Hi Geert,

Yes, you're spot on — in Odoo 15, the separate "Timesheet App" menu entry (the mobile-style preview/interface that was available directly in the backend web client in Odoo 14) has been removed. It's now fully integrated into the standard Timesheets module, with no dedicated mobile preview option in the web backend anymore.

The native Android/iOS apps still handle mobile entry independently, and the core web timesheet features (grid, list, etc.) remain available for desktop use.

If you're after a simple, browser-based mobile-friendly timesheet entry (e.g., responsive on phones/tablets without installing the native app), check out this community module that provides a web-based mobile timesheet interface: https://probuseappdemo.com/blog/technology-4/a-secure-one-tap-attendance-timesheets-works-on-android-iphone-tablet-any-device-1613