ChangeWatcher vs Semaphor

ChangeWatcher is a mobile companion for changedetection.io — the open-source website change detection service. Connect to your self-hosted or cloud changedetection.io instance and monitor all your watched pages from your iPhone or iPad device. KEY FEATURES • View and manage all your monitored websites in one place • Add new watches and organize them with tags • Compare page snapshots with a built-in Diff viewer • Track price changes and restock alerts • Configure content filters using CSS selectors, XPath, JSONPath, or JQ • Set up custom notification channels (Discord, Slack, Email, and more) • Pause, resume, or recheck watches on the go • Connect to multiple changedetection.io instances • Dark mode support HOW IT WORKS ChangeWatcher connects to your changedetection.io instance via its API. All monitoring runs on your server — the app gives you a fast, native way to check results, review changes, and manage your watches from anywhere. No account creation required. Just point the app at your changedetection.io instance, enter your API key, and you're ready to go. Privacy Policy: https://changewatcher.app/privacy Terms of Use: https://changewatcher.app/terms

Semaphor answers simple question: Are my websites online and running? Stop finding out your site is down from a customer email. PERFECT FOR - Business owners wanting to know if their store is online - Agencies and freelancers watching client websites - Indie makers watching their own sites and landing pages - Developers watching endpoints and APIs FRESH WIDGETS Semaphor has beautiful widgets so you can see your status anywhere on your screen. Pick your refresh interval and turn on notifications so you never miss alert. THE APP IS YOUR DASHBOARD Add and organize your sites, see them all on one board, and tap any site for its response time, its recent checks and the latest HTTP result. Tap refresh to re-check every site at once. TELLS YOU WHEN IT BREAKS Turn on down alerts and Semaphor notifies you when a site goes red. Quiet hours hold alerts back overnight, and you can mute one site while you are busy fixing it. SSL CERTIFICATES BEFORE THEY EXPIRE See how many days are left on a site's SSL certificate and who issued it, and get a warning 14 days and 3 days before it expires. UPTIME HISTORY Uptime over 7 and 30 days, total downtime, the longest outage and the average response time, per site and across all of them. PRIVATE BY DESIGN No account, no sign-up. Semaphor contacts the websites you add and nothing else, and it stores your list and results on your device. No analytics, no tracking, no data collected about you. Ever. UPGRADE IF YOU NEED MORE Full version contains: Unlimited sites, down alerts, quiet hours, every check interval, website history, every widget size including Lock Screen. REQUIREMENTS - iPhone and iPad - iOS 17 or later - Free to download, no account required