SigiCalc vs Santellissi

SigiCalc is a fast, clean RPN calculator that draws your functions. Enter a calculation the RPN way – numbers first, then the operation – and as soon as your expression contains X, tap Graph to see it plotted. No equals key, no parentheses, no fuss. REAL RPN • Classic stack-based entry with Enter, Undo and All Clear • Keys light up only when the stack has enough values – you can't make an invalid entry • The display shows your result, the whole expression in normal notation and the raw stack LIVE FUNCTION GRAPHS • Use X as a variable and plot the result instantly • Pinch to zoom, drag to pan, tap to zoom in, double-tap to reset • Touch and hold to read the exact x / y value on the curve • Discontinuities like tan(x) or 1/x are drawn correctly – no misleading vertical lines SCIENTIFIC FUNCTIONS sin, cos, tan and their inverses, natural log, square, square root, reciprocal, sign change and π DESIGNED FOR TODAY'S DEVICES • Light and Dark Mode, portrait and landscape • iPad: calculator and live graph side by side • Smooth animations and haptic feedback PRIVATE BY DESIGN SigiCalc works entirely on your device. No account, no network, no ads, no tracking. Example: X ↲ X sin × plots x · sin(x). What changed versus your text and why: - Leads with a benefit, not a category: "draws your functions" is the hook; "simple and practical graphical" told the reader nothing they'd search for. - Explains RPN in one sentence for people who don't know it, since that's the biggest reason someone bounces. - Bulleted feature blocks — App Store descriptions are skimmed, and the capitalised headings scan well in the store's plain-text rendering. - Adds Dark Mode / iPad / privacy, all of which are new in 3.0 and are things reviewers and users look for. - Fixed "polish" → "Polish" and "equation" → "expression" (you plot expressions, not equations).

Santellissi 3.0 — A Sanctuary for Books, Learning, and Reflection Welcome to Santellissi, a reading and study environment that brings together books, Scripture, document tools, personal notes, and an AI companion. Explore Your Library Discover the Great Books Explorer and organize your reading experience. Import PDF documents, open books, and navigate through their pages in a dedicated reading environment. Read and Study Scripture Explore the Bible through Santellissi's reading tools. Import additional PDF editions and keep your study materials together in one place. Build Your Personal Collection of Passages Select passages, save bookmarks, capture portions of documents, and add your own notes and reflections. Return to important readings through your annotated collection. Prepare Books with the Bookbinder Combine PDF documents, split facing-page scans, adjust page formats, and use supported on-device text recognition to make scanned material easier to work with. Meet Brother Lumi Visit the AI Sanctuary, where Brother Lumi provides a conversational space for questions, exploration, and reflection. Santellissi includes controls for interacting with a GGUF-based AI engine, including response continuation and speech playback. A Place to Read, Think, and Explore Whether you are studying literature, examining Scripture, organizing documents, or experimenting with AI-assisted conversation, Santellissi brings these activities into one learning environment. Welcome to Santellissi — your digital sanctuary for reading and discovery. **Santellissi 2.0 — Read, Study, Reflect, and Create** Santellissi brings sacred reading, document study, personal annotations, and an offline AI study companion together in one place. Originally inspired by the idea of a “holy ellipsis”—connecting passages scattered across different books and chapters—Santellissi has grown into a reading and study workspace for students, teachers, preachers, researchers, and curious readers. **Explore Catholic Scripture and Documents** - Browse Catholic Bible editions and other included reading materials. - Import PDF books and documents from Files. - Search within documents and navigate matching passages. - Zoom, read, and select material for closer study. **Create Your Own Annotated Notebook** - Capture passages and page images from your reading. - Assign references to your selections. - Add personal commentary, questions, and reflections. - Organize study selections into a document. - Export annotated work for sharing, printing, or further study. **Meet Brother Lumi** Brother Lumi is an AI companion powered by a local GGUF language model. Ask questions, explore ideas, and practice conversation without sending your prompts to a remote AI service. Brother Lumi supports typed interaction, spoken responses, and multilingual language practice. Speech recognition and voice features may depend on device capabilities and available language resources. **Built for Learning** Santellissi combines a PDF reader, page cropping, annotations, document preparation, and AI-assisted discussion in a single learning environment. Whether you are preparing a lesson, studying Scripture, practicing another language, or gathering passages for a presentation, Santellissi helps you turn reading into meaningful work. Santellissi is an independent educational application. AI-generated answers may contain errors and should be checked against authoritative sources, especially for theological or historical questions.