Since I had a constant feeling of "update-spam" regarding my apps, I decided to track the data for almost 2 months (March 16 - May 7). I did so for my 2 mobile devices, 1 iPhone 5 running iOS 9, 1 Nexus 7 tablet running Android 6, writing down the number of updates, installed Apps and OS version usually every two days (I did not manage to do so every two days). The Nexus 7 had 94 apps installed the whole time, the iPhone 5 57, with 58 apps for a few days. These are the results:
- In average there were 2 app updates on iOS and 3 on Android per day
- In regard to the apps installed that made up 3% of the apps installed per day
- In total there were 104 app updates on iOS and 164 on Android
- In total almost every app had 2 updates in 2 months
You can find the spreadsheet with the full collected data here.
You could argue that 2 updates for every app in 2 months is not so much and you would be right. I have not collected data on this, but the amount of updates is not spread across all apps, as some of my installed apps' last updates date back to December 2015 or even back to March 2015.
I have a similar experience with the program FileZilla. I use it once in a while (maybe once every 1-2 weeeks) and almost everytime I open it, it asks me if I wish to install the latest update.
For me, as a customer, having 2-3 so many visible(!) updates is really unbelievably annoying. Therefore my advice would be: If you plan on releasing often, also take into consideration what kind of product you have. Last but not least, try to make your updates as silent as possible.