I have been using construct 2 and want to upgrade to construct 3 but cannot find a free edition. please help.
Free edition can be accessed here:
editor.construct.net
Make sure you're logged in with an account as it gives you more events.
but it asks for a service. is there a way to install it and save projects to your computer?
In Chrome you can use 'Install as app' from the main menu to install it, and save projects to disk using "Download a copy". Alternatively there's the desktop download of C3.
how to install as app?
Develop games in your browser. Powerful, performant & highly capable.
I just explained that. If you need more information, see the manual.