[sippndipp]

You mention to spend on user acquisition when you're close to the Top 10 position, but how can you tell when you're close to the Top 10? Do you just do it on your own data ratios of signups / review conversions and then look at other app review quantities?

[9elements]

We have our own KPI dashboard. For Apple: We track track manually and we're also using http://www.appfigures.com/

[s04p]

try appfigures or similar tools