Graf IoT

Graf IoT

Cistern and IoT control

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Free

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Released
July 23, 2026
Updated
September 25, 2026

Features

Graf IoT screenshot #1 for iPhone
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About

GRAF IoT shows you how much water is in your system at any time and alerts you before it gets critical. The app connects to your GRAF BlueLevel and GRAF ARCOS devices and brings level, volume and system status together on one dashboard. You get a notification when the level runs too low or too high. The built-in weather forecast shows you the rainfall heading for your site. FEATURES • Fill level and remaining volume in litres and percent • Alerts for critical fill levels • Weather forecast for the location of your system • Level height and device status for every system • All devices on one central dashboard • Device data, assignment and location at a glance • Light and dark mode For cisterns and rainwater systems with GRAF BlueLevel and for retention and infiltration systems with GRAF ARCOS. A connected GRAF device is required to use the app.
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What's New in Graf IoT

1.3.2

September 25, 2026

• Push notifications now arrive reliably right after installing or updating the app • Support for iOS 27 • Live charts update more reliably and recover on their own after a lost connection • Two-step login: password managers now fill in the verification code correctly • Bug fixes and performance improvements

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