Is It Possible To Buy SkySafari And Download An APK? (Answer: No)

Hello, as plain Android AOSP user via LineageOS without any google services installed (and thus without google play store) on my smartphone - is there any possibility to buy and install SkySafari 7 Plus, e.g. via direct buy on homepage/paypal and direct download of the APK? Also with an older (not 100% up to date 6-5-4?) version I would be happy, as long as I could use it to control my Meade ETX-90 via AutoFi or AutoBT and have an up-to-date star/satellite-cataloge access. Thanks if you have any solution for this, otherwise I have to stick to another app, but SkySafari seems very great Cheers, Robert from Halle (Germany)