What are some alternatives?
When comparing ConceptKicker and LetterNote, you can also consider the following products
Art Bloom - Canvas prints designed by independent artists.
Rotio Compass - The most intuitive design tool 📐✏️
Artstarter - Kickstarter for unique art!
Studio Case - A modular system to keep your design tools organized.
Mapiful - Create & order custom printed maps of your favorite places
PencilCase - Transform your designs into native iOS apps in a heartbeat.