DoCube vs KeycoBoard

DoCube is a multi-format reader and personal knowledge base built for deep reading. Bring PDFs, EPUBs, local videos, web snapshots, Markdown, and organized scanned documents into one library. Annotate, link, search, translate, export, and review while you read or watch. Your materials are not merely stored—they gradually become knowledge you can retrieve, connect, and remember. 【Deep Reading Across Formats】 DoCube supports PDFs, EPUBs, local videos, offline webpages, Markdown, and parsed documents. Whether you work with research papers, ebooks, web articles, course videos, lectures, interviews, or your own Markdown notes, you can read, watch, and manage them together in DoCube. 【Deep Study for Video】 Import local videos and study courses, lectures, and interviews as deeply as documents. DoCube can read embedded subtitles and, on supported devices, generate subtitles for videos that do not have them. Search subtitles; switch between original, translated, and bilingual views; annotate subtitles; use chapter outlines, playback speeds, and A/B looping. Open a search result, annotation, or chapter to return to the exact moment, turning video into knowledge you can retrieve, connect, and review. 【Multi-Tab Reading】 Open multiple documents and videos in tabs, just like a browser, and switch quickly between materials. Read a paper, compare references, watch a course, or return to where you left off without losing context. 【Annotations and Notes in Context】 Use highlights, underlines, strikethroughs, quotations, links, and Markdown notes directly on source text or at a precise location in video subtitles. Your thinking stays connected to its context. 【Link Materials Together】 DoCube can link an annotation in a document or video to a precise location in another resource. Connect scattered chapters, paragraphs, webpages, video clips, and notes into your own paths through knowledge. 【Search What You Have Read and Watched】 Search not only titles and body text, but also video subtitles, highlights, quotations, links, notes, and cards. Anything you have read, watched, marked, or written can help you find the right material again. 【Keep Reading in Other Languages】 Translate selected text while reading. Some document types support full-document translation and translated exports, while videos support subtitle translation and original, translated, or bilingual display. Read foreign papers, webpages, ebooks, and course videos without constantly switching tools. 【From Annotation to Review】 Turn important content from documents and videos into review cards. Flip cards, mask cards, and review plans bring what you have read and watched back at the right time, instead of letting it disappear after you finish. 【Export and Sync】 Export document content and translations to common formats, including bilingual versions. DoCube is available on iPhone, iPad, and Mac, with iCloud sync and local Wi-Fi transfer. Ideal for: - People who read research papers and professional materials - Learners organizing PDFs, EPUBs, webpages, Markdown, and videos - People who study long-term with course, lecture, and interview videos - Deep readers who want annotations, notes, and review in one loop - Anyone building a personal knowledge base instead of merely collecting files The free version manages up to 5 documents and lets you experience the core reading and knowledge-management workflow. Upgrade to Pro to remove the document limit and build an unrestricted personal library.

KeycoBoard is an iOS keyboard extension built as an AI rewrite toolbox. It's designed for instant, in-place rewriting while you type—your AI copilot inside the iOS keyboard. KeycoBoard does not provide a basic typing keyboard and won't replace your primary keyboard. Instead, it focuses on a seamless, instant AI rewrite experience, freeing you from the tedious cycle of switching between AI apps and your text field to copy and paste. THE AI REWRITE CONSOLE Control the output like a mixing board—no prompts, no chat. Use sliders to set your rewrite goal and change the expression without changing the meaning: - Length: Effortlessly control the text length, from a concise summary to a detailed expansion. - Depth: Match your audience, from simple, kindergarten-level explanations to expert-grade industry jargon. Use analogies for a child; use terminology for your boss. - Tone: Switch between casual, meme-worthy slang and formal, official language, perfect for both friendly chats and professional settings. - Emotion: Infuse your words with the right emotional temperature, from objective and neutral to passionate or even extreme. - Structure: Turn scattered thoughts into organized, numbered lists—or keep it conversational and freeform. - Emoji: Adjust the density of emojis in your text, from completely clean to a full-on "emoji bomb." VOICE INPUT & AUTO-REWRITE Tap the microphone and speak — KeycoBoard transcribes your words instantly. But unlike basic dictation, your voice input flows directly into the Rewrite Console: the AI automatically polishes, adjusts tone, or translates based on your slider settings. Speak casually, get professional output. No extra steps. INSTANT TRANSLATION Select text and translate with one tap—the result replaces the original right in the input field. Reorder, show, or hide languages in Settings to fit your workflow. Supported languages include: - English - Spanish (Español) - French (Français) - German (Deutsch) - Italian (Italiano) - Chinese (中文) - Japanese (日本語) - Korean (한국어) - Russian (Русский) - Cantonese (廣東話) SEAMLESS INTEGRATION While typing in any app, simply tap the "Globe" icon to switch to KeycoBoard and start enhancing the text in your current input field. The AI-generated result updates in-place, instantly. For free users, we offer access to our standard AI models with a monthly usage limit. We also offer a Pro subscription with the following benefits: - Unlimited usage - Custom rewrite instructions - Access to advanced models Payment will be charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. You can manage and cancel your subscription in your App Store account settings after purchase. PRIVACY & PERMISSIONS "Allow Full Access" is required for AI features to work. Keyboard extensions need this permission to perform secure network requests. We do not record or store your input. Your text is read only to build a one-time request to the AI service. After processing, the result is returned to you and neither the original nor the output is retained on our servers. Privacy Policy: https://www.keycoboard.com/privacy Terms of Service: https://www.keycoboard.com/terms