[!WARNING] Service status (9 Oct 2026): pumpfoil.org is wrongly blocked by the DNS4EU filtering resolvers. If the app or the website shows “Hostname pumpfoil.org not verified” with a certificate for *.joindns4.eu, your phone or network uses the filtering DNS from DNS4EU, which currently sends pumpfoil.org to its warning page. Every other DNS service resolves it correctly. We have reported the false positive (DNS4EU / Whalebone ticket 58102).

Workaround until it is fixed: on Android set Settings → Network → Private DNS to Automatic (or to unfiltered.joindns4.eu); on other devices use your provider’s DNS or the unfiltered DNS4EU resolver 86.54.11.100. Updates on this page.

Pumpfoil

Record and analyze pump foiling sessions from your sports watch — GPS track, foiling distance, pump cadence and glide phases. Garmin, Wear OS, Apple Watch, Amazfit (Zepp OS) and Huawei (beta), with native iOS/Android apps and a web PWA.

pumpfoil.org · License: AGPL-3.0

Pump foiling means riding a hydrofoil with no wind, waves or motor — you stay up purely by pumping the board rhythmically. Pumpfoil records these…