The only free siddur in beautiful Material Design that contains all of weekday davening in nusach Ashkenaz, Sfard and Edot HaMizrach. The siddur contains all the text you would expect in a regular print siddur. It knows what day it is and delivers the specific tefilos for that day.
Beezy Works Studios is the developer of the tool which can be found in the Books & Reference category. The most recent update of the app was launched on May 1, 2018 and this application has been set up by over 10K users. Siddur One has the overall rating 4.7 on Google Play.