SignalWatch 3 min read

Cheapest way to monitor a web page for changes

For a few public URLs, a free cloud plan with frequent checks beats a free plan that rations monthly checks. SignalWatch's free tier is built for that.

The cheapest reliable option for a handful of public pages is a free cloud monitor that checks often enough to catch a quiet edit the same day, without a monthly check quota that runs out. SignalWatch free: 3 monitors every 15 minutes, 45-day history, no card. Paid starts at $12/month for 50 monitors every 5 minutes.

What "cheap" actually means

Cheap is not only $0. It is $0 that still does the job, or the lowest paid plan that does.

  • Job: know when the visible text on a public URL changed, preferably with a diff.
  • Constraint: the page is public HTTP(S). Login walls need a different class of tool.
  • Failure mode to avoid: a free plan that allows several pages but only ~daily checks, so a morning price change sits unseen until tomorrow.

How to set the monitor up (selector, ignore rules, channels) is in how to get alerted when a web page changes.

Free plans compared by the limit that bites first

Other products publish free tiers too. Their numbers change; check their sites before you decide. As of the public pricing pages used for SignalWatch vs Visualping and SignalWatch vs Distill:

  • SignalWatch free: 3 monitors, every 15 minutes, no monthly check cap on that plan, no card. You can try a URL before signup.
  • Visualping free: 5 pages, 150 checks/month, minimum interval 60 minutes. Frequent checks burn the quota.
  • Distill free (cloud): 5 cloud monitors (25 total including local), 1,000 cloud checks/month, 6-hour minimum cloud interval. Local monitors need your device on.

If you need three URLs watched through the working day from the cloud, SignalWatch's free shape usually costs less in practice than a "more pages, fewer checks" free plan — because you do not pay to restore check frequency.

When $12/month is still the cheap answer

Stay on free while three monitors are enough. Move to SignalWatch Pro ($12/month or $79/year) when you need more URLs or a 5-minute interval. Business is $29/month or $199/year for 500 monitors every 2 minutes.

That paid entry is lower than Distill Starter ($15/month) and Visualping Personal 1K ($14/month) on their published tables, while including Slack and Discord among the alert channels. If you need visual AI summaries or login macros, those products may still be worth the higher bill — you are buying a different feature set, not the same text monitor at a markup.

What not to do to save money

  • Bookmark the page and "remember to look." That is free until the day you do not.
  • Run only a local browser extension and shut the laptop. Cheap until the change happens overnight.
  • Buy an uptime tool and expect it to report a rewritten pricing table. Uptime answers "is the host up?", not "did the words move?" — see page change monitoring vs uptime monitoring.

A small checklist

  1. List the public URLs you would act on if they changed (usually one to three).
  2. Put them on SignalWatch free. Add a CSS selector if the header or a clock causes noise.
  3. Upgrade only when you hit the monitor count or need a faster interval.

That is the low-cost path for text change monitoring without a suite.