UptimeRobot vs Fly.io

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

UptimeRobot compared with Fly.io
Detail	UptimeRobot	Fly.io
What it does	Free Website Monitoring Service	Computers for agents
Stage	Established	Established
Founded	Not given	Not given
Based in	SK	Not given
Pricing model	freemium	freemium
Pricing	Not given	Free tier available. Machines billed by the second based on CPU and RAM preset; Sprites metered by CPU-hour and GB-hour for active use; Managed Postgres plans from $38/month. Support tiers from free community to $199/month Premium or Enterprise from $2,500/month. HIPAA compliance available at $99/mo
Key features	Website and HTTP(S) endpoint monitoring Keyword monitoring Ping monitoring Port monitoring Cron job monitoring SSL certificate and domain expiry monitoring DNS record monitoring Multi-location monitoring Incident management tools Real-time status pages	Machines Sprites Private Networking Zero Downtime Deploys Sprites Connectors Granular Routing Monitoring Sprite Block Device
What makes it different	50 monitors free Start monitoring in 30 seconds 20+ integrations including Slack, PagerDuty, Discord Real-time alerts via email, SMS, Slack, and mobile app	Agents get their own Linux computer that checkpoints state automatically Machines boot in under a second and run close to users globally Same primitives scale from side project to production without rewriting infrastructure
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	90 no change since last check	83 no change since last check
Trust Flow (Majestic)	66	39
Citation Flow (Majestic)	66	57
Referring domains (Majestic)	20554	10844

5 details filled in for both companies.

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