If you're looking for a platform that offers storytelling templates for creating compelling content, Subtxt could be a good fit. It offers a rich narrative structure that uses AI to help writers flesh out their stories by pointing out gaps and constructing narrative arcs. With tools like Premise Builder, Storyforms, and the Storyteller's Lexicon, Subtxt is geared for screenwriters, novelists and playwrights. It offers several pricing levels, including Subtxt ($25/month), Subtxt Pro ($45/month) and Subtxt Infinite ($250/month).
Another good option is Plotdot, an AI screenwriting assistant that helps you go from idea to final draft. It offers tools for premise definition, character creation and act structure. Plotdot is available in four pricing levels and can help you get past your creative block and turn your idea into a story you'll want to tell, with permanent worldwide commercial rights to the project.
If you're involved with making movies, SAGA is a professional writing room app with tools to create characters, storyboards and screenplays. Saga offers tools like personalized character prompts and customizable beat structures to help you build your story and characters. It also comes with a Storyboard Wizard and dynamic pre-visualization tools, so it's good for getting to the end of a script and planning scenes.
Last, Novelcrafter is a novel writing toolbox that's designed to be all-in-one writing environment with a personal Wiki (Codex) to keep track of story details. It's got several writing modes and AI tools to help you from the first word to the last. Novelcrafter offers several pricing levels and a 14-day free trial, so it's good for solo writers and those working on a series.