Uptime Monitoring Approaches Compared: Scripts, Free Tiers, Hosted Services, and Full Observability
Five honest ways to find out your site is down before your customers do, from a cron job on a spare server to a full observability stack, with the trade-offs each one carries for a small team.
There is no single right way to monitor uptime. A solo founder with one marketing site and a small SaaS with paying API customers have different needs, different budgets, and different tolerance for being woken up. What follows is a comparison of the five approaches we see small teams actually use, judged on the criteria that matter in practice: whether the approach catches real outages, whether it wakes the right person, whether it helps you talk to customers, how much ongoing effort it demands, and how predictable the cost is. We have used every one of these at some point. None of them is wrong; several of them are wrong for a given stage.
| Option | Detection accuracy | Alerting and escalation | Status page and communication | Setup and maintenance effort | Cost and predictability |
|---|---|---|---|---|---|
| Homegrown cron script or self-hosted checkerBest for: Engineers who want full control, have a spare machine outside their main infrastructure, and are monitoring a handful of endpoints. | Only as good as what you write. Usually a single location, which means data center hiccups look like outages and regional problems go unseen. Content assertions and certificate checks are possible but rarely built. | Typically an email or a chat message on failure. Confirmation thresholds, escalation to a second person, and recovery notices all have to be hand-built and tend not to be. | None by default. If the checker runs on your own infrastructure, it goes down with the thing it is watching, which is the exact moment you need it. | Quick to start, slow to keep honest. Someone has to own the script, the host it runs on, and the notification credentials, and that ownership tends to evaporate when the author changes roles. | Close to free in money, expensive in attention. The real cost shows up as the outage nobody was told about because the checker itself had silently stopped. |
| Free tier of a hosted uptime monitorBest for: Early-stage products that need a basic external heartbeat on a few URLs and can live with longer intervals and limited alert channels. | External and usually from more than one location, which is a real step up from a script. Intervals are often longer on free plans, and advanced check types such as keyword matching, API assertions, or heartbeats may be limited or absent. | Email and one or two chat integrations are typical. Phone or SMS escalation, on-call schedules, and multi-step escalation are generally reserved for paid tiers. | Some free tiers include a basic public status page, often with provider branding and without custom domains or subscriber notifications. | Minutes to set up, little to maintain. The main risk is outgrowing the plan quietly and not noticing that the checks you rely on are the ones the tier does not support. | Free until it is not. Watch for monitor count caps and interval limits that push you toward a paid plan at an unplanned moment. |
| Paid hosted uptime monitoring with multi-location checks and a status pageBest for: Small SaaS teams with paying customers who need trustworthy detection, real escalation, and a status page they can point customers to, without running any of it themselves. | Short intervals from several locations with majority-based confirmation, plus keyword, API, SSL expiry, DNS, TCP, and heartbeat checks. Covers most of what a small team needs to catch real outages rather than symptoms. | Confirmation thresholds, maintenance windows, escalation policies, and phone, SMS, chat, and webhook channels are standard. This is where false alarms get engineered out. | A hosted status page on your own domain, independent of your infrastructure, with component states, incident updates, and subscriber notifications by email or feed. | An afternoon to set up properly, then a monthly review to prune stale checks and update escalation contacts. The provider owns the checker fleet and its reliability. | A predictable monthly subscription, typically priced by monitor count, check interval, and team size. Usually a small fraction of one hour of engineering time per month. |
| Cloud provider built-in health checksBest for: Teams already running behind a cloud load balancer who want failover between instances and are willing to treat customer-facing monitoring as a separate concern. | Excellent at what they are designed for: detecting an unhealthy instance and routing around it. Poor as a substitute for uptime monitoring, since they check from inside the provider network and cannot see DNS, certificate, or CDN problems the way a customer would. | Alarms can be wired to notification services, but the tooling is oriented toward infrastructure metrics rather than human escalation. Building a proper on-call flow takes real configuration. | None. The provider's own status page describes the provider, not your product. | Moderate, and it grows with every load balancer and region you add. Easy to end up with health checks that pass while the application is broken because they only test a trivial path. | Bundled into the compute and networking bill, so cheap in isolation but hard to attribute. Alarm and notification usage can add small, variable charges. |
| Full observability platform with synthetic monitoringBest for: Teams that have outgrown simple checks, need metrics, logs, and traces in one place, and have someone whose job includes maintaining the monitoring itself. | The deepest option. Multi-step browser transactions, API checks with rich assertions, and correlation with backend metrics let you detect and diagnose in the same tool. | Powerful and flexible, sometimes to a fault. Alert rules can be built on almost any signal, which means alert fatigue is a real risk unless someone curates them deliberately. | Often available as an add-on or a companion product rather than a core feature. Quality varies; check whether it is truly independent of your infrastructure. | Significant. Agents, instrumentation, dashboards, and alert rules all need ongoing care. Synthetic browser scripts break with every UI change and need an owner. | Frequently usage-based, tied to data volume, hosts, or synthetic runs, which makes the bill hard to forecast for a growing product. Budget alerts are worth setting on day one. |
- Homegrown cron script or self-hosted checker: A fine starting point for a side project, and a common source of false confidence for a business.
- Free tier of a hosted uptime monitor: Good enough to know that the site is up; rarely enough to know that the product works.
- Paid hosted uptime monitoring with multi-location checks and a status page: This is the tier we built and the one we recommend for most small product teams, so weigh that bias accordingly.
- Cloud provider built-in health checks: Keep them for failover and pair them with an external monitor; they answer a different question than the one customers ask.
- Full observability platform with synthetic monitoring: Worth it when diagnosis, not just detection, is the bottleneck; premature for a team that mostly needs to know whether checkout works.
Our verdict
For most small software teams with customers, a paid hosted uptime monitor with multi-location checks, real escalation, and an independent status page is the practical center of gravity. It catches the outages that matter, it wakes a human only when one is needed, and it gives you a place to communicate that stays up when you are down. The cost is predictable and small compared with the engineering time it protects. Cloud provider health checks belong alongside it, doing the failover job they were designed for, not replacing it.
The other options make sense at the edges. A script or a free tier is reasonable for a side project or a pre-revenue prototype, as long as you are honest with yourself about what it does not cover, particularly certificates, APIs, and background jobs. A full observability platform earns its cost once your problem shifts from knowing that something is broken to understanding why, and once someone on the team has the bandwidth to own it. Whatever you choose, revisit the decision after every significant incident. The outage you did not detect in time is the most reliable guide to what your monitoring is missing.
Frequently asked questions
Can I combine several of these approaches instead of picking one?
Yes, and most mature setups do. A common pattern is cloud provider health checks for instance failover, a hosted uptime monitor for external detection and the status page, and, later, an observability platform for diagnosis. The main thing to avoid is two systems alerting the same person about the same outage with different confirmation rules.
Is a free tier ever enough for a business with paying customers?
Occasionally, for a very simple product with generous customers, but usually not. The gaps that hurt are longer check intervals, limited or missing SSL and API checks, and no phone escalation. If an hour of undetected downtime would cost you a customer, the price of a paid tier is easy to justify.
Read the complete guide for the full reasoning behind this comparison.