A lot is silly issues can be ignored in any small app, and will become big later on. If you picked good habits from past scars, stick to them. Otherwise, conce

A lot is silly issues can be ignored in any small app, and will become big later on. If you picked good habits from past scars, stick to them. Otherwise, concentrate on functionality, dogfooding on real devices that real people have as much as possible, and use profiling to find the bottlenecks that emerge when you find the time (since you’re focusing on functionality). (Exceptions to this rule exist, like if your product is some cloud service then speed might be an actual functional requirement of whatever you’re building)