UptimeRobot Free Plan Limits in 2026: What You Actually Get

TL;DR: UptimeRobot's free plan gives you 50 monitors checked every 5 minutes — a worst-case detection gap of 299 seconds. Since December 2024, commercial use is explicitly banned under their Terms of Service. If you're running a SaaS or any revenue-generating project on the free plan, you're already in violation. Here's the full breakdown and what the alternatives actually offer.

If you signed up for UptimeRobot's free plan a few years ago and never looked back, there's something you probably missed.

In October 2024, UptimeRobot updated their Terms of Service with enforcement beginning December 1, 2024: the free plan is now restricted to personal, non-commercial use only. Business use, commercial projects, client work, or any revenue-generating application is explicitly prohibited. Violators risk account suspension.

That means most indie SaaS founders monitoring their products on the free plan are now technically non-compliant — and have been for months.

This article covers the full picture: what the free plan actually includes in 2026, which limits matter in practice, the upgrade pricing trap most people walk into, and how it compares to alternatives that still allow commercial use.

What the UptimeRobot free plan actually includes

Here's the complete spec list, verified against the official pricing page as of 2026:

| Feature | Free Plan | |---|---| | Monitors | 50 | | Check interval | 5 minutes (fixed) | | Monitor types | HTTP(S), Keyword, Ping, Port | | Alert contacts | Email only | | Third-party integrations | 5 of 12 available | | Status pages | 1 (no custom domain) | | Data / log retention | 3 months | | API access | Yes (rate-limited to 10 req/min) | | Maintenance windows | No | | SMS / voice alerts | No (credits sold separately) | | Team seats | No (single user only) | | Two-factor authentication | No | | Commercial use | Prohibited since Dec 1, 2024 |

50 monitors sounds generous — and it is, for the right use case. If you're monitoring personal projects, homelab services, or open-source tools, the free plan covers a lot of ground. If you're monitoring a SaaS product with paying customers, you need to read the rest of this carefully.

The 5-minute interval problem

The check interval is the most important number on that table, and it's the one that gets glossed over in the marketing copy.

A 5-minute check interval means UptimeRobot polls your URL once every 300 seconds. If your site goes down one second after a check completes, it won't be detected for another 299 seconds. That's nearly five full minutes of undetected downtime before any alert fires.

For context: Cockroach Labs' State of Resilience 2025 found the average outage lasts 196 minutes before resolution, and 41% of organizations report that customers detect the problem before their internal monitoring does. Five-minute polling doesn't close that gap — it's part of why the gap exists.

This matters most for SaaS products where users are actively working. A checkout flow that's been broken for four minutes and fifty-eight seconds before your first alert fires is four minutes and fifty-eight seconds of users hitting errors, abandoning sessions, and opening support tickets.

The paid Solo plan starts at $7/month (annual billing) and bumps the interval to 60 seconds. The Enterprise plan reaches 30 seconds. The free plan's 5-minute interval is fixed and non-negotiable.

The December 2024 change most SaaS founders missed

This is the update that hit hardest — and the one with the least visibility.

In October 2024, UptimeRobot updated their Terms of Service effective December 1, 2024. The restriction: the free plan is for personal and non-commercial use only. The definition matters: any project that generates revenue, monitors a paid product or service, serves business clients, or is operated by a for-profit entity requires a paid plan.

The announcement landed on Hacker News under the thread title "UptimeRobot offers a fake free plan" — thread #42244667. The community reaction was direct. Developers who had relied on the free tier for years found themselves suddenly non-compliant. The thread drew hundreds of comments from founders who had been silently using free UptimeRobot monitors on production SaaS products.

What's exempt: open-source projects, educational use, and nonprofits are specifically carved out from the commercial use restriction. Everything else falls under it.

What's at risk: account suspension without prior notice for accounts found violating the ToS.

The limits nobody mentions

Beyond the interval and the commercial ban, there are constraints that don't surface in the headline feature comparison:

No Slack, Discord, or webhook alerts. The free plan includes 5 of UptimeRobot's 12 available integrations — and the integrations most developers actually use aren't in that 5. Slack, Discord, webhooks, PagerDuty, and Zapier are all gated behind the Team plan at $29/month. On free, you receive email alerts only.

No maintenance windows. Deploying at 2am means absorbing a flood of false-positive downtime alerts. There's no way to suppress alerts for a scheduled maintenance window without upgrading to a paid plan.

API rate-limited to 10 requests per minute. Paid plans reach 5,000 req/min. If you're building any integration, custom dashboard, or automation on top of UptimeRobot's API, the free limit becomes a hard ceiling very quickly.

3-month data retention. For SLA reporting, trend analysis, or reviewing what happened in an incident from last quarter, 90 days of log history is a short window. The Solo plan extends this to 12 months.

No two-factor authentication. 2FA is gated behind the Team plan. For teams with any compliance requirements or security-conscious customers, this is a gap.

1 status page, no custom domain. You get one status page with UptimeRobot branding on their subdomain. Custom domains and white-labeling are Team plan features at $29/month.

The upgrade trap — read this before you pay

Here's the part that catches people by surprise.

The base Solo plan costs $7/month (annual billing) and gives you 10 monitors at 60-second intervals. Ten. That's fewer monitors than the free plan's 50.

To match the free plan's monitor count — 50 monitors — with 60-second intervals, you're looking at approximately $13–15/month on the Solo tier, not $7. The pricing within the Solo tier scales by monitor count:

| Monitors | Annual Price | |---|---| | 10 monitors | $7/mo | | 20 monitors | ~$9/mo | | 50 monitors | ~$13–15/mo |

The Solo base tier is priced to look cheap, but the entry price delivers fewer monitors than you already have for free. Monitor parity plus faster checks costs roughly 2× the advertised entry price. Factor this into your upgrade math before assuming it's a $7 decision.

How free plan competitors compare

BetterStack

• 10 monitors + 10 heartbeat monitors
• Check interval: up to 30 seconds (6× faster than UptimeRobot free)
• 1 status page included
• Slack and email alerts
• Commercial use: allowed
• First paid tier: $29/month

Best for: fewer but more critical endpoints where detection speed matters and commercial use is required.

HetrixTools

• 15 uptime monitors + 15 server monitors
• Check interval: 1 minute (5× faster than UptimeRobot free)
• Unlimited public status pages
• 4 monitoring locations
• Unlimited log history
• Commercial use: allowed
• Caveat: must log in every 90 days or monitors are paused

Best for: teams that want the most monitoring capability on free and can manage the login requirement.

StatusCake

• Unlimited uptime tests
• Check interval: 5 minutes (same as UptimeRobot)
• Email alerts only
• Commercial use: allowed
• No monitor cap

Best for: high monitor counts with no commercial restriction, accepting the same slow interval.

Stillup

• 3 monitors
• Check interval: 1 minute
• Public status page included
• Slack and email alerts
• Commercial use: allowed
• Built for indie SaaS founders

Best for: a single SaaS product — fewer monitors but the right feature set: 1-minute checks, a status page, and Slack alerts without a paid plan.

Frequently asked questions

Is UptimeRobot free in 2026? Yes, but with material restrictions. The free plan includes 50 monitors at 5-minute check intervals and is limited to personal, non-commercial use only since December 2024. Any revenue-generating project, business, or commercial service requires a paid plan starting at $7/month.

What is the check interval on UptimeRobot's free plan? Five minutes (300 seconds), fixed. There is no way to increase check frequency without upgrading. The Solo paid plan starts at $7/month and provides 60-second intervals. The Enterprise plan reaches 30-second intervals.

Can I use UptimeRobot free for my SaaS? No, not as of December 1, 2024. UptimeRobot's Terms of Service now explicitly restrict the free plan to personal, non-commercial use. Commercial applications, business services, and revenue-generating projects require a paid plan. Account suspension is the stated consequence for violations.

Does UptimeRobot free include Slack alerts? No. The free plan includes 5 of UptimeRobot's 12 integrations — email is included, but Slack, Discord, webhooks, PagerDuty, and Zapier all require the Team plan at $29/month.

What's the best free alternative to UptimeRobot for a SaaS? For a single SaaS product: Stillup (3 monitors, 1-minute checks, status page, Slack alerts, commercial use allowed). For unlimited monitors: StatusCake (5-minute checks, commercial use allowed). For fastest checks: BetterStack (10 monitors, 30-second checks, commercial use allowed). For the most generous feature set: HetrixTools (15 monitors, 1-minute checks, unlimited status pages — requires 90-day login).

Sources: UptimeRobot Pricing (official, 2026) · UptimeRobot API Documentation · UptimeRobot Terms of Service (December 2024 update) · Hacker News #42244667 "UptimeRobot offers a fake free plan" · LowEndTalk discussion thread · BetterStack Pricing (2026) · HetrixTools Pricing (2026) · StatusCake Pricing (2026) · Cockroach Labs State of Resilience 2025