Pushover Notifications vs Cava Guard

Pushover is a simple push notification service that integrates easily into web apps like IFTTT, network monitoring systems, security cameras, shell scripts, IoT devices, webhooks, and anything else that needs to send alerts to your iPhone, iPad, Desktop, and other robot-like mobile devices. App has a free 30-day trial and unlimited usage beyond the trial requires a one-time in-app purchase. Pushover includes an Apple Watch app and complications so you can push custom data straight to your watch face with our Glances API. Visit https://pushover.net to find apps, plugins, and services that already natively support Pushover, or get a free API key for your own apps.

Cava Guard watches the temperature inside your wine fridge and tells you the moment something is wrong — including when the sensor itself goes quiet. IMPORTANT: THIS APP NEEDS HARDWARE YOU RUN YOURSELF Cava Guard is the iPhone client for a small monitoring server that runs on your own Raspberry Pi, with a Zigbee temperature sensor inside the fridge. Without that server the app has nothing to show you. Everything you need is listed at cavaguard.com. You do not need any of it to look first: tap "Look around without a Pi" on the opening screen to explore a sample cellar with invented readings. WHAT IT DOES • Live temperature from every sensor, and the history behind it — six hours to a year, with the highs and lows that an averaged reading hides. • Alerts that break through. Set a range per fridge; going outside it sends a time-sensitive notification that Focus does not hold back. • Alerts on silence. A sensor that stops reporting raises an alarm of its own. A monitor that fails quietly is worse than no monitor at all. • Battery and signal strength for every sensor, so a dying cell is something you replace rather than something you discover. • More than one place. A fridge in another house is simply another server in the list, and alerts reach you from all of them. WHAT IT DOES NOT DO • No cloud. Readings travel from the sensor to your Pi and from your Pi to your phone. There is no service in the middle, because there is no service. • No account. Nothing to sign up for and nothing to sign in to. • No subscription, no advertising, no analytics. The app is free and collects nothing whatsoever. AWAY FROM HOME At home the app talks to your Pi directly over your own network. To reach it from anywhere else it uses Tailscale, which you turn on from inside the app — no ports opened on your router, no dynamic DNS, and a real certificate.