Faces iMake - Right Brain Creativity

Open-ended collage maker teaches symbolism and revs up creativity
Bottom Line: Faces iMake - Right Brain Creativity is a don't-miss art app that encourages creativity at the same time as modeling it.
Popplet

Minimalist mind mapping to organize ideas
Bottom Line: Easy-to-use idea organizer can help with simple mind mapping.
Adobe Capture CC

Magical design tool extracts colors, patterns, and more from images
Bottom Line: The rare combo of "wow" factor and utility, this tool help students recognize and use the designed world around them.
Adobe Photoshop Mix - Cut out, combine, create

Impressive photo-editing app focuses on compositing, blending imagery
Bottom Line: While it's tackling a slightly niche design need (blending, layering, compositing photos), Photoshop Mix is an incredible tool that makes these processes shockingly simple on mobile devices.
Canva for Education

Create, collaborate, and share with versatile design tool
Bottom Line: From interactive presentations to group collaboration to parent communication, Canva is a one-stop shop for a variety of classroom tasks.
The Noun Project

Think in pictures with vibrant visual language everyone can understand
Bottom Line: It's a neat, well-executed concept with lots of possibilities for learning, imagining, and creating.
Flickr

Popular sharing site potentially useful as a classroom photo resource
Bottom Line: Make use of some incredible photographs in your classroom, but don't let students wander astray on the site.
Smore

Create and send simple newsletters and flyers
Bottom Line: This is a fast way to fashion basic newsletters and flyers, but it isn't quite as flashy as the competition.
Photoshop Express Photo Editor

Top-notch photo editor helps perfect pics for creative projects
Bottom Line: This is a powerful, free creation tool from the industry leader in photo editing.
Sway

Create dynamic visual presentations on flexible storytelling platform
Bottom Line: A seamless transition from design to presentation makes Sway a great fit for presenting carefully curated content.
Procreate

Outstanding art tool supports the workflow of seasoned digital painters
Bottom Line: For iPads, this is a best-in-class tool with enough pro-level features and technology, and some nice support resources.
Easelly

Think critically, share creatively with infographic-creation tool
Bottom Line: Even though the basic themes and images are limited, when prepared well, this tool can help students connect with content in a meaningful way.
Infogr.am

Snazzy, easy infographic maker visually pleasing but lacks design help
Bottom Line: The site is a great asset for classroom presentations and analyzing data, but educators need to provide guidance to ensure students learn while using it.
Lucidpress

Collaborative publishing and design tool has lots of options, templates
Bottom Line: An easy-to-use mash-up of InDesign and Google Drive, Lucidpress fills a niche for publication creation and collaboration.
Piktochart

Create sleek media with cool templates, powerful features
Bottom Line: An easy-to-use tool for producing and sharing great visual content in the classroom.
Autodesk Sketchbook

Impressive creation tool for teens serious about art
Bottom Line: Gives students easy access to professional tools for creating digital art.
Venngage

Create impressive infographics with ease
Bottom Line: Surprisingly simple way for students to think critically and communicate ideas in an appealing, visual format, but could be a bit more edu-friendly with extra educator/student supports.
Adobe Express

Enjoyable and practical design tool supports creators of all ages
Bottom Line: Beautiful templates and user-friendly tools empower students to turn their creative ideas into professional-looking media.
PicCollage Grid & Photo Editor

Versatile, intuitive, engaging collage maker yields impressive designs
Bottom Line: With some privacy setup, and possibly upgrading to the paid version, this can be an excellent design tool for creating custom collages, teaching graphic design, layout, and photo editing.
PicMonkey Photo Editor Design

Reliable photo editor built for design and social sharing
Bottom Line: A great, social media-friendly option for teaching teens design, layout, and photo editing, but the paid version is more competitive with other tools.
Grafio 3 - Diagram Maker

Flexible app transforms sketches into pro-level designs and diagrams
Bottom Line: A terrific choice for creating simple diagrams or presentations on iOS.