Observed arrival · 2026-09-13

Signalarm, the API that can wake your iPhone

signalarm.app Observed source

Editorial interest 84/100 Selection signal · not a rating of the site

Signalarm turns HTTP requests from monitoring systems, scripts, sensors, and other services into scheduled iPhone alarms.

Landing page captured for the 2026-09-13 issue.

Field notes

Signalarm accepts authenticated HTTP requests containing a delay or scheduled time and an alarm title, then registers the result through Apple’s AlarmKit on an iPhone. The homepage demonstrates a one-minute curl request and lists integrations for Grafana, Uptime Kuma, GitHub Actions, Home Assistant, cron, and shell scripts. Its free allowance is 50 registrations per month, while the described Pro tier raises that to 1,000 and adds multiple service tokens.

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○OpenPublic substance visible

$PaidCommerce or pricing visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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