Hey you can take a look for yourself, I’ve plotted the user numbers that we know in this spreadsheet
https://docs.google.com/spreadsheets/d/1hLJ9fsrHi725pqYRDiBUTPAclsFV9TnIOzYycHvHLQE/edit?usp=sharing
but to answer your question, yes there was the Android app launched on the 29th September & the number of users who signed up each day in the following few days way much higher than average