Rental market mobile app from Moscow, Russia

Hi, my name is Boris Shlain.
I’m co-owner of the project - service for owners and tenants for russian rental market.
01.04.2020 we’ve published an app for owners ( In couple of weeks I’m going to share a next version and also a new application for renters. Both applications are linked to the same “database” (google sheet).
We are using also Google calendar and Google Forms (to schedule renters visits), Google Forms for advanced check lists, business logic in Google Script (for tax calculators etc.).