In the first place, we try before we buy. So, freemium apps install fee to upgrade after download allows us to. Given, good netiquette to use free software. Then, take the free trial period.
Freemium Free Install Fee Upgrade Apps
App is a mobile app that is free to download, install, and use. But, has premium features users must pay to unlock or use.
Business model relies on In App Purchases (IAP) to generate revenue. Users can pay to have ads removed from a mobile app or for items to use in games and other things.
Provides consumers the opportunity to make an informed decision about a mobile app before they invest money into it. They can use a functional version without paying. Many free trials have limited functionality.
Everyone likes the price of free because it costs them nothing. The caveat to the price of a free mobile app is advertising. Many display some form of advertising.
Use freemium apps because we can upgrade when we are ready.