Observed arrival · 2026-10-19

Tunnelfunk: network bonding for train journeys

tunnelfunk.com Visit website

Editorial interest 79/100 Selection signal · not a rating of the site

Tunnelfunk is an Android app that combines train Wi-Fi and mobile data to keep connections going when one network drops.

Landing page captured for the 2026-10-19 issue.

For: Android travelers using train Wi-Fi
Worth noticing: The reliability mode duplicates every data packet and explicitly warns that it uses twice the data.

Field notes

The page separates the connection into three modes: selecting the better network, distributing packets across both, or sending each packet over both links. It also distinguishes where traffic travels: the basic mode stays on the device, while the two more reliable modes route through a server in Germany. A separate section describes USB tethering for Mac laptops, and another addresses company VPN use.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

$PaidCommerce or pricing visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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