People stay on a free uptime tool longer than they should because migration sounds like a project. It does not have to be. Treat it like changing smoke detectors: install the new ones, make sure they beep for real smoke, then take the old batteries out.
Why people leave
Common triggers: commercial use blocked on the free tier, five-minute intervals, no on-call, no status page worth showing customers, or false pages that trained the team to ignore alerts. Whatever your reason, write it down — it becomes the acceptance test for the new setup.
The parallel week
- Pick the critical URL list — not every old monitor. Use what to monitor on a SaaS.
- Create the same checks in the new tool with the confirmation rules you want (regions, intervals).
- Send the new tool to a quiet channel —
#monitoring-shadow— not the main on-call path yet. - For several days, compare. When old fires and new does not (or the reverse), ask which was right. Adjust.
- Only then point escalation and the primary Slack/email at the new tool.
- Keep the old tool read-only for a few days as a seatbelt. Then turn it off.
What to migrate besides URLs
- Notification destinations
- Status page components and custom domain (DNS steps)
- Who is on-call and the escalation policy
- Maintenance window habits for deploys
Do not migrate junk. A free plan with fifty monitors often includes twenty nobody can explain. Leave those dead.
Acceptance test
Before you cancel the old account:
- A deliberate failure pages the right person on the new stack.
- A known flaky old alert stays quiet on the new rules if it was noise.
- Status page (if any) matches reality.
- Someone besides you can ack an incident.
If you are moving toward Tallwatch, the free production plan is built for this shadow week — commercial use allowed, consensus on by default. Use it to earn trust first; upgrade when the monitor count or channels demand it.
Migrations fail when teams cut over on Friday night with no overlap. Overlap is the whole trick.
