Question: Is there a writing app that provides AI-powered assistance, such as rewording paragraphs and fixing grammar, to help me improve my writing?

If you're looking for an AI writing assistant to help you improve your writing, Wordvice AI is a full-featured tool with a variety of revision tools. It's got an AI proofreader, paraphraser, translator and summarizer, which makes it a good choice for researchers, students, content writers and businesses. It offers subscription plans, including a free Basic Plan, for different needs and budgets.

Another good option is Wordtune. This AI writing assistant is geared to help you work more efficiently and write better, regardless of the medium. It's got tools like Rewrite for rewriting without errors, AI Writing Assistant for writing prompts you can customize, and a Summarizer to shorten long documents. Wordtune integrates with Google Calendar, Microsoft Word and Slack, and is available on desktop, mobile and web interfaces.

If you want a tool that's more focused on tone and human-sounding writing, check out Writetone. It's got paraphrasing, grammar checking, text-to-voice conversion and citation generation. Writetone has a variety of tools for different writing tasks, like emails, blog posts and academic papers, and can be used as a Chrome extension or through MS Word integration. It's got tiered pricing, including a free plan and a Plus plan for $4.99/month.