What are some alternatives?
When comparing Lenka and Hueless, you can also consider the following products
Carbon - Create and share beautiful images of your source code.
TinType by Hipstamatic - Create vintage self portraits w/ Hipstamatic's new photo app
RNI Films - Real film filters for iPhone photographers
Formulas - Photo lab effects and custom frames
Metro Exodus - Metro Exodus is an epic, story-driven first person shooter from 4A Games that blends deadly combat and stealth with exploration and survival horror in one of the most immersive game worlds ever created.
Lens Distortion - Effects for photographers, filmmakers, and visual artists