Sketch is our primary UI Design tool. We've been using it since it's infancy, and honestly, there's nothing out there that comes close*. If you’re using Photoshop or Illustrator to design screens for digital products, you need to stop it**.
* R.I.P. Adobe Fireworks. 🍾 For over a decade, we were just as loyal to what I would call Sketch's predecessor— the only tool in its time that was designed for designing on-screen digital products.
** Designers will fight this battle until there's nothing left to argue about. Photoshop has been a thorn in my side since the beginning; it's probably fantastic for editing photos, but so is the $2.99 Polarr app. 😁