Relest is a real estate rental auction platform. Landlords post their listings and tenants place bids for renting this property. Apart from placing auction lots, it is possible to place an ordinary advertisements there. The platform consists of the web-site and applications for Android and iOS. The system includes functions for calculating the trip time from the rented real estate to the tenant’s desired location (e.g. the place of work), calculating an optimal real estate price (based on the data analysis), 3D images of the rooms, a user account for exchanging receipts for services and chatting between the landlord and the tenant, and other functions. The user account and the chat are provided by subscription.