Can I redownload Minecraft on a different after purchasing it on android?

I was wondering if I purchase Minecraft on device A, can I download it on device B, using the same Gmail, such that both device have Minecraft? As when I purchased it, it showed me a refund button, so I assumed that I can only be used per device and if I want to play on another device I would have to refund and re-purchase. Is my assumption true?