Last updated: September 27, 2026
Quit21 is a behavioral support and self-tracking tool to help you quit smoking or vaping and remain smoke-free. It is educational and behavioral in nature.
Subject to the Apple Media Services Terms and the standard Apple Licensed Application End User License Agreement (EULA), we grant you a personal, non-transferable licence to use Quit21 on Apple devices you own or control.
Quit21 is sold as a one-time paid download at the price shown on the App Store; there is no subscription and no additional in-app purchase. Your payment is processed entirely by Apple. Refunds are handled by Apple at reportaproblem.apple.com.
Nothing in Quit21 is medical advice. Health information in the app reflects general, publicly available population-level guidance and is not a substitute for consulting a qualified healthcare professional about your own situation, including before starting or stopping any medication.
Quit21 is not an emergency service. If you are experiencing a medical emergency or a mental health crisis, contact your local emergency number or an appropriate crisis service immediately.
Do not copy, modify, reverse-engineer, or resell the app or its content.
The app is provided "as is" without warranties of any kind. To the maximum extent permitted by law, we are not liable for indirect, incidental, or consequential damages arising from your use of the app.
These terms are governed by the laws applicable in your jurisdiction of purchase, without prejudice to any statutory consumer rights you may have.