Grammar Fix vs Vaulta PDF & Study AI

GrammarFix helps you correct grammar, rewrite, translate and draft wherever you type. Choose on-device Apple Intelligence or optional Cloud AI powered by GPT. Tap to fix grammar and spelling in Messages, Mail, Notes and other apps that support custom keyboards. Rewrite in styles such as Professional, Friendly, Concise, Polite, Confident and Funny, or use presets for X, Instagram and Threads. REFINE YOUR WRITING Preview a rewrite, then give another instruction before applying it. Cloud AI can suggest editing directions based on the draft. Apply when you are happy with the result, or cancel and keep your original text. Undo restores the original after a correction or rewrite. A BETTER KEYBOARD Type with spelling suggestions and optional auto-correction. Hold Delete to repeat, double-tap Space for a period, double-tap Shift for Caps Lock, or hold Space and drag to move the cursor. Optional haptics add feedback while typing. MORE WRITING TOOLS - Translate into 10 languages - Draft and refine text with AI chat - Send your draft from the keyboard into chat with Craft - Create custom rewrite presets - Save optional background and writing preferences for personalization YOUR CHOICE OF AI On-device AI uses Apple Intelligence and processes submitted text locally. It requires iOS 26, a supported iPhone and Apple Intelligence availability. Cloud AI is optional and off by default. Selecting it sends submitted text, recent chat context and enabled personalization to App City Studios and OpenAI. Cloud editing suggestions also send the current draft. Cloud AI requires internet, is subject to service usage limits, and requires Allow Full Access when used in the keyboard. Ordinary typing does not trigger cloud AI requests. Switch back to on-device AI in Settings at any time. See our privacy policy for processing and retention details. FREE AND PREMIUM Grammar fixes and a limited number of daily AI chats are free. Premium unlocks all writing styles, translation, emoji, custom presets, rewrite refinement and chat without the free daily chat limit. Cloud service usage limits still apply. Choose Lifetime, Monthly or Yearly. Subscriptions renew automatically unless cancelled at least 24 hours before the current period ends. Manage subscriptions in your Apple Account settings. Requires iOS 18 or later. Terms of Use: https://appcitystudios.com/eula Privacy Policy: https://appcitystudios.com/privacy-policy

Vaulta is a private workspace for documents, PDFs, notes and study material. SCAN AND ORGANISE Capture paper documents with your camera, import images from Photos, open files and keep everything together in a clear document library. POWERFUL PDF TOOLS Read PDFs, search their text, reorder pages, annotate with Apple Pencil, add signatures, insert photos and export the result. Combine documents or protect exported PDFs when you need to share them. SEARCH EVERYTHING Find words across document titles, notes, OCR text and PDF pages. Open a result and jump directly to the matching page or line. CONVERT AND EXPORT Open common document and archive formats, including ZIP files. Convert content inside Vaulta and export to PDF, text, Markdown, HTML, Word-compatible RTF and other useful formats. STUDY FROM YOUR OWN FILES Create summaries, outlines, key points, quizzes and flashcards from your documents. Ask questions grounded in the material you selected. PRIVATE OFFLINE AI Download an optional on-device language model and use AI tools without sending your documents to a remote AI service. Model downloads are verified before installation. MADE FOR IPHONE AND IPAD Use a focused iPhone workflow for quick capture and an expanded iPad workspace for reading, organising and studying. Your documents remain under your control. Some system features, such as speech recognition, may use services provided by the operating system according to your device settings.