Heroicons UI make the perfect fit for any in-app UI. Their soft edges and consistent 2 pixel stroke give them a friendly pesonality that work great for both professional and playful UI's.
I’ve been working on this set for a while and decided to make them available for free under the MIT license.
Each icon in this set of 104 glyphs is designed in a 24 x 24 pixel grid and maintain a consistent visual proportion when next to each other.
I plan to continue growing this set so feel free to sign up below to get notified when updates are available.
Psst...if you're looking for an icon set more suitable for your marketing page, check out Heroicons for marketing, a unique set of icons for your marketing website that make it easy to customize with CSS to better align to your brand. They make a great companion to Heroicons UI.