# Graf IoT — Cistern and IoT control

> Cistern and IoT control (iPhone/iPad app by Otto Graf GmbH Kunststofferzeugnisse.)

- Source: https://appshunter.io/ios/app/graf-iot/id6791990483 (this page in markdown: same URL + `.md`)
- Developer: [Otto Graf GmbH Kunststofferzeugnisse](https://appshunter.io/developer/571869799)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 16.0 · 47 MB
- Languages: American English
- Released: 2026-07-23
- Data updated: 2026-09-22
- User reviews in markdown: https://appshunter.io/ios/app/graf-iot/id6791990483/reviews.md

## What is Graf IoT?

Graf IoT is the official app for monitoring and managing your Graf system.

Designed for connected cistern, rainwater and irrigation systems, the app gives you a clear overview of your devices, current fill levels, system status, and important device information — anytime, anywhere.

With Graf IoT, you can:

• View current fill levels and tank status
• Monitor volume, level height, and device condition
• Manage connected devices from a central dashboard
• Access detailed device information, ownership, and location data
• Use a clean interface with light and dark mode support
• Stay connected to your Graf platform with a modern IoT experience


## Version history (last 3 releases)

### 1.3.1 — 2026-09-18

- Minor bug fixes and performance update
- Translation fixes and general stability improvements

### 1.3.0 — 2026-08-21

Home Assistant integration — generate an access token from any device and
add it to Home Assistant to read its data and control it from your smart
home setup.

Plus a round of bug fixes and stability improvements, including better
layouts on smaller phone screens.

### 1.0.1 — 2026-07-23

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-22.*