Chinese Practice Worksheet version 1.0 allows you to practice writing any chinese characters that you like in a sentence. It does not include an individual lookup dicitionary but merely to allow you to practice writing characters. It also has a send email function, where you can provide feedback to the developer and also to take a screenshot of your own work and to attach to an email client, so that you can send to yourself.

It may not support all versions, as it tends not to support phones that have Lollipop version or older. Let us know if you are experiencing any issues with your android version.