I had to choose between the TomTom Italy (34,99 Euro) and the TomTom Western Europe (49,99 Euro): well, for 15 Euros more I decided for the latter, looking forward to go around the Europe later, but, because it was late night I delayed the purchase for the day after.
Surprise SurpriseThe few days after I go on the iTunes store to check the app and... surprise, the price jumped to 69,99 Euros! 20 Euros more, wow!
So, discouraged about the thing I started to think that it was all my fault and that probably I should have bought before, when there was the previous promotion (?): but I haven't seen anywhere about a promotion on the TomTom app, how can I figure out there was one?!
So, even if I was still tempted to buy it, I've checked a bit online to find out if TomTom had published any promotion about it's iPhone app... nothing.
Data mattersSo, when I was about to buy the app at the new price it comes back to my mind that a site that tracks all the price changes in the App Store, so looking for another promotion from TomTom I gave it a try.
Filtering all the apps (in the right market), I've found this small table, in the corner:
Collecting and playing a bit with the data I manage to have a representation of the trend of the changes of the app on the store:
Starting from the statement above let's filter out the data by week days and see if I have any chance to buy the app with a lower price:
=COUNT(FILTER(C2:C;C2:C=0;D2:D="Positive"))The spreadsheet starts to count only the positive and negative change occurrencies in the data for each weekday.*
At the end something more interesting comes out of the data:
ConclusionsSo, because it was Wednesday when the price was 69,99 Euros there's still a small chance to buy the app for 20 Euros less the day after: maybe it was worth to try for a 30% sale...
And there it is: the day after it comes the price drop again and I've got now my TomTom app at a very good price!
This the story on why study the data, sometimes, it's worth. At least 20 Euros.
Now just remember to buy the TomTom app only on Thursdays!
* The Column "C" had the Weekday number (0->6) and the Column "D" was a boolean column filled with the strings "Positive" and "Negative".