The game was downloaded and installed by over 50M users and its latest stable release was on Aug 24, 2019. There are in-app purchases and adverts in this application. The statistics show that the app is popular mostly among Samsung and Lenovo users.
Get the free .apk file of My Dolphin Show 2.19.1 and have a look at users' reviews on Droid Informer. This installer takes up 95 MB of disk space and it runs on Android devices 4.2 and above.
Some users state that there are some drawbacks, they are connection issues and too many ads.