Some of the only data we have is total downloads on the play store, of which official reddit is 100 mil+
And an aggregate of third party apps are 15 mil+ (Apollo 5, Rif 5, boost 1 relay 1, sync 1, and a number of equal or smaller apps and pro/paid editions)
Unsure about iOS numbers and website
These numbers have so many caviats that theyre almost useless
But they could give a rough estimate of ~20% given some assumption
- Anyone using third party also downloaded official at some point
- Third party has higher retention, due to the official app being where new redditors most likely start while third party most likely gets "new" users that already used reddit a while
One happy coincide is that you can almost fill that void with chatgpt :p it's a fairly competent reddit thread simulator (not too surprising giving reddit is part of its training data)