Update an app if an update is available but Play Store doesn't show update option. I installed the earlier version of the Respawnables and now, I want to update the app. But there is no "Update" option  available on the app's page  in  Play Store. 

How do I update the app?
There are two possibility for that.


First is that you have disabled it.
second is signing key of app has been changed by developer or the place from where you downloaded.
Third may be that it is no longer available in your country.
Fourth is ( if this paid app ) that you did not buy it from play store.


Further if you want to update from play store you need play store version installed in your phone.