You Want to Visit the UK? You Better Have a Google Play or App Store Account | Philip Heltweg
www.heltweg.org
New immigration rules for the UK are being enforced starting February 2026. This means citizens of 85 additional countries (including the USA and European countries) will need an Electronic Travel Authorisation (ETA) to visit, even for tourism. Luckily, you can apply (and pay) digitally. Unfortunately, the government very much would prefer you to do so using the official app.

This is post is really wtf?

(Tinfoil hat on) Would be interesting to do an investigation on what the app is doing other than allowing you to register if they are insisting so much on having people install it.