title: Traffic Alarm App: An Alarm That Tells You When to Leave (2026)
url: https://boardspy.site/compare/traffic-alarm-app/
type: Article
dateModified: 2026-10-09
publisher: BoardSpy
quick_answer: Quick answer: BoardSpy is a traffic alarm app: it rings an alarm when it is time to leave for your saved commute or a calendar event, based on live traffic, and the alarm keeps ringing until you tap Stop or Snooze (App Store · Google Play). Waze and Apple Calendar can send a traffic-based time-to-leave notification, but not an alarm. BoardSpy does not move your wake-up alarm. It alarms you when it is time to leave.
primary_keyword: traffic alarm app
keywords[6]{term}:
  traffic alarm app
  app that alarms you when to leave based on traffic
  alarm based on traffic
  commute alarm app
  time to leave alarm
  alarm clock that adjusts for traffic
faqs[4]{q,a}:
  Is there an app that alarms you when to leave based on traffic?,Yes. BoardSpy rings an alarm when it is time to leave for your saved commute or a Google Calendar event, based on live traffic, and keeps ringing until you tap Stop or Snooze (App Store (https://apps.apple.com/us/app/commute-alerts-traffic-alarm/id6777167408), Google Play (https://play.google.com/store/apps/details?id=site.boardspy.app)). OnTimer does this on iPhone for calendar events with its paid Time To Leave feature.
  Is there an alarm clock that wakes you up earlier if traffic is bad?,Not reliably in mainstream apps. A practical setup is to set your wake-up alarm for the earliest leave time you would accept, then let a leave-time alarm such as BoardSpy decide when you actually walk out the door.
  Does Waze have a traffic alarm?,Waze sends a Time to leave notification for planned drives and synced calendar events with a full address, based on live traffic. It is a notification rather than a ringing alarm, and it is not supported on Android Auto or CarPlay.
  What is the difference between a traffic alarm and a traffic notification?,A notification appears once and can be swiped away or silenced by Focus or battery settings. An alarm rings and waits for you to stop or snooze it, which makes it much harder to miss when it is time to leave.
citations[6]{name,url}:
  Waze Help — Get a reminder when it's time to leave,https://support.google.com/waze/answer/7502125
  OnTimer — calendar alarm app for iPhone,https://www.ontimer.app/
  Hey OnTime — product page and FAQ,https://heyontime.com/
  Apple Support — Change Calendar settings on iPhone,https://support.apple.com/guide/iphone/change-calendar-settings-iphc37be2016/ios
  BoardSpy — worst day of the week for traffic,https://boardspy.site/blog/worst-day-of-week-for-traffic/
  BoardSpy — best apps that tell you when to leave,https://boardspy.site/compare/best-leave-time-apps/
internal_links[7]{label,url}:
  Google Calendar,https://boardspy.site/blog/google-calendar-time-to-leave-not-working/
  Apple Calendar,https://boardspy.site/blog/apple-calendar-time-to-leave-not-working/
  Waze,https://boardspy.site/blog/waze-planned-drive-notification-not-working/
  worst day for traffic,https://boardspy.site/blog/worst-day-of-week-for-traffic/
  best apps that tell you when to leave,https://boardspy.site/compare/best-leave-time-apps/
  best calendar alarm apps,https://boardspy.site/compare/best-calendar-alarm-apps/
  leave-time app with weather alerts,https://boardspy.site/compare/leave-time-app-with-weather-alerts/