Free error tracking and uptime monitoring tiers compared
This page lists the free plans of 10 error tracking, uptime monitoring and observability services that indie developers often use. For each one we show the free plan, its cap in the vendor's own unit (errors, events, monitors, check runs or GB), the check interval, seats and projects, data retention, commercial use, whether a card is needed, and any self-hosted option. Every figure comes from the vendor's own pages, which are linked in each row. Vendors count usage in different units, so the table keeps each vendor's own wording. Figures were last checked on 22 October 2026.
Last checked
All figures are from the vendors' US English pages.
not stated for the free plan; docs list uptime intervals ("Time between each check") from 1 minute to 1 hour
"Limited to one user"; "Projects Unlimited"
"Data retention 30-day lookback"
not stated
not stated
Yes: "How you can run all of Sentry on your own server, without paying anything."
Developer plan: "For solo devs working on small projects". "New users only: Get 5,000 free replays per month for your first 3 months." Team: "$26/mo" ("When billed annually with default pre-paid data").
"10 monitors & heartbeats, 1 status page"; "100,000 exceptions per month"; "3 GB logs retained for 3 days"
"Get 10 monitors, 10 heartbeats and a status page with 3-minute checks totally free."
not stated
not stated for errors and uptime data; logs and traces: "3 GB traces retained for 3 days", "3 GB logs retained for 3 days"
not stated; the plan is labelled "Free for personal projects"
not stated
not stated
Free plan also lists "5,000 session replays" and "30 GB metrics". Paid incident management "Starts at just $34" ("Starts at just $29" billed annually).
"Notify seats unavailable No login seats available"
"We save your logs even for response times. 3 months" (Free column)
Yes: "UptimeRobot is available for any use, including commercial and business use."
No: "No credit card required!"
not stated
Free card: "Good for hobby and non-profit projects." "Free plan includes 1 status page with a unique UptimeRobot URL only." "SSL monitoring is included only in paid plans." Free lists "Only 5 integrations". Prices were shown in euros when fetched.
not stated per plan (the compare table lists "Unlimited projects" and "Unlimited users" without a per-plan value)
"Maximum data retention 30 days" (Free column)
not stated
not stated
not stated
Free has "Included credits 0". Trial of paid features: "Evaluate the complete Advanced feature-set with 200K occurrences, 10K replays, and 15K credits."
Users: "How many people can work on your projects together. 1"; projects: "The number of distinct applications or services you can monitor. Unlimited"
Errors: "How long we store your error data and make it available for analysis. 15 days"; logs: "How long we store your log/event data and make it available for analysis. 7 days"
not stated; the Developer plan is "Built for solo developers working on side projects or serious production apps."
not stated
Sales enquiry only: "Ask us about High-volume pricing Single-tenant or self-hosted deployments"
"Our free Developer plan is great for new apps, side projects, and developers working solo." Team: "$26 /mo".
Yes: Free "Solo users and their passion projects $0 /month"
"7.5K events and 1M spans per month"
not stated
"Includes: 1 user"; projects: not stated for Free (features list: "Create an unlimited number of projects in BugSnag.")
"Our Free tier includes 7 days of data retention"
not stated
not stated
Enterprise only: "On premises or SaaS deployment" (listed after "Preferred plan features, plus:")
Paid plans: FAQ asks "How does the 14-day free trial work?" (the answer is not in the fetched page). "An event is an unhandled exception (error or crash) or any handled exception that you choose to report".
not stated; Personal is "For individual developers and small projects."
"30-day retention"
not stated
No: "No credit card required."
not stated
Axiom calls itself "The modern machine data platform." Alerting is included on Personal ("Alerting Yes Yes"). Personal: "Spend alerts and hard caps n/a (no spend)".
Metrics: "Limited to 10k active series per month"; logs, traces, profiles: "Limited to 50 GB ingested per month"; synthetics: "Limited to 100k API test executions & 10k browser test executions per month"
not stated
not stated
"14 days retention for metrics, logs, traces, profiles, & k6 performance tests"
not stated; the free plan is "Perfect for personal projects, exploring new ideas, and early-stage startups."
No: "No credit card required"
Yes: "run on your own infrastructure with self-managed options."
Free includes "All Grafana Cloud services, with usage limits" and "Community support". Pro: "From $19 / month + usage".
"100 log entries per job" ("When the limit is reached, the oldest log entries are removed")
not stated; the FAQ gives an example of two employees creating "Hobbyist accounts for work use"
not stated
Yes: "Healthchecks is open-source, and is licensed under the BSD 3-clause license."
"Please do not use multiple accounts to get around the limits of the Hobbyist plan." "We offer the Business plan free of charge for open-source projects and nonprofits."
Region: US English pages. Figures are the published free-plan terms on each vendor's own pages on 22 Oct 2026. UptimeRobot's page showed prices in euros ("Free € 0 /month") when fetched.
"not stated" means the vendor's pages that were checked did not state the value. It does not mean "included", "not included", "allowed" or "not allowed".
All ten vendors publish a free plan, so no row is trial only. Highlight was a candidate but highlight.io now redirects to launchdarkly.com, so it was dropped and Healthchecks.io was added. Paid-plan trials are noted where the page shows them (Rollbar, BugSnag).
Caps keep each vendor's own unit and are not converted: errors (Sentry, Honeybadger), "exceptions" (Better Stack), "occurrences" (Rollbar), "events" (BugSnag), monitors (UptimeRobot, Checkly, Better Stack), "jobs" (Healthchecks.io), GB and compute (Axiom), active series, GB and test executions (Grafana Cloud).
Check interval reads "not stated" where the pages checked give no uptime or synthetic check frequency for the free plan. This includes error trackers whose free plan lists no uptime checks (Rollbar, BugSnag), data platforms (Axiom, Grafana Cloud), and Healthchecks.io, where jobs ping the service instead of being polled.
Commercial use is stated by one vendor only: UptimeRobot's terms say it "is available for any use, including commercial and business use", while its free card says "Good for hobby and non-profit projects." Better Stack labels its free plan "Free for personal projects". Where a vendor only describes who a plan is for, the cell reads "not stated" and quotes that description.
Self-host: Sentry, Grafana and Healthchecks.io offer self-hosted versions. Honeybadger lists "self-hosted deployments" as something to ask sales about, and BugSnag lists "On premises or SaaS deployment" on its top plan. "not stated" means the pages checked do not offer a self-hosted version.
Sources: only each vendor's own pricing, docs and terms pages. No third-party sites.
Region: US English pages, standard self-serve plans.
Figures are quoted as the vendor writes them, including the vendor's own unit (errors, events, occurrences, monitors, check runs, GB). We did not convert, total or estimate any figure.
"Trial only" would mean the vendor publishes no free plan; all 10 vendors listed publish one.
Where a value was not stated on the vendor's pages, the cell reads "not stated". This does not mean "included", "not included", "allowed" or "not allowed".
