Terms of service

Using the meter

The meter and its visual modes are free to use in classrooms, schools and at home. You don’t need an account.

Not a measuring instrument

The meter is a classroom management aid. Browser microphones are not calibrated, so the levels it shows are relative and can differ between devices by ten decibels or more, even after a phone-meter correction. Don’t use it for workplace noise compliance, hearing-safety decisions or any situation where an accurate sound level matters.

Your responsibilities

You decide when the microphone is on. Please follow your school’s rules about microphones and classroom technology, and tell students and families about the tool if your school asks you to.

Provided as is

We work to keep the meter available and accurate, but we provide it as is, without warranties of any kind, and we may change or discontinue features. To the extent the law allows, we aren’t liable for losses that come from using it.

Accounts

You only need an account for Pro. Keep your password to yourself; you are responsible for what happens in your account. An account is for one teacher.

Pro subscription

• Price. Pro costs $36 a year (US dollars), plus any sales tax shown at checkout. Payment is taken by Stripe; we never see your card number.
• Renewal. Pro renews automatically each year at the price shown on the Pro page at the time. If the price changes, we will email you at least 30 days before your renewal.
• Cancelling. You can cancel any time from your account. Pro keeps working until the end of the year you have paid for, and then does not renew.
• Refunds. If Pro isn’t right for you, email us within 14 days of a payment (the first year or a renewal) and we will refund it in full. After 14 days, payments are not refunded, except where the law requires.
• When Pro ends. The free tools keep working, and your classes stay on the computers you used. Data synced to your account can still be downloaded or deleted from your account page, or deleted on request by email.

Student data

The class tools let you type class names, students’ first names and keep-apart pairs. Only enter what you are allowed to under your school’s rules; first names or initials are enough. With Pro, we store that information only to provide the service to you: we don’t sell it, use it for advertising, or build profiles of students. You can download or delete it from your account page. Pictures you add to the custom meter are never uploaded.

Fair use

Don’t try to break, overload or scrape the service, resell it, or use it to store anything other than classroom information.

Changes

If we change these terms, we will update the date at the top of this page.

Contact

Questions about these terms: hello@classroomnoisemeter.org.