friend for K.O. IIの注目ポイント
機材と連携する管理機能
専用機器と接続すればパッドの設定を一覧で確認しつつ変更できます。素材の書き出しもアプリ上で行えるため、制作の工程がスムーズに進みます。
個別のオーディオ素材の書き出し
各パッドから個別の音を抽出して書き出すことができます。AIによる分離を使わずに、純粋な状態で素材を取り出して制作に取り掛かれます。
複雑な和音を作るMIDI機能
ボタン操作だけでメジャーやマイナーといった和音を構築できます。独自のコード設定を保存して、鍵盤の感度を活かした演奏にも対応します。
特定の楽器だけを抽出する編集
サンプルからドラムやベースなど特定の楽器の音だけを抜き出せます。EQやコンプレッサーなどのエフェクトを適用して、素材を細かく加工できます。
価格履歴
今の価格は1,500円です。過去120日間で最も長く続いた価格と同じです。この間に2回値上げされ、値下げはありませんでした。
アノアプリが独自に収集した価格履歴をもとに分析しています。
- 買い時判定
- 通常価格
- 記録期間
- 120日
- 最頻価格
- ¥1,500
- 記録上の最安値
- ¥1,000
価格更新履歴
| 日付 | 価格 |
|---|---|
| 2026-09-22 | ¥1,500 |
| 2026-08-11 | ¥1,100 |
| 2026-07-08 | ¥1,000 |
ランキング推移
ミュージック（有料）：最終圏内 94位（2026年10月22日）
ユーザーレビュー （当サイト投稿）
まだレビューがありません。最初のレビューを書いてみましょう。
アプリ更新履歴 活発に更新中
Ver 3.4 2026-10-21
New Features and improvements:
- New Backup Browser: Open backups to browse, preview, bounce, and restore, any portion of the backup including scenes, groups, patterns, and samples.
- Change Pad Settings for multiple pads at once.
- Chop a sample across pads in lazy, equal, or transient modes
- Copy copy pads from the Pad Group screen
- Assign multiple samples to empty pad spots from the Sample list
- New multi-sample editor: split the sample into regions and make finer adjustments to crop and loop points
- Convert any sample, recording, or video into a multi-sample, auto-split into notes on supported hardware
- In-app documentation, under App Settings → Documentation
Fixes:
- Pick the recording input from the recording input
- Trim markers sometimes snapped back after a drag
- Waveform markers froze near where they were picked up
- Bank Snapshot pads were unconstrained on macOS
- iCloud-only bounces and MIDI files stalled on tap instead of downloading
- Projects with only a looping sound wouldn't preview
- Undo banner couldn't be dismissed
- Changing play mode matches envelope release with hardware changes
- New Backup Browser: Open backups to browse, preview, bounce, and restore, any portion of the backup including scenes, groups, patterns, and samples.
- Change Pad Settings for multiple pads at once.
- Chop a sample across pads in lazy, equal, or transient modes
- Copy copy pads from the Pad Group screen
- Assign multiple samples to empty pad spots from the Sample list
- New multi-sample editor: split the sample into regions and make finer adjustments to crop and loop points
- Convert any sample, recording, or video into a multi-sample, auto-split into notes on supported hardware
- In-app documentation, under App Settings → Documentation
Fixes:
- Pick the recording input from the recording input
- Trim markers sometimes snapped back after a drag
- Waveform markers froze near where they were picked up
- Bank Snapshot pads were unconstrained on macOS
- iCloud-only bounces and MIDI files stalled on tap instead of downloading
- Projects with only a looping sound wouldn't preview
- Undo banner couldn't be dismissed
- Changing play mode matches envelope release with hardware changes
Ver 3.3 2026-10-16
New Features and improvements:
- Real-time bouncing that captures offline-incompatible sounds like Supertone and effects. All bounces are MIDI sync'd so dropping them in a DAW will line up.
- Record audio as a new sample
- Improved keyboard support in iPad and macOS. Use arrows to navigate, space to preview or select, enter to edit, and shift to multi-select.
- Built-in tuner added to Pad Settings
- Bank Snapshots now include Supertone
Fixes:
- Samples could corrupt if hardware was in Sample mode
- Info banners covered iPad and macOS toolbar buttons
- Default MIDI channel was set to 1 instead of off
- Moving Supertone on Pad Group changed the Supertone slot
- Supertone momentary performance effects would crash hardware if Supertone was sounding
- Real-time bouncing that captures offline-incompatible sounds like Supertone and effects. All bounces are MIDI sync'd so dropping them in a DAW will line up.
- Record audio as a new sample
- Improved keyboard support in iPad and macOS. Use arrows to navigate, space to preview or select, enter to edit, and shift to multi-select.
- Built-in tuner added to Pad Settings
- Bank Snapshots now include Supertone
Fixes:
- Samples could corrupt if hardware was in Sample mode
- Info banners covered iPad and macOS toolbar buttons
- Default MIDI channel was set to 1 instead of off
- Moving Supertone on Pad Group changed the Supertone slot
- Supertone momentary performance effects would crash hardware if Supertone was sounding
Ver 3.2 2026-10-09
New Features and improvements:
- Duplicate a sample from one slot to another -- long press on the Sample List page
- See all patterns for a group
- iPad and MacOS support Logic Pro-style Musical Typing to play Chords
- Select several samples from the Sample List and convert it to a Bank Snapshot
- Improved wav rendering when zoomed in
- See slot number and sample name on the Scenes screen
- iPad and MacOS Sample Lists now support active pad following
- Bounce fader selection hides irrelevant faders
- Move the playhead on bounced audio
- Moved MIDI Channel and BPM to Chords header and reorganized Chords Settings menu
- Pre-build the cache for the active project for performance improvements
Fixes:
- Bounce ignored recorded pitch bends and modulation automation
- Bounce attempted to export Supertone, which is not possible, and could crash or fail the bounce
- Bounce previews took a long time to load and were truncated after 15 seconds
- Bounce rendered some pitch changes sharp
- Offline-created Bank Snapshots trimmed samples to 0 length, so no audio would play
- Dragging to delete samples from Pad Groups or Bank Snapshots made selecting the bottom pads difficult
- Dragging to rearrange pads in Pad Groups or Bank Snapshots would sometimes appear to be reverted
- Scene Fader Automation visibility wasn't retained
- Scene Song Mode could interpret additional scenes as part of the Song
- Hardware memory wasn't updated after deleting samples
- Duplicate a sample from one slot to another -- long press on the Sample List page
- See all patterns for a group
- iPad and MacOS support Logic Pro-style Musical Typing to play Chords
- Select several samples from the Sample List and convert it to a Bank Snapshot
- Improved wav rendering when zoomed in
- See slot number and sample name on the Scenes screen
- iPad and MacOS Sample Lists now support active pad following
- Bounce fader selection hides irrelevant faders
- Move the playhead on bounced audio
- Moved MIDI Channel and BPM to Chords header and reorganized Chords Settings menu
- Pre-build the cache for the active project for performance improvements
Fixes:
- Bounce ignored recorded pitch bends and modulation automation
- Bounce attempted to export Supertone, which is not possible, and could crash or fail the bounce
- Bounce previews took a long time to load and were truncated after 15 seconds
- Bounce rendered some pitch changes sharp
- Offline-created Bank Snapshots trimmed samples to 0 length, so no audio would play
- Dragging to delete samples from Pad Groups or Bank Snapshots made selecting the bottom pads difficult
- Dragging to rearrange pads in Pad Groups or Bank Snapshots would sometimes appear to be reverted
- Scene Fader Automation visibility wasn't retained
- Scene Song Mode could interpret additional scenes as part of the Song
- Hardware memory wasn't updated after deleting samples
Ver 3.1 2026-09-23
New Features and improvements:
- New Offline Library. Build Kits and Bank Snapshots, import and bounce Backups, and manage your library all while disconnected from your hardware.
- New MIDI Importing. Import any MIDI file, map its notes to pads, and record to your EP.
- Duplicate and edit Bank Snapshots. Add new samples, delete existing ones, reorder pads, and edit samples in any of your Bank Snapshots.
- Streamlined editing across the library. Tap any text to edit its name. Tap icons to update them.
- Scene notes accurately reflect swing on off-grid notes.
- Improved MIDI mapping from MIDI bounces. Now viewable in the Library.
- Toggle Fader FX off or on when bouncing.
- All static Fader FX values are drawn in Scenes.
- New samples are autoassigned to its slot range.
- Improved backup and restore performance.
Fixes:
- Bounces ignored Legato Play Mode, causing mono notes to stack
- Pad Settings and Fader FX conflicted in bounces, causing issues with pitch, level, and time stretch
- Bounces with multi-samples only used the first region
- Pad Groups showed outdated pad assignments
- EP-40 connections were unreliable
- Onboarding text was truncated
- New Offline Library. Build Kits and Bank Snapshots, import and bounce Backups, and manage your library all while disconnected from your hardware.
- New MIDI Importing. Import any MIDI file, map its notes to pads, and record to your EP.
- Duplicate and edit Bank Snapshots. Add new samples, delete existing ones, reorder pads, and edit samples in any of your Bank Snapshots.
- Streamlined editing across the library. Tap any text to edit its name. Tap icons to update them.
- Scene notes accurately reflect swing on off-grid notes.
- Improved MIDI mapping from MIDI bounces. Now viewable in the Library.
- Toggle Fader FX off or on when bouncing.
- All static Fader FX values are drawn in Scenes.
- New samples are autoassigned to its slot range.
- Improved backup and restore performance.
Fixes:
- Bounces ignored Legato Play Mode, causing mono notes to stack
- Pad Settings and Fader FX conflicted in bounces, causing issues with pitch, level, and time stretch
- Bounces with multi-samples only used the first region
- Pad Groups showed outdated pad assignments
- EP-40 connections were unreliable
- Onboarding text was truncated
Ver 3.0 2026-09-05
New Features:
- See all of your sequenced notes and fader automation lanes across any Scene or Song.
- Export multi-track audio stems of your Scenes or Song directly from the hardware. Every single pad is isolated using the REAL samples and data, all WITHOUT AI separation.
- Make your own chord presets in the MIDI Controller.
- Split the Keyboard into zones for easier alternate chords positions.
- Add the lower octave to your chord.
- Extract Projects from your System Backups
- Audio Previews of your Project Backups
- A brand new Library for managing and arranging your Backups, Bank Snapshots, and Bounces
- iCloud support that automatically backs up and syncs Best Friend across all of your Apple devices
- Automatic key detection of your samples
- Animated onboarding guides for every screen
Fixes:
- Backups could fail when encountering a corrupted sample
- Undo wouldn't fire when deleting Bank Snapshots or Backups
- MIDI Controller could crash the hardware with too much data
- See all of your sequenced notes and fader automation lanes across any Scene or Song.
- Export multi-track audio stems of your Scenes or Song directly from the hardware. Every single pad is isolated using the REAL samples and data, all WITHOUT AI separation.
- Make your own chord presets in the MIDI Controller.
- Split the Keyboard into zones for easier alternate chords positions.
- Add the lower octave to your chord.
- Extract Projects from your System Backups
- Audio Previews of your Project Backups
- A brand new Library for managing and arranging your Backups, Bank Snapshots, and Bounces
- iCloud support that automatically backs up and syncs Best Friend across all of your Apple devices
- Automatic key detection of your samples
- Animated onboarding guides for every screen
Fixes:
- Backups could fail when encountering a corrupted sample
- Undo wouldn't fire when deleting Bank Snapshots or Backups
- MIDI Controller could crash the hardware with too much data
Ver 2.8 2026-08-25
New Features:
- MIDI Controller with a Chord Builder plus pitch, modulation, and velocity parameters
- MIDI arpeggiator with 4 modes, synced to the hardware clock
- Octaver effect to add an octave up or down layer to your sample
- Navigation double-tap shortcuts that toggle between: individual Pads settings and Pad Groups; Samples browse and select mode; and Backups and App Settings.
- Increased the compressor attack range from 2ms to 10ms
Fixes:
- Wav displays made vertical scrolling difficult, especially on multi-sample editing
- Pad Performance mute and mute groups animate opacity instead of pad colour
- The compressor distorted audio previews
- MIDI Controller with a Chord Builder plus pitch, modulation, and velocity parameters
- MIDI arpeggiator with 4 modes, synced to the hardware clock
- Octaver effect to add an octave up or down layer to your sample
- Navigation double-tap shortcuts that toggle between: individual Pads settings and Pad Groups; Samples browse and select mode; and Backups and App Settings.
- Increased the compressor attack range from 2ms to 10ms
Fixes:
- Wav displays made vertical scrolling difficult, especially on multi-sample editing
- Pad Performance mute and mute groups animate opacity instead of pad colour
- The compressor distorted audio previews
Ver 2.7 2026-08-18
Just bug fixes this time!
- Drag and drop pads to rearrange is now reliable for both samples and Supertone
- Sample name is now displayed on Sample Edit page
- Last imported location can now be manually set
- Performance improvement for pad playing animation
- Drag and drop samples to far slots is now reliable
- Pan knob filled from the left instead of the centre
- Drag and drop pads to rearrange is now reliable for both samples and Supertone
- Sample name is now displayed on Sample Edit page
- Last imported location can now be manually set
- Performance improvement for pad playing animation
- Drag and drop samples to far slots is now reliable
- Pan knob filled from the left instead of the centre
Ver 2.6 2026-08-10
New features and improvements:
- Refreshed design and dedicated device themes
- Universal iPad and MacOS support with improved landscape screens for iPhone
- Mute and unmute individual pads
- Apply performance effects to individual pads: mute, pitch up, pitch down, reverse
- Drag and drop pads to reassign them across groups
- Drag pads to reorder Bank Snapshots
- Drag and Drop support for file importing
- Skip a file during multi-import so you don't need to discard the entire batch
- New Preferences Screen
Fixes:
- Last opened folder was forgotten when importing samples
- Delay XY Grid drag response was delayed
- Refreshed design and dedicated device themes
- Universal iPad and MacOS support with improved landscape screens for iPhone
- Mute and unmute individual pads
- Apply performance effects to individual pads: mute, pitch up, pitch down, reverse
- Drag and drop pads to reassign them across groups
- Drag pads to reorder Bank Snapshots
- Drag and Drop support for file importing
- Skip a file during multi-import so you don't need to discard the entire batch
- New Preferences Screen
Fixes:
- Last opened folder was forgotten when importing samples
- Delay XY Grid drag response was delayed
Ver 2.5 2026-08-01
New features and improvements:
- Stem Splitter. Extract drums, bass, vocals, guitars, and other instruments from your samples then use them in isolation or blend them together in a new mix.
- Improved Preview playback peformance. Preview will no longer stop when changing fidelity, repitch, normalize, and other values.
Fixes:
- Compressor attack and release ranges were off by a decimal point. Now attack = .1ms -> 2ms; release = 40ms -> 1000ms.
- Double tap effects faders to reset.
- When sample was reversed playhead played backwards, which was technically showing forward play. Now playhead always begins from the left.
- Deleted samples no longer re-appear after delete.
- Prevented backup attempts across devices, which could fault the memory.
- Stem Splitter. Extract drums, bass, vocals, guitars, and other instruments from your samples then use them in isolation or blend them together in a new mix.
- Improved Preview playback peformance. Preview will no longer stop when changing fidelity, repitch, normalize, and other values.
Fixes:
- Compressor attack and release ranges were off by a decimal point. Now attack = .1ms -> 2ms; release = 40ms -> 1000ms.
- Double tap effects faders to reset.
- When sample was reversed playhead played backwards, which was technically showing forward play. Now playhead always begins from the left.
- Deleted samples no longer re-appear after delete.
- Prevented backup attempts across devices, which could fault the memory.
Ver 2.4 2026-07-22
New in v2.4:
- Brand new effects! EQ, Compression, Distortion and Saturation, Phaser, Chorus, Tremolo, Delay, and Reverb
New in v2.3:
- Create Project and System backups. Restore directly from Best Friend. Import your pre-existing backups to keep everything all in one place.
- Converted .epbank to an archive file. On your computer, rename it to .zip, unzip it, and get access to the wav files.
- Sample List playback performance improvements
- Data transfer performance improvements
- Audio, .pak, .ppak, and .epbank files will prompt to open directly in Best Friend
- Reset waveform zoom between sample changes
- Brand new effects! EQ, Compression, Distortion and Saturation, Phaser, Chorus, Tremolo, Delay, and Reverb
New in v2.3:
- Create Project and System backups. Restore directly from Best Friend. Import your pre-existing backups to keep everything all in one place.
- Converted .epbank to an archive file. On your computer, rename it to .zip, unzip it, and get access to the wav files.
- Sample List playback performance improvements
- Data transfer performance improvements
- Audio, .pak, .ppak, and .epbank files will prompt to open directly in Best Friend
- Reset waveform zoom between sample changes