A tried Keaypp too with keyword installs. Two campaigns, each with 120 installs. My app went to 22th place. After 15 days rank drop do 38. Today I add 500 US installs, regular no keywords and will see results.
At one new app I add too much installs in start, after 2-3 days and now I cant find that app anywhere in search. How much you wait before adding some installs and ratings and how much installs daily you give to new apps?
A testet androidinstalls with 300 keyword installs and after 2 days my app jump up from 40 to 23. Before that I use keyapp.top also keyword installs but ~10 days ago and I didnt sure is jump because keyapptop or androidinstalls. Still i will try this service again. One question, I submitted one app ...
If I target USA then I paid too much for installs. For some other countries that price is much lower. But can I rank in USA with installs from other countries? Which countries you recommend for app installs?