'free for use' is correct and usable in written English.
You would typically use it when talking about something that is available for people to use, usually with no cost or obligation. For example, "This software is free for use by anyone."
RetroBSD is an open-source project, free for use and alteration.
As a result, the tongue is free for use as an organ of chemoreception (see also Jacobson's organ).
The space was opened last week, free for use by people who want to work in a more casual -- and more public -- setting.
CABLE COMPANY WI-FI ALLIANCES Last year, America's cable TV companies began installing regionwide wireless Internet hot spots, free for use by their cable Internet customers.
Open data — data that is free for use, reuse, and redistribution — is an intellectual treasure-trove that has given rise to many unexpected and often fruitful applications.
They are free for use in educational purposes, with permission from the authors, but are not intended to replace appropriate health care and follow-up.
A few metres away, there are some free-for-use ping-pong tables, but no one's fighting over the bats and balls.
Moreover, while we tout the free-for-use nature of much of the software we used as a benefit, we also note that such software can come with caveats.
Using the additional geocoded data collected from facilities, the project began entering the data into a database that could be imported into Google's free-for-use Maps Engine and, later, open-source software called OpenLayers.
Separately, Clariant Masterbatches has recently introduced a new antistatic masterbatch concentrate that is both amide- and amine-free for use in pharmaceutical polyethylene (PE) films.
Kinematics, the newest 3D printing project from Nervous System, has combined computational geometry techniques with body scans and other customization methods to create a jewelry collection and accompanying customization app--free for use with desktop 3D printers. .
