Hanon Pro vs Black Hole Vision

Hanon Pro is an app for iPhone, iPad, and Mac that helps improve your keyboard and piano technique with repertoire and exercises modernized for the digital age. Just like health and fitness apps track your physical health over time, Hanon Pro does the same for piano practice. Our intelligence engine enables you to get feedback on your playing, visualize trends, and track practice habits over time. The app features a catalog of content specifically designed to look great on iPhone, iPad, and Mac. We design each book and score with support for responsive layouts, Dark Mode, rich metadata, embedded finger numbers, and more. You can listen to each piece, practice with the built-in metronome, and adjust the tempo. The real magic of Hanon Pro is unlocked when you connect your iPhone, iPad, or Mac with a MIDI keyboard or piano over a Bluetooth or USB connection. Hanon Pro's intelligence engine can analyze your playing, including accuracy, tempo, and dynamics, and even turn pages as you play. To help make piano practice a habit, the app lets you sign up for daily practice reminder notifications and earn achievements over time with built-in Game Center integration. ALL FEATURES - Browse our catalog of music scores, each designed with support for interactive features like automatic page turning and computer-aided evaluation - Obtain content designed to improve keyboard and piano technique such as scales, piano exercises, and repertoire used by exam boards - Explore music by composer, key, and even exam boards like ABRSM, RCM, and Trinity - View rich metadata about each work, including description, composer, key, year of composition, and more - Search, sort, and filter your music library to find the scores you want - Sync your music library with your iPhone, iPad, and Mac over iCloud - Practice with the built-in metronome and adjust the tempo of any score - Listen to any piece in the catalog with our realistic playback engine - Pair the app with a MIDI keyboard or piano, either wirelessly over Bluetooth or with a USB-C cable - Evaluate your performance and receive feedback on accuracy, tempo, rhythm, style, and more** - View charts and graphs that visualize how your progress improves over time** - Track daily practice habits, including time spent practicing** - Unlock achievements as you practice with Game Center integration** - Enjoy automatic and hands-free page turning as you play** - Sign up to receive daily practice reminder notifications and customize the time - Invert scores in Dark Mode to reduce brightness when practicing at night - Customize the app to your liking with control over metronome volume, finger numbers, playback options, MIDI settings, and more - Hanon Pro is a truly native app for iPhone, iPad, and Mac, built with technologies like SwiftUI, Swift Charts, Core Audio, Core MIDI, iCloud, Game Center, and more CONTENT Our music catalog features content commonly used to learn and improve technique such as scales, chords, Hanon exercises, Schmitt exercises, works by Bach, Beethoven, Krebs, Mozart, and more. If you'd like to request a score, you can do so directly in the app! WHY HANON PRO? There are already many great apps that aim to teach piano playing from the ground up. Hanon Pro is targeted at piano players who already know the basics but want to improve their technique while getting feedback and tracking progress over time. PRICING We're committed to maintaining Hanon Pro for years to come. However, it's a niche product and each score and book needs to be prepared for the interactive capabilities of the app such as automatic page turning, responsive layout, and computer-aided evaluation. In other words, it's not just a PDF. To sustain the development of Hanon Pro, we charge for the content in our catalog. **Requires a Bluetooth or USB MIDI keyboard or piano (sold separately)

What would the world around you look like if you were staring at a black hole? This application places a black hole in the field of view of your iPhone’s camera and gravitationally "lenses" the resulting live video feeds just as a black hole would warp the light from surrounding stars. The resulting "Black Hole Vision" reveals interesting features of black hole lensing, including a "photon ring" of strongly lensed images around the black hole. The measurement of this photon ring will be the target of future astronomical observations from space with the Black Hole Explorer: an orbit satellite that will take the sharpest images in the history of astronomy! To learn more about BHEX, head over to https://www.blackholeexplorer.org/. The code is open source and freely available on GitHub at https://github.com/graveltr/BlackHoleVision, along with documentation that explains the underlying black hole lensing equations and how they are implemented in Black Hole Vision. The code was written at Vanderbilt University by Trevor Gravely with input from Dr. Roman Berens and Prof. Alex Lupsasca. We also acknowledge Dominic Chang for useful input and comments. This project was supported by CAREER award PHY-2340457 and grant AST-2307888 from the National Science Foundation. The lensed image of the spiral galaxy Messier 101 was generated using material produced by NASA and STScI and can be found here: https://hubblesite.org/contents/media/images/2006/10/1865-Image.html?news=true. License: This app includes a port of the GNU Scientific Library's (GSL) implementation of Jacobi elliptic functions and the elliptic integrals to Metal. It is licensed under the GNU General Public License v3.0 (GPL-3.0). You can view the full license and obtain a copy of the source code at: https://github.com/graveltr/BlackHoleVision.