[jakobegger]

If you want to make any meaningful money, you need to give people a good reason to pay. Asking for donations is not going to result in a lot of money. I've never heard from anyone making more than 500$ a year from donations for an app.

So you will need to add some kind of restriction to make people pay for your app.

The restriction depends on the usage type of your app.

- If it is something that lots of people use everyday (like a text editor), you might get away with a nag dialog. Annoy a large number of people just a bit every day, and some of them will buy a license.

- If it is something that people use just once (eg. a file conversion app) you absolutely have to require payment before people can do what they want, or they will never come back.

- If is something that companies will want to customise, and you want to distribute source code, you probably need to charge a lot of money for it. Only few companies can afford to hire someone to write custom software, so you need to make sure you charge them enough that it is sustainable.