QIWI Wallet on Google Play. You can endlessly argue about what is more technological: Android or something else. But the statistics are 73 % of Russians have smartphones on Android, not buttons.

https://odesoftami.com/qiwid-identifikatsiya-qiwi-koshelka-online/. https://otzovik.com/reviews/qiwid_com-onlayn_identifikaciya_qiwi_koshelkov_ dlya_ukraincev/.