Blackboard-Chalk writing board is an iPhone application developed by Sujuan Chen. It falls under the category of Business & Productivity and is available for free.

This app provides users with a chalkboard-like drawing tool that allows them to create drawings and sketches with realistic textures. It can be used as a scratch paper to record inspiration and share ideas. Additionally, it is also suitable for children who are learning to draw or enjoy doodling.

The app offers various features, including the ability to draw on a blackboard with different colored chalks. Users can choose whether to enable the chalk brush texture, and they can create as many blackboards as they want without any limitations. The brush size is adjustable, and there are four blackboard background styles available.

Furthermore, users can easily share their creations on popular social media platforms such as Instagram, Twitter, and Facebook.

Please note that for any inquiries or concerns, users can contact the developer via Gmail at