SignalWatch vs CheckoutAlarm

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

SignalWatch compared with CheckoutAlarm
Detail	SignalWatch	CheckoutAlarm
What it does	Know when a public page changes	Monitor your checkout and Stripe account, get alerts when either breaks
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	US
Pricing model	Freemium	Freemium
Pricing	Free: $0 (3 URL monitors, checked every 15 minutes, 45-day history). Pro: $12/month or $79/year (50 URL monitors, checked every 5 minutes). Business: $29/month or $199/year (500 URL monitors, checked every 2 minutes). All plans include email, Slack, Discord, webhooks, and REST API.	Free: $0/month for 1 site checked daily plus daily Stripe check. Pro: $19/month for up to 3 sites checked hourly plus hourly Stripe check. Full refund within 7 days.
Key features	Text change detection with unified diffs Downtime and recovery alerts TLS certificate expiry monitoring CSS selector support for page sections Ignore regex and minimum-change thresholds Email, Slack, and Discord alerts Signed JSON webhooks REST API with OpenAPI documentation 45-day alert history Test alerts before deployment	Site ownership verification by DNS TXT record, meta tag or file Scheduled page checks with status, response time, and title/phrase verification Stripe health monitoring with read-only key Email alerts after 2 consecutive page failures or first Stripe problem Daily ownership verification checks with pause if proof is missing Encrypted storage of Stripe read-only keys
What makes it different	No JavaScript rendering, only fetches visible text Free plan includes webhooks and API Flexible alert destinations: email, Slack, Discord, or custom webhooks Individual URL monitoring without site crawling Scheduled checks, not instant: free every 15 min, Pro every 5, Business every 2	Combines page uptime with Stripe payment health in one tool Detects silent payment failures other uptime monitors miss Uses read-only Stripe key so CheckoutAlarm cannot modify your account No code integration required Proof of ownership verified before monitoring starts
Community votes	0	0
DR (Domain Rating by Ahrefs)	9 no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	6	0
Citation Flow (Majestic)	24	14
Referring domains (Majestic)	13	2

5 details filled in for both companies.

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