FlatLyne vs CheckoutAlarm

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

FlatLyne compared with CheckoutAlarm
Detail	FlatLyne	CheckoutAlarm
What it does	Cron job monitoring that alerts you when scheduled tasks don't run	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 plan: 10 checks, 1 project, 1 seat, 2 alert channels, 100 ping history per check, 1 minute minimum schedule. Pro: $12/month or $108/year (25% discount), 100 checks, 10 projects, 10 seats, unlimited alert channels, 1,000 ping history per check, 30 second minimum schedule, email support, 50 Whats	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	HTTP ping-based job monitoring Support for cron expressions and interval schedules Multiple alert channels: email, Slack, PagerDuty, webhooks Exit code and log output capture Grace periods for late-running jobs Credential rotation on Pro and Business Encrypted ping URLs at rest WhatsApp and phone-call alerts on Pro Ping history retention: 100 pings on Free, 1,000 on Pro and Business	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	Detects silent failures that traditional monitoring misses: jobs that never start or run but produce no errors Minimal setup: add one curl command to your existing jobs Secure credential model: each ping URL can only ping one check, stored encrypted, with SHA-256 hashed API keys Early pricing locked in for existing subscribers while new customers pay higher rates	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)	Not checked yet no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	0	0
Citation Flow (Majestic)	18	14
Referring domains (Majestic)	3	2

5 details filled in for both companies.

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