DB40X vs Clover

DB40X is a high-precision scientific calculator compatible with DB48X and inspired by the legendary HP48 series from Hewlett-Packard. It is not an emulator, but a redesign from scratch, which is faster, and delivers never seen before capabilities like computations in arbitrary precision. Like the original HP48, DB40X supports an unlimited stack, RPN and algebraic operations, complex numbers, based numbers, vectors, matrices, text, symbolic computations, numerical solving and integration, graphing and plotting, statistics, engineering units, and well over 1000 built-in functions. DB40X adds several HP50G capabilities, including a library of equations and constants covering mathematics, physics or chemistry. Using modern technologies, DB40X goes well beyond the original HP48 in many ways: - It is significantly faster, uses less memory, and features a higher-resolution 240x400 pixels graphical display. - Integer and decimal values can have an arbitrarily large number of digits, so you can compute log(pi) with 200 digits in a few keystrokes. - The six function keys feature up to three function per key, giving quick access to up to 18 related functions at a time. - Complex numbers can mix and match polar and rectangular form. - Symbolic operations extend to complex numbers, vectors and matrices. - Based numbers can be in any base from 2 to 36, and support any number of bits, making it easy to emulate a 23-bit or 512-bit processor. - Text is represented using Unicode instead of the proprietary HP encoding, facilitating data exchange with the rest of the world. - Multiple graphs can be distinguished using bitmap patterns. - Engineering units include all the modern evolutions of the SI system, and can be configured by the user, e.g. to integrate currency units with the exchange rate du jour. Converting between USD/hour and EUR/day has never been so easy! - A built-in hyperlinked help system documents functions simply by holding the corresponding key, and combine a quick start guide, a user manual and a reference manual. DB40X will run many user RPL programs as is. However, since it is not an emulator, it will not run any HP binary object, and notably will not run HP48 games or anything involving system RPL. Version 0.7.14 is an early-access release. Please consult https://github.com/c3d/db48x/blob/stable/doc/5-Unimplemented.md for a list of HP48 commands that are not yet implemented. DB40X is part of a family of compatible RPL calculators that include DB48X and DB50X. DB40X lacks the ability to write programs or data to disk, and RPL programs are limited to 40K.

Clover is a third-party iOS client for TriliumNext Notes, designed reading-first: bring the knowledge base on your self-hosted server to your phone — readable offline, fully searchable. All core features are free. Clover Pro (one-time purchase or subscription): multiple servers, unlimited AI chats, alternate icons, home and lock screen widgets (today's journal, continue reading, quick capture), and Spotlight search. No ads. No server yet? Start with the built-in Local Vault and upload everything with one tap once you connect a Trilium server. Reading • Native typography with adjustable paper colour, font and size • Continuous multi-chapter reading for book notes, progress remembered • Images, PDF, Office documents, code highlighting, Mermaid, math • Full-text search that works for any language, including CJK Writing • Rich-text editor fully compatible with desktop Trilium • Journal: one note per day, capture fast; voice-to-text input • Share extension: save web pages, text and images from any app • Every write is queued first — nothing is lost offline, conflicts never overwrite Sync & security • Same login session as the Trilium web UI, with TOTP, SSO and Cloudflare Access • Incremental sync + live updates (foreground WebSocket), low-power and Wi-Fi-only policies • Face ID lock; protected notes unlock separately and never touch the disk • AI chat is powered by your own server — Clover stores no API keys Multiple accounts / servers, three-column iPad layout, localised in English, 简体中文, 繁體中文 and 日本語. Clover is an independent third-party client, not affiliated with the TriliumNext project. Syncing requires a TriliumNext server (0.99+); local-only use works without one. English Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ 简体中文 使用条款（EULA）：https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ 繁體中文 使用條款（EULA）：https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ 日本語 利用規約（EULA）：https://www.apple.com/legal/internet-services/itunes/dev/stdeula/