What Happ is, and what it is not

Client, not a service

The confusion behind most questions about Happ is one word: people call it a VPN, so they expect it to behave like one — install, press connect, done. It does not work that way, and knowing why saves a lot of guessing later.

A service sells access to servers. A client is the program that uses that access. Happ is the second kind. It understands a set of proxy protocols — VLESS, VMess, Trojan, Shadowsocks, Socks5, Hysteria2 — and it will talk to any server that speaks one of them. Which servers, and who owns them, is entirely decided by the link you give it.

That also answers the safety question in the only way it can honestly be answered. The app is published in the open, and on desktop you can take the installer straight from the project’s releases. But whoever operates the servers behind your link handles your traffic. A link from a service with a name, a price and a support channel is a different proposition from one posted in a public chat by an anonymous account, even though the app treats them identically.

What a subscription link is

It is a single web address. The app fetches it, gets back a list of servers, and keeps that list up to date on its own. You paste it once.

Two practical consequences follow, and both cause a lot of avoidable trouble:

Anyone holding the link has your access. There is no password on top of it — the link is the credential. Sending it to a friend is the same as sharing an account.

The address of your provider’s web dashboard is not the link. They look similar and people copy the wrong one constantly. The dashboard address opens a web page; the subscription address is what the app is meant to fetch. If Happ answers with a short error after you paste something, the errors page tells you which of the two you have.

Is it the real app?

The mobile app is published by Flyfrog LLC. On the App Store and on Google Play that seller name is displayed on the listing, and it is the fastest check you can make — icons and titles get copied, seller names do not.

This matters more than usual right now. Availability of the app in stores has changed several times, and each time the listing goes missing, copies using the same name appear in search. What is actually live in each store today, with versions and dates, is tracked on the status page.

Getting to a working connection

Three things have to be true: the app is installed, you have a subscription link, and the link is still valid. In that order, because each one makes the next one checkable.

1. Install from a source you can verify — direct links are here, including the arm64 builds the official site does not list.
2. Get a link. Public ones circulate freely; the free keys page is straight about how long they last and why.
3. Paste it into the app. If it does not take, read the exact wording of the message — each one narrows the problem down considerably.

If you would rather use a different client with the same link, that is a normal thing to do and the alternatives page covers which ones accept the same format.