If you run G.Chrome you can run the native stand alone Google app for free

Had I known that before buying this app I would have saved money and had an even more functional standalone Google Inbox app. The ONLY this Inboxee wrapper adds over Google Chromes native standalone Inbox for Mac is a alive email count icon in the upper menu. That is it and that is not worth any price, not even at 80% off (offered at the time of writing this review). I bought at 40% off the week before it dropped to 80%. My guess is the developers know this app is pointless on a Mac unless you are only running Safari. Buyer beware.

saskid about InBoxee - email client for Google Inbox, v1.4