If you are looking for a similar aesthetic (thin, rounded, geometric, or futuristic), the following fonts are available for free download (usually for personal use only):
Do not simply search "lunair base font free download" on Google and click the first link. Here are the three safest methods to acquire this font:
Note: I assume you mean a font named “Lunair” (or similar spellings). If you meant a different name, substitute that spelling.
Trusted sources to check first
How to verify a download is safe and legal
Step-by-step: download and install (Windows / macOS / Linux)
Using the font in design apps
If you need web use (webfont)
If you can’t find “Lunair”
Legal caution
If you want, I can:
Which would you like?
Quicksand has a softer, rounded feel but maintains the high x-height and futuristic spacing of Lunair Base. For a lunair base font free download alternative that works beautifully for children's brands or soft tech UI, Quicksand is king. lunair base font free download
Using a "Personal Use" font for a client project without paying can lead to legal action from the font creator. Always read the readme.txt file included in the font download folder.