In that case the best you can do is keep a Mac for coding and building those iOS apps and buy another laptop for everything else you do, if you don't only do apps. Move everything off the Mac so that it won't be your primary platform or you'll still be locked into Apple.

Years ago I was about to have to do some iOS app for a customer and I was considering buying a Mac Mini especially for that project. But I would have kept everything else on my Ubuntu laptop from HP. The Mac would have been on only to code the apps. Then I found somebody else to do those apps for me and I saved a lot of money.