iShowU

I hope the developer fixes external monitor change issues. (when I set the target screen as the external monitor and disconnect the screen, the app is not working properly)

Almost great, but with one glaring issue - the confusion between “canvas size” and “selected area”. As you’d expect, you can select an area on the screen to record. However, unintuitively, the resulting video will be the “canvas size”, which is a completely different dimension that is seemingly unrelated to the selected size. Regardless of the area you intend to record (screen, application, specific area) the output will be the “canvas size” dimension, and it’s totally unclear how to actually set that dimension. It’s been very sporadic for me - sometimes it feels like it’s synced to the selected area, sometimes it is way off. More often than not, it doesn’t even have the same aspect ratio, resulting in stretched videos. If this app can solve that major issue, it’ll become a serious competitor with Screenflow, thanks to its ability to record system sound.

No real way to capture iPhone screen, or no indication nor article on how to do it.