Amazing Slow Downer vs Exerzisor

Amazing Slow Downer slows music without changing its pitch, helping musicians study songs and techniques through repeated listening. On Windows and Mac, playback speed can range from 20% to 200%, and pitch can be shifted by semitones or cents. The Windows version handles MP3, Wave, Windows Media Audio, Ogg, FLAC, and AAC/M4A files in real time. On iOS and Android, speed ranges from 25% to 200%; those versions also support seamless loops during playback and changes to tuning or musical key. Computer versions can be controlled with USB HID devices and MIDI controllers, while the iOS page also describes Bluetooth/MIDI remote control. Mac and Windows versions do not support Spotify or Apple Music playback, and DRM-protected iTunes M4P files are unsupported. Free trial software is available for Windows and Mac, and the mobile pages link to free lite versions. Prices are $9.95, paid once for Android, $14.95, paid once for iOS, and $39.95, paid once for Mac/Windows. Each purchase is a single-user license, with a separate license required for each platform.

Exerzisor is a music teaching platform and student practice app for private teachers and music schools. Teachers can build lessons and courses, attach files, and assign work to individuals or groups. It turns Guitar Pro files (.gp, .gpx, .gp5) and MusicXML into interactive scores or tablature with audio sync, practice loops and adjustable playback speed. A browser-based multi-track studio accepts microphone recordings or uploaded stems; teachers can add timestamped comments and review track versions. Practice games cover sight-reading, chord changes and melodic voice-leading, while tracking displays practice minutes, activity, streaks and practice mix. Optional alerts can flag reduced practice. Parents receive a read-only portal for lessons, courses, trophies and progress, and can message the teacher. Student accounts can be created without email addresses. Exerzisor supports web and iPad, with iOS and self-hosted options also listed. Self-Hosting costs 0.00 CHF and requires operators to install updates manually. Cloud hosting and Own Hosting have no listed price; terms are arranged according to the hosting model.