I hold the F1 visa and got some incomings from Apple by selling the apps on its App store.

Now I know I should file the 1040NR with the schedule C, right?

However, Apple will not send us developers any tax form such as 1099.
How could I file my tax return? Thanks in advance!

Even if you do not get 1099-misc, report the income on schedule C or C-EZ. In your case, if you have not completed 5 years on F-1, this is not subject to 15.3% SE tax.

Thanks MutatA!