Arin

Up until the late 2000s, it was more often used as a Feminine name as a variant of Erin, with 85 girls and 44 boys recorded with the name Arin in 1997 according to the USA Social Security Administration.
https://www.names.org/n/arin/about

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Nowadays it's more often used as a Masculine name as a variant of Aaron, with 77 boys and 32 girls recorded with the name Arin in 2022 according to the USA Social Security Administration
https://www.nancy.cc/baby-name/arin/

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In the UK, it's also more often used as a Masculine name as a variant of Aaron, with 27 boys and 9 girls recorded with the name Arin in 2017 according to the Office for National Statistics census of England and Wales.
https://names.darkgreener.com/#arin

Arin is a unisex name. [noted -ed]

The name Arin was given to 56 boys and 34 girls in the US in 2016. I actually prefer the spelling for boys myself.