Apparently I forgot to mention the note keeping apps I use: Google Keep, and Evernote
5 Apps I use every day to stay organized and productive
https://play.google.com/store/apps/details?id=com.google.android.calendar
https://play.google.com/store/apps/details?id=com.trtf.blue
https://play.google.com/store/apps/details?id=com.trello
https://play.google.com/store/apps/details?id=com.asana.app
https://play.google.com/store/apps/details?id=com.google.android.keep
https://play.google.com/store/apps/details?id=com.evernote
https://play.google.com/store/apps/details?id=com.hydrix.laurene
RealCalc Scientific Calculator
https://play.google.com/store/apps/details?id=uk.co.nickfines.RealCalc
Handy Construction Calculator
https://play.google.com/store/apps/details?id=com.sidetop.constructioncalc
https://play.google.com/store/apps/details?id=kr.sira.unit
https://play.google.com/store/apps/collection/cluster?clp=ggEICgZnb29nbGU%3D:S:ANO1ljIY5oM&gsr=CguCAQgKBmdvb2dsZQ%3D%3D:S:ANO1ljKtHE4
https://play.google.com/store/apps/details?id=com.ifttt.ifttt
https://play.google.com/store/apps/details?id=com.integromat.android