Allies of Navalny, President Vladimir Putin's fiercest domestic opponent, planned to use the mobile app to organise a tactical voting campaign to deal a blow to United Russia.
The Russian opposition politician Alexei Navalny's Smart Voting app is seen on a phone, in Moscow, Russia September 16, 2021.
Russia demanded this month that Apple and Google remove the app from their stores, saying a refusal to do so would be treated as meddling in its parliamentary election.
Apple and Google did not immediately respond to requests for comment.
On Thursday, Russia said official approaches had been made to the two companies' chief executives.
Ivan Zhdanov, a Navalny ally based abroad, said on Friday the removal amounted to political censorship.
Reporting by Anton Zverev and Alexander Marrow; Writing by Maria Kiselyova; Editing by Robert Birsel. »