Custodian

Mike Anobile

About this app

Custodian is a private, read-only disk-space visualizer for Android.

Scan your device storage and explore where space is going through a live treemap, sunburst, and 3D city. Drill into large folders, compare on-disk and apparent sizes, and identify unreadable items without deleting or uploading anything.

Features:
• Treemap, sunburst, and 3D city views
• On-disk versus apparent-size analysis
• Folder drill-down and largest-item summaries
• Read-only Android build: deletion is not compiled in
• Offline runtime with no account, ads, analytics, or network permission

To measure shared storage accurately, Custodian asks you to grant Android’s “All files access” permission in system Settings. It uses that access only to read file metadata and calculate sizes on your device. No file names, paths, or scan results leave your device.

What’s new

Corrected the installed launcher icon so it matches the Play listing. Includes reliability and packaging improvements.