Reached 300 registered users

We relaunched our Android app by late summer 2019, so a couple of month ago. This time, I tried to put some new efforts in marketing the service. I've been first playing around facebook ads and a bit of Quora ads, and Google ads on Playstore.

-> FB : With a small budget (5 dols / day) and testing different format and audiences, i only got a few install per day for a high CPI (betwen 0.8 and 2.1 dollars)
-> Quora : I got some decent response, but haven't really invested the time I should have in this channel. Need to continue experimenting with higher bidding amounts
-> Google ads : winner. I initially thought that it will not really work - may be cause I saw google ads as an untargeted mass-media approach, but got really great click through rates and number of installs per day started to really increase since then (in the 20-45 installs range for a 5 dols / day budget)