This is a neat iPhone and iPad app for marking up photos or screenshots for friends. Skitch lets users annotate images with arrows, shapes, and text in a super simple interface. It’s a great choice for sending someone instructions on how to carry out a basic iOS task or point out an area in a picture. Skitch now includes a Photos app extension. That means you can mark up your photos without leaving the regular Photos app. Skitch is the best app for annotating photos on your iPhone and iPad.

Skitch is just one of our favorite app extensions for iPhone and iPad. We’ve collected all of our favorites here. And if you’d like to see more of our top app selections in different categories, just head on over to our Best Apps Series.

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Here are a couple of our other picks of the best app extensions for iPhone and iPad:

iMovie – Powerful video editing right from within the iPhone Photos app

iMovie has been around for a long time on the Mac and is now available on both the iPhone and iPad. The funny thing is that these mobile versions of iMovie are easier to use and deliver the same stellar results as the Mac counterpart. Rather than going into a ...

Pinterest for iPhone and iPad – Share the cool stuff you find on the internet

Pinterest is a neat way to share things you find on the web. See a product you want to recommend? Pin it using your Pinterest account. Then your friends will be able to see it. Pinterest is also a good way to share news and articles from websites. Now the ...