It shows the “Initial Release” date was Dec 16, 2011 and current version.
There was another website which listed every update and the time of update - but I cannot recall the name (one of the secondary appstores like appbrain etc. ?).
appannie.com will also show you the “Daily Ranks” - the ranking in various countries.
You can also see the graph for a specific country (since Google Play ranking seems to be segregated by country so an app’s rise and fall curve seem to be relatively independent in the different country-specific Google Play stores).
However for Rank History you will have to signup (free).
There is another similar website - distimo.com - they also have similar stats - I have not used them, if you test them out, please post your impressions.