Android — Firefox + Tampermonkey
The same one-time setup as Userscripts on iPhone — just use Firefox and the Tampermonkey add-on instead.
- Download Firefox from Google Play and open it.Get Firefox on Google Play
- Install Tampermonkey: in Firefox tap the menu ⋮ → Add-ons → Manage add-ons → search for Tampermonkey → Add to Firefox.Or open the Tampermonkey page directly
- Come back to this page in Firefox and tap:Install FUTBoost on AndroidA code page opens — Tampermonkey shows an "Install Script" dialog → tap Install.
- Open the FC web app in Firefox and log in — the FUTBoost button appears bottom-left.
⚠️ Firefox only — Chrome on Android has no extension support, and the Companion app doesn't either. Do every step inside Firefox. Don't use Private Browsing.