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Uptime.com vs updown.io: catalog facts
Uptime.com	updown.io
Paid Commercial monitoring service with paid plans.	Paid Pay-per-use pricing that scales linearly with check frequency; cards, PayPal, SEPA and…
Android, iOS, Web	Web
Website, API, cron job and real user monitoring in one service Unlimited email, SMS and Slack notifications	Check interval adjustable from 15 seconds to 1 hour Downtime confirmed from two locations before alerting
Hosted only, with no self-hosted option Aimed at business monitoring rather than personal sites	No free tier mentioned Hosted only, with no self-hosted option
Downloadable app, Hosted service	Hosted service
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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