ParagraphAI

ParagraphAI is an AI writing assistant available as a mobile app, keyboard, and Chrome extension. It helps users fix grammar, reply to emails, create new text, and edit existing content with various stylistic filters. The platform offers free and paid subscription tiers, custom templates, and multi-language support to enhance writing efficiency and quality across different devices.

ParagraphAI is an AI writing assistant that offers features aligning with several 'must-have' and 'other' features. It provides a guided interface for various writing tasks (Fix, Reply, Create, Edit), which can be seen as specialized AI tools. It offers 'real-time editing filters' (formality, friendliness, length, rephrase, emoji) which function as creative presets and styles. The pricing page clearly indicates user authentication and subscription tiers (Free, Pro, Enterprise). The 'History' feature allows users to save and revisit texts, aligning with 'favorites-and-history'. The 'Templates' feature allows users to create and reuse their own instructions, which matches 'custom-prompt-templates'. It also supports over 40 languages, fulfilling 'multi-language-support', and is available on mobile (iOS, Android) and as a Chrome extension, indicating 'mobile-responsive-design'. While it doesn't explicitly state 'multi-model integration' or a 'tool catalog and categories' with 150+ tools, its core functionality as a guided AI writing assistant with customizable outputs and presets is strong.