reMarkable mobile vs DB48X

Expand your reMarkable universe: Make sure to pair your paper tablet with an account at my.remarkable.com before logging in to the app. Find login details for both in Account settings on the paper tablet. Get organized: Use the app to get an overview of your content, with tags and favorite documents. Create folders for collecting notebooks and files by topic. Save one for each project, or separate work and personal notes. This will help you find and arrange the content stored on your paper tablet with Search. You can also remove clutter by deleting any digital paper that has piled up. Fresh paper in your pocket: Our notebooks take full advantage of the flexibility of digital paper for taking notes, typing, and sketching. All of your content is always available, and you can both make fresh notebooks, folders, and add note pages in PDFs and ebooks. Take focused notes, anywhere: Make your ideas easier to refine and share on the go. Our cloud storage allows you to sync your content and pick up right where you left off on your paper tablet. Use the app to create new notebooks or quick sheets, and add blank note pages to existing documents. Checkboxes in the formatting menu are great for to-do lists. Type pages of notes, or quickly write out shorter lists to review and annotate later on your reMarkable. 
 Download the app to your mobile to make the most of your paper tablet. Discover a new way to take notes.

DB48X is a new high-precision scientific calculator 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, DB48X 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. DB48X adds several HP50G capabilities, including a library of equations and constants covering mathematics, physics or chemistry. Using modern technologies, DB48X 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 (DB50X adds the ability to use colors) - 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. DB48X 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. DB48X is part of a family of compatible RPL calculators that include the free DB40X and the color DB50X.