Most developers need solid uptime monitoring well before they can justify paying for it. The good news: the free tiers of today's tools have gotten genuinely useful. The catch: "free" means something very different depending on the tool — some limit monitor count, some limit check frequency, and most limit you to monitoring from a single geographic region.
This post covers the six tools worth evaluating in 2026. The goal is an honest look at what each free tier actually includes, where each one falls short, and which tool gives you real multi-region coverage without handing over a credit card.
Quick Comparison
| Tool | Free monitors | Check interval | Multi-region | Status page | Best for |
|---|---|---|---|---|---|
| Nines | 7 | 5 min | Yes (free) | Yes | Solo devs who want multi-region free |
| UptimeRobot | 50 | 5 min | No | Yes | Teams needing volume |
| Better Stack | 10 | 3 min | No (paid) | Yes | Teams wanting good UI |
| Hetrix Tools | 15 | 1 min | No | Yes | Fast-check use cases |
| Uptime Kuma | Unlimited | Configurable | No (manual setup) | Yes | Self-hosters |
| OnlineOrNot | 3 | 1 min | No | No | Minimal indie projects |
Nines
Nines gives you 7 monitors on the free tier with 5-minute check intervals — and the standout feature is that every plan, including free, monitors from multiple geographic regions simultaneously.
Why does that matter? A single-region monitor can miss geographically isolated outages — CDN edge failures, region-specific DNS issues, or routing problems that only affect users in certain locations. When Nines checks your endpoint from multiple regions and they all agree it's down, you can be confident it's actually down. When only one region reports a problem, you know the scope before you've even opened an incident.
You also get a public status page included, so your users have somewhere to check during incidents without you having to set anything extra up. Nines wins on regional coverage, not raw monitor count — if you need to watch 50 URLs, look at UptimeRobot. If you need geographic confidence from your monitoring, Nines is the only free option that delivers it.
Sign up for Nines free — no credit card required.
UptimeRobot
UptimeRobot's free tier is the most generous on the market by monitor count: 50 monitors at 5-minute intervals. That's enough to cover every endpoint in most small-to-medium applications without hitting a ceiling.
The tradeoff is geography. Free-tier monitors run from a single location, so you're checking whether your endpoint is reachable from one point on the internet — not whether it's reliably reachable for users across different regions. For most teams running centralized infrastructure, this isn't a problem. If you're running a CDN-backed app or serving users across continents, single-region monitoring has meaningful blind spots.
UptimeRobot also includes a public status page on the free tier. If your primary constraint is monitoring lots of endpoints and you're not worried about geographic distribution, UptimeRobot is hard to beat on value.
Better Stack
Better Stack (formerly Logtail + Uptime) offers 10 monitors at 3-minute intervals on its free tier. The check frequency is slightly better than UptimeRobot and Nines at the same price point: free.
Where Better Stack stands out is polish. The incident management workflow, on-call scheduling, and overall UI are noticeably more refined than most tools in this category. It's built for teams that want a complete observability platform, not just uptime checks.
The limitation: multi-region monitoring requires a paid plan. On the free tier, you're checking from one location. For small teams that want a clean, well-designed monitoring setup and don't need geographic distribution yet, Better Stack is a strong choice. You'll grow into the paid features naturally as your needs evolve.
Hetrix Tools
Hetrix Tools is a hidden gem. The free tier gives you 15 monitors at 1-minute check intervals — the fastest free checking cadence of any tool in this comparison. Most free tiers make you wait 5 minutes between checks, which means a flapping service could be down and back up multiple times before you're even notified.
If your use case involves services where a 4-minute outage is a significant incident, Hetrix Tools' 1-minute intervals are worth considering even at the cost of fewer monitors. You get a status page included as well.
Multi-region monitoring is not available on the free tier. Hetrix Tools is a good fit for teams where detection speed matters more than geographic breadth — internal APIs, staging environments, or services with tight SLAs.
Uptime Kuma
Uptime Kuma is an open-source, self-hosted monitoring tool. It's free in the "no subscription required" sense — but you pay in server time, setup effort, and ongoing maintenance. If you're already running your own infrastructure, the marginal cost of adding Uptime Kuma is low. If you're not, you'll need a VPS or container host to run it.
The appeal is unlimited monitors with fully configurable check intervals and complete control over your data. The downside is that multi-region monitoring requires deploying multiple Uptime Kuma instances in different locations and aggregating results yourself — there's no built-in geographic distribution.
Uptime Kuma includes a status page and supports a wide range of monitor types. It's the right call for teams already comfortable with self-hosted tooling and who want no ceiling on monitor count.
OnlineOrNot
OnlineOrNot is an indie-built tool with a clean, minimal interface. The free tier is very limited: 3 monitors at 1-minute intervals, with no public status page included on the free plan.
That said, the 1-minute check frequency is genuinely fast, and the product is actively maintained by a small team. For very small personal projects where you need to watch a couple of endpoints and don't need a status page, OnlineOrNot works. For anything beyond that, the 3-monitor cap makes it a poor fit compared to the alternatives.
How to Choose
The right tool depends on what's actually constraining you:
- You need to monitor a lot of endpoints — UptimeRobot's 50 free monitors is the clear winner. Nothing else comes close on count.
- Check speed matters — Hetrix Tools at 1-minute intervals gives you faster detection than anyone else on the free tier.
- You need geographic confidence — Nines is the only tool that gives you multi-region monitoring free. If you want to know your service is reachable across regions, not just from one datacenter, Nines is the answer.
- You're self-hosting everything already — Uptime Kuma fits naturally into that workflow. Unlimited monitors, full control, no subscription.
- UI polish matters to your team — Better Stack has the most refined interface and incident management workflow. Worth it if your team will be using the dashboard regularly.
- Tiny personal project, minimal needs — OnlineOrNot or Nines both work. Nines gives you more monitors and multi-region; OnlineOrNot has faster checks.
Most developers should start with the tool that covers their most important constraint, then upgrade as their needs grow. All of these tools have paid tiers with more monitors, faster checks, and additional features — but the free tiers are good enough to get started and validate that monitoring is solving a real problem for you.
Start Monitoring for Free
If multi-region coverage matters to you — and it should, especially if you're building something that users in different geographies depend on — Nines is worth trying first. Seven monitors, multiple regions, a public status page, and no credit card required. You'll know within minutes whether it fits.