Quick answer
UptimeRobot - UptimeRobot wins for most builders because its free tier covers more monitor types, more integrations, and a broader alerting workflow, while SweetUptime wins only if you want more status pages and server-specific capacity at a lower paid starting price.
How the free tiers compare
These two free tiers solve the same basic job, but they aim at different edges of the monitoring stack. SweetUptime is narrower and more server and status-page oriented: 20 uptime monitors, 20 domain and SSL checks, 10 servers, and 5 status pages on the free plan, with a clean jump to cheap flat paid tiers if you outgrow it. UptimeRobot is the more general monitoring tool. Its free tier covers up to 50 monitors across websites, APIs, ports, pings, keywords, DNS, SSL, and domain expiration, plus multi-location checks, slow response alerts, basic status pages, API access, mobile apps, and up to 5 integrations. The tradeoff is that UptimeRobot’s paid tiers are more about workflow and team scale, while SweetUptime’s paid tiers mostly just raise quotas. If you need breadth and integrations, UptimeRobot is the better starting point. If you mainly need simple uptime coverage and public status pages, SweetUptime is a tighter fit.
SweetUptime vs UptimeRobot free tier, side by side
| SweetUptimeFTV 47 | UptimeRobotFTV 53 | |
|---|---|---|
| Free monitorsUptimeRobot’s free cap is higher and covers more monitor types. | 20 uptime monitors | Up to 50 monitors |
| Free domain and SSL checksUptimeRobot includes DNS, SSL, and domain expiration checks in its monitor mix. | 20 domain and SSL monitors | Included in monitor types |
| Free serversSweetUptime is more explicit about server capacity on the free tier. | 10 servers | Not specified |
| Free status pagesSweetUptime gives a clear count; UptimeRobot describes the pages as basic. | 5 status pages | Basic status pages |
| Monitor interval on free planSweetUptime is faster on the free tier. | 1 minute | 5 minutes |
| Integrations on free planUptimeRobot clearly includes integrations on free. | Not specified | Up to 5 integrations |
| Notify seats on free planUptimeRobot explicitly excludes notify seats on free. | Not specified | No notify seats included |
| Login seats on free planUptimeRobot explicitly excludes login seats on free. | Not specified | No login seats included |
| Data retentionUptimeRobot gives a retention limit on the free tier. | Not specified | 3 months |
After you outgrow the free tier
SweetUptime uses flat pricing after free, starting at $9/month for Mini and rising to $19/month and $29/month before custom contact-sales plans. UptimeRobot also starts flat at $8/month for Solo and $34/month for Team, then moves to an Enterprise plan starting at $64/month with tiered pricing. SweetUptime is cheaper at the entry paid step, but UptimeRobot’s paid plans add team seats, more integrations, and longer retention. Because both are flat through the listed starter plans, there is no usage-based math to work through from the provided data.
When to pick each one
Pick SweetUptime when…
- You are monitoring a mix of websites, APIs, ports, pings, DNS, SSL, and cron-like checks and want that breadth on the free plan.
- You need alerting integrations and want up to 5 integrations without paying first.
- You want a free tier with API access and mobile app support included.
- You are building a small internal monitoring setup where 50 monitors and multi-location checks matter more than status-page quota.
- You expect to grow into team collaboration features like notify seats and login seats later.
Pick UptimeRobot when…
- You mainly monitor websites, servers, and SSL/domain checks and want a simple quota bundle.
- You want more status pages on the free tier, since SweetUptime includes 5 status pages and UptimeRobot free is only basic.
- You prefer a cheaper first paid step, because SweetUptime starts at $9/month versus UptimeRobot Solo at $8/month but with a different feature mix.
- You want straightforward flat pricing as you scale monitors and server counts.
- You care more about server-oriented quotas than broader endpoint types.
Bottom line
For the most common builder use case, UptimeRobot is the better free-tier pick because it gives you more monitor types, more integrations, and a more complete alerting setup before you pay. SweetUptime is the nicer choice if your monitoring is mostly uptime plus servers and status pages, and you want a faster 1-minute free interval with a simple upgrade path. If you are choosing one default tool for a small team, UptimeRobot is usually the safer bet.
Read the full listings: SweetUptime and UptimeRobot. Scores use the FTV methodology at /ftv. Browse more head-to-heads on /compare, or see the top-ranked free tiers on /top.