TL;DR
Use Studyo in an up-to-date web browser, or through the Studyo apps for iPhone, iPad and Android. Sign in with the same identity to find the same school planner.
Choose your device
On a computer or Chromebook, open Studyo Web.
On a phone or tablet, use your school's installation instructions or the Studyo links on studyo.co.
Keep the browser or app updated. On a school-managed device, ask the school to install updates or allow the required access.
When you are offline
Offline behavior depends on the app and data already loaded. An internet connection is needed for sign-in, synchronization, new school information, online attachments and external services. Do not assume that opening a planner once makes every view or file available offline.
Before travelling, open the information you need while connected. Reconnect and confirm synchronization before signing out, reinstalling or clearing browser data. If recent edits are missing, follow loading and synchronization checks.