If you're willing to compile it, Aseprite is a great option as well.
check my website for the latest tips - always updating with new content!
Founded in 2011, Playerize is the first worldwide growth and monetization platform built exclusively for the game industry. Our offices are in Vancouver, BC and San Francisco, CA.
Playerize is a rapidly growing company that specializes in monetization and high quality user acquisition for the social and mobile gaming industry. Our acquisition of the industry’s oldest platform for scaling a social game, SuperRewards, allowed us to leverage deep strategic knowledge as we build tomorrow’s growth solution for game and app developers. It is our a mission to re-imagine what it means to have a growth partner.
Our products encompass a suite of tools for customers to acquire users and monetize them across the globe.