Amazing Slow Downer vs ChoirMate

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.

ChoirMate combines choir administration with rehearsal, music-sharing, event, communication, and attendance tools. Rehearsal tracks can be arranged by set list, song, and voice group, and conductors or choir members can make recordings. Members can access scores and shared song remarks, with a built-in piano available in the app. Choirs can record attendance for calendar activities and export the data in an Excel-friendly file. Members can receive management messages, comment on them, and chat individually or in groups, including voice-group threads. Premium calendar synchronization works with Google Calendar, iCloud, and other calendar platforms. Subscribers can play audio and read scores offline after opening those resources once while connected to the internet. ChoirMate supports web, Android, and iOS; iOS requires version 16 or later, and Android requires 8.0 Oreo or later. The service says it supports 13 languages and is used by over 100,000 singers. The free plan allows up to 50 people, 10 audio files per user, and 15 repertoire songs. Paid plans include Individual ChoirMate Premium at $4.99 a month, Standard Package at $26.67 a month, and Premium Package at $53.33 a month; the package prices are billed annually with a stated 17% saving.