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SIGNL4ilert
Paid

Commercial subscription service; see the SIGNL4 website for plans.

 Paid

Paid service with a free 14-day trial.

Android, iOS, Web Android, iOS, Web
  • Alerts by push, text, voice and email with escalation
  • On-call scheduling and call routing in one service
  • Alerts via push, SMS, voice call and messengers
  • On-call scheduling, incident management and status pages in one service
  • Hosted commercial service rather than self-hosted software
  • Aimed at teams and organisations, not individuals
  • Hosted service only
  • Paid after the trial
Downloadable app, Hosted service Downloadable app, Hosted service
Closed source Closed source
License not stated License not stated
Account needed Account needed
Not stated if it works offline Needs internet

Checked October 1, 2026

Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.