Only the current version so far — new entries appear as the app ships updates.
Wunderkind mental arithmetic is an education app by ZiyoTech with 10,000+ downloads (about 31K estimated). +1 installs in the last 7 days. Released Jan 2, 2021. Install growth, rank history, SDKs and ad networks.
From the store listing: “Mental arifmetika kursini mukammal o'rganish uchun yaratilgan dastur”