Dear Aspirant,

You will not face any problem in becoming an app developer due to your subjects. However, you have to learn app making from other resources as app making is a complex task and you can not learn with your school's computer course as it is primarily focused on basic things of programming.

If you are really interested in app making, you can contact your teachers are your school for some suggestions. Moreover, since you have mathematics as your subject you can join engineering in computer science and there you can learn many other things like web development, etc.

Hope this helps. Thank you.