You can increase the size of Icon to a required value by assigning the size property with specific double value .
Read moreWhat size should an Android app icon be?
On Android devices, launcher icons are generally 96×96, 72×72, 48×48, or 36×36 pixels (depending on the device), however Android recommends your starting artboard size should be 864×864 pixels to allow for easier tweaking.
Read moreWhat size should an app icon be?
Android recommends your starting app size to be 864×864 pixels because it will make it easier to tweak the design if need be. However, the majority of devices will use 36×36, 48×48, 72×72, or 96×96 pixels. (Note that Android app icons must be saved as PNG files, not JPEG).
Read moreWhat size is my flutter app?
How to open Dev Tools in android studio.
Read moreHow do I reduce the size of my flutter app?
Some of the other things you can do to make your app smaller are:
Read moreWhy are flutter apps so big?
By default, launching your app with flutter run , or by clicking the Play button in your IDE (as used in Test drive and Write your first Flutter app), generates a debug build of the Flutter app. The app size of a debug build is large due to the debugging overhead that allows for hot reload and source-level debugging .
Read moreHow much does a flutter app cost?
Moreover, the application has a minimal visual design with a user-friendly interface, allowing users to navigate easily. Simple flutter applications take one to three months, and the average cost is around $50 000 .
Read more