Since Android will prompt you to confirm every update, I'm not sure how to design the UX. I think the closest would be a Update All button.
Discussion
Sorry, I might asked it in a confused way. I mean to update the zap.store app itself. Instead of downloading the release by GitHub to update it. For example Minibits looks to update for its own updates. Would love to see that in zap.store too. I missed the 0.1.1 release because I missed your note about that. Luckily I saw the note about 0.1.2 