i41CX+ vs RC Model Manager

i41CX+ is an advanced programmable and expandable RPN scientific calculator with a virtual thermal printer/plotter and workstation-class CAS capabilities that is far beyond a mere replica of the original. In addition to being functionally equivalent to the world-renowned HP-41CX and providing access to its entire library of modules and programs, i41CX+ is enhanced with iOS and hardware features, keyboard overlays, rich set of import and export capabilities, traditional and upbeat diverse set of skins, complete color control, iCloud support, and much more. The i41CX+ CAS is a full implementation of REDUCE. It's like having Mathematica or the computational engine of Wolfram Alpha in your pocket and, best of all, it runs natively so no internet connection is required. The CAS is fully programmable and provides the ability to reuse previous results in computations. Moreover, the CAS has full access to the calculator registers so it is possible to combine RPN programs with CAS programs. This is the finest and most powerful scientific/engineering/financial calculator for iOS devices bar none. CALCULATOR FEATURES: • RPN logic with a 4 element deep memory stack • 319 main and 600 extended memory registers • Over 400 built-in functions, including over 100 functions created specifically for i41CX+ • Time, calendar, alarm, and stopwatch functions • Four module ports provide access to HP-41 expansion pacs • Rich set of functions and algorithms: numerical, mathematical, statistical, complex, matrix, numerical integration, curve fitting, solutions to equations, and much more • Powerful, flexible, and programmable Computer Algebra System (CAS) supporting symbolic, arbitrary precision, scalar, vector and matrix algebra calculations, 2D/3D plotting, and much more • Full-screen text editor with configurable font style and size, color scheme, a user configurable macro keyboard, and a numerical keyboard • Access to the entire HP-41 library of solutions for science, mathematics, statistics, engineering, business, financial, surveying, medicine, real estate, and many other domains • Programmable - virtually unlimited number of lines • User definable keyboard • Ability to operate the calculator using a Bluetooth keyboard • Device integration: external display mirroring, copy and paste, in-app mail, system keyboard, GPS, accelerometer, digital compass, time and date synchronization, AirPrint, and much more • Virtually unlimited data and program storage capacity using the device's flash memory for local storage • Import/export data, programs, overlays, modules, etc. via the web, email, and iTunes file sharing • iCloud syncing of files and preference settings • iOS 8 Notification Center widget • 43 available keyboard overlays and support for user created overlays • Sound support including synthetic tones and interface sounds • Support for calculator skins and optional mini stack display • Adjustable calculator speed, sound volume, and display colors • Usage & Examples table with usage tips and examples • Quick Reference Guide of all built-in functions • CAS Quick Reference with all built-in functions, operators, switches, and packages • Beautiful and clean user interface PRINTER FEATURES: • Support for printing, plotting, graphics, and special characters • User configurable and programmable print color • Export printer output via email, clipboard, or AirPrint • Ability to save a JPEG image of the paper roll to the device's photo album *********************************************************** A comprehensive FAQ and Mini-Manual are available at http://alsoftiphone.com/i41CXplus. Please don't hesitate to use the "Contact Us" link there if you cannot find the answers or information that you seek. Thank you.

RC Model Manager is your digital logbook and setup companion for radio‑controlled models. Keep every model, transmitter, battery, and component organized in one place—at the field, on the bench, and at home. Designed specifically for RC enthusiasts, RC Model Manager helps you track the details that matter so you can spend less time managing gear and more time having fun! KEY FEATURES • Aircraft Management - Store model name, type (airplane, heli, drone, car, etc.), photos, notes, and FAA registration info. - Track engines, ESCs, gyros, receivers, servos, and batteries linked to each aircraft. • Transmitter & Radio Setup - Keep a record of each transmitter, firmware, and channels. - Log radio configurations and switch assignments so you always know what each switch does on every model. • Flight Logs - Record flight time, location, and notes for each model. - See total flights, total time, average flight duration, and best flights at a glance. • Maintenance & Documentation - Add notes for setup changes, repairs, tuning, and field observations. - PRO users can attach photos for visual documentation of models, components, and builds. FREE VS PRO • FREE: - Up to 3 aircraft - 1 transmitter - Basic logging and notes • PRO (one‑time upgrade): - Unlimited aircraft and transmitters - Photo attachments for aircraft, components, and documentation - Configuration storage and advanced record‑keeping - Cloud sync support when linked with your account across platforms CROSS‑DEVICE SYNC Sign in with your account (optional) to sync PRO status and subscription data through the cloud. Your RC fleet can follow you between desktop and mobile versions of RC Model Manager. DESIGNED FOR RC HOBBYISTS Whether you fly airplanes, helicopters, drones, or drive RC cars, RC Model Manager keeps all the technical details and history of your models organized so you can focus on safe, consistent flying. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/