Klasumi
Klasumi Go · Support

Help for your next session

Set up the timer, adjust quiet mode and restore your Full pack.

Updated: 22 October 2026

Set up a session

  • Choose a duration and an available theme. Rewards are optional.
  • Tap Take off to begin. Pause stops the session, Continue resumes it, and Restart returns to the beginning.
  • The regular timer works without microphone permission.

Adjust quiet mode

Enable Travel in silence and use Test microphone to set a suitable noise threshold for your classroom. The meter is a reference for ambient noise; this app is not a professional sound level meter.

After noise breaks the silence, Perfect silence requires at least five calm seconds. If microphone access is unavailable, switch quiet mode off to use the regular timer.

If you previously denied microphone access, review the permission in your device settings. Noise is processed in memory; measurement stops when you pause or leave the app.

What is free

Space, a timer from 1 to 180 minutes, and optional rewards. Turning on quiet mode limits that session to five minutes. Sessions can be repeated; there is no daily quota.

Full pack and restoration

A one-time purchase unlocks all eleven themes, quiet sessions up to 180 minutes, and crew mode. The purchase screen displays the price for your Apple Account region. There is no subscription.

If you already own the pack, open Explore the full pack near the bottom of setup, then choose Restore purchases using the same Apple Account you used to buy it. Restoration does not make a new purchase.

If purchasing is unavailable, check your connection and try again. If you paid but cannot restore access, contact support without sending payment details.

Goals and boosts

With the pack active, open Crew mode, set a goal —such as reaching a particular exercise— and tap Boost when a student achieves it. Undo corrects the last tap. You do not need to enter student names.

Interruptions and motion

The app pauses when it leaves the active screen. After a call or audio interruption, return and tap Continue. Animations respect the device’s Reduce Motion setting.

Mission speeds and distances are fictional adventure elements, not physical measurements.

Contact support

Email support with your device model, iOS or iPadOS version, and a description of what happened. A screenshot can help if it contains no student data.

Email support

Do not include student names, photographs, voices or other personal data. Do not send passwords or banking details. This link opens your email app; you decide whether to send the message.