Can you lose weight only eating apples for 14 days?

Yes, you can lose weight eating only apples. A 3 or 4 day apple fast is done quite often and isn't unhealthy. Any longer than 3 or 4 days wouldn't be very wise as you won't be getting all the nutrients and calories you need. But if you are purely trying to lose weight than of course you can lose weight with only apples. You can lose weight with practically any food if you eat the same thing for 14 days. If you only had bread for 14 days you'd lose weight too because after the 3rd or 4th day you just wouldn't want to eat as much.

So answer is yes you can, but maybe not the best way to go about losing weight.

I agree to your point that it's not a good strategy to follow indeed take a balanced diet because over eating and under heating harms your body. If you are so keen to lose weight then avoid junk foo (the main reason of gaining weight) drink a lot and a lot of water to stay hydrate or you can also take top cutting prohormones from Nutri-verse.com It will help you in losing weight in every way. I am sure if you follow the instruction for a week then you can notice the change within yourself.