Breitbandmessung 3.11.0

Breitbandmessung — German broadband and mobile coverage testing you can trust

Breitbandmessung, provided by zafaco GmbH on behalf of the German Federal Network Agency (Bundesnetzagentur), is a free, ad-free suite for measuring real-world internet performance on desktop, in the browser and on mobile devices. The app and web tools focus on objective measurement of download/upload throughput, latency and mobile network availability (No Net, 2G, 3G, 4G, 5G), plus aggregated reporting and map visualizations to document coverage gaps.

Key features

• Multi-platform testing: Desktop app for contract comparison, browser-based tests for web performance and a mobile app (Funkloch) to capture cellular coverage and dead zones.
• Accurate throughput and latency metrics: Independent measurements of download/upload speeds and ping/latency across provider networks and technologies.
• Mobile coverage capture: Save time- and location-stamped availability (No Net, 2G–5G) on-device and visualize results on interactive maps for fixed-line and mobile networks.
• Local storage and aggregated reporting: Measurement results are stored on the device and transmitted in aggregated form to build nationwide datasets and annual reports with interactive graphics.
• No ads, free to use: The app is offered free of charge and without advertising, simplifying long-term measurement and citizen science-style data collection.

How Breitbandmessung works

1. Install the appropriate client: desktop app, launch the browser test, or install the mobile Funkloch app from official sources.
2. Select your test type and (where applicable) your contract or testing profile to compare measured throughput to the contractual data rate.
3. Run the test to collect download/upload speeds, latency and mobile-network availability; results are stored locally with time and location metadata.
4. View individual measurements, export results or contribute anonymized, aggregated data to nation-wide maps and annual reports published on the Breitbandmessung portal.

Installation and supported platforms

• Desktop: Native desktop client for thorough measurements and for documenting non-contractual performance.
• Browser: Fast, no-install browser test to quickly measure internet performance while surfing.
• Mobile: Android app (Funkloch) to capture mobile coverage and perform on-device speed tests; app listing and developer details available on Google Play.

Data handling and privacy

Measurements are saved locally on the user device and transmitted in aggregated form to the project. The Play Store listing and the official site point to a privacy policy describing data categories collected (location, device IDs, app performance), encryption in transit and options to request data deletion. The tool is positioned for transparency and public-interest data collection under the Federal Network Agency.

Who benefits most

• Consumers: Anyone who wants to verify if their internet provider delivers contracted speeds and document persistent performance issues.
• Field testers and reporters: Journalists, researchers and citizen scientists needing location-tagged measurements and coverage maps.
• Regulators and policy teams: Organizations seeking aggregated evidence of coverage gaps and annual trend data published on the project site.

Notable limitations and user feedback

• Contract selection gaps: Some users report missing or outdated tariff options when comparing measurements to contract speeds, which can affect automatic comparisons.
• Signal interpretation: A few reviews note discrepancies between perceived call quality and recorded availability—very low signal can still be logged as a technology present rather than effectively usable.
• Mobile rating variability: Play Store ratings and user comments indicate mixed experiences; however, the app is actively maintained and intended for public-measurement purposes.