> Draft for review. The shared contact form and in-app feedback still require product-specific delivery verification.
DrumsCore is an iPad app for people who only need to write drum charts. Choose which drum plays and when on the grid, listen to the built-in drum sounds, and refine your chart step by step. You can practice with the chart you make. The Mac Catalyst and iPad versions are planned to launch together. You can also find instructions in Basic Guide in the app's settings.
Play the sample and change a few notes
Tap the sample row in the library to open Input. Press Play to check the sound and notation, then stop and change a few notes on the grid. Play again to hear the difference. The current short sample is separate from the dedicated song and transcribed chart planned for a future sample.
To practice, tap the play icon beside the sample in the library. Stop playback before selecting measures. In Pages or Wrapped, hold a measure and drag across the range. Enable Repeat and press Play.
Add your song and audio
Use the add-song action, set tempo and time signature, and enter notes in Input. Add audio from Audio Tracks after opening the song. You can review and apply a BPM estimate. If the audio and click do not line up, listen as you adjust BPM and timing offset.
Automatic transcription and stem separation are not included. Use audio and charts that you have the rights to use, copy, and share.
Free and Pro
Free includes three songs (including the sample), including archived songs. You can edit or delete the sample. Deleting it frees one song slot; duplicates also count as songs. Note entry, editing, practice, audio, speed, and song length have no additional Free limits.
Pro adds unlimited songs, PDF/MIDI/editable-song/library-backup export, and iCloud sync. When Pro expires, songs on your device remain editable and playable. Adding songs is restricted at three or more songs, including the sample; export and sync stop.
If a purchase is not recognized
Check that you are using the Apple Account used for the purchase, then restore purchases from the Pro section in settings. See the purchase screen for price and billing period. Follow Apple's instructions to manage or cancel a subscription or request a refund .
Sync and audio
iCloud sync requires Pro, an iCloud account, and available storage. Song data and audio files are handled separately; choose audio transfers from Audio Tracks. Sync pauses while a song is open for editing. Return to the library when you finish editing and check the sync status in settings. Network and download conditions can delay updates.
Contact
The app includes a Send Feedback form in settings. Describe the steps, the expected result, what happened, and your app version. Name and email are optional. Do not include passwords, payment details, or audio you do not have permission to share.
An alternative contact channel for people who cannot open the app, and delivery to the DrumsCore feedback destination, must be confirmed before publication. No response-time guarantee is offered.
Operator and shared contact channel
The operator is TOMOSHIBI LLC. See company information and the TOMOSHIBI APPS contact form . Select “TOMOSHIBI APPS site” and include “DrumsCore” in your message. Enter your name and email only if you request a reply.
Draft verification status (October 10, 2026)
The primary device is iPad; the Mac Catalyst and iPad versions are planned to launch together. Existing decisions on the operator, shared contact channel, retaining inquiries only as needed and deleting unneeded personal information remain in place. Canon records dated September 30 report the standard Apple EULA shown in App Store Connect, GA retention settings, the Sentry US region, and the user's confirmation of relay delivery. These are dated records, not administration settings reverified in this work. In-app delivery on physical devices, SDK retention and deletion operations, the effective date, and public URLs remain separate checks. A dedicated sample song and transcribed data are planned; materials, rights, and integration are not complete.
