Proton AG is an indie developer on the App Store with 11 apps. On IndieRank, they are ranked #185 out of 4,169 developers (top 4%). Their primary category is Productivity, with 11,088 total ratings and a 4.6★ weighted average. Their most popular app is Proton Mail: Email chiffré with 4.9K ratings and a 4.7★ score.