Matrix vs Santellissi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Matrix
Read full descriptionHide full description
The MatrixAnalysis is carefully designed to be a simple and elegant app. This app has tools to help you analyze matrices like finding eigenvalues and eigenvectors, diagonalization, QR, SLU, LU factorization. This app can also be used to do matrix operations like, finding inverse, determinant, dot product, cross product, and much more. You can also do elementwise operations and scalar operations. Want to do fast fourier transform (FFT) or inverse fourier transform (IFFT), this app is capable of IFFT Want to find an pseudo inverse of a non-square matrix, this app has you covered Want to know a rotation matrix for a given angle or rotate a vector by the given angle? This app has you covered. The expressions and the solutions are displayed in beautiful mathematical way. Once the expressions are solved, a beautifully written solutions are created that you can share with other or save it locally. It automatically saves your hard work locally on your device so you can come back and pick up from where you left off as your great effort will not be lost. There is also a Study page to help you with learning some important matrix vector formulas and some useful technique. This is an app for all student groups. From high school to college to university students. Be creative. Enjoy the app!
Santellissi
Read full descriptionHide full description
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.
Screenshots
Verdict
The clearest difference is ads: Santellissi at none against Matrix's shown. Matrix's advantage is iOS requirement (15.1 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Matrix ships an update every 5 weeks, Santellissi every 2 months. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | Matrix | Santellissi |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 32 MB | 1.2 GB |
| Age rating | 4+ | 4+ |
| Developer | Om Prakash Chapagain | Luis Acevedo-Arreguin |
In-app purchases
Matrix
No in-app purchases
Santellissi
No in-app purchases









