iOS /App Store/:
Latest version of iReal Pro requires iOS 13 or later.
App size: approx. 78 MB

macOS /Mac App Store or direct download/:
Current version: macOS 10.13 (High Sierra) or newer

macOS /Direct download/:
Previous version: OS X 10.6.8 - 10.12. (for Mac computers with minimum 64-bit processor)
App size: approx. 103 MB

Android /available only via Google Play Store/:
Latest version of iReal Pro requires Android OS 8 or higher.

iReal Pro version 2020.7.1 requires Android OS 6 or 7.

iReal Pro 8.0 requires OS 4 or up.
[If you purchased the app previously and need to install it on a device with older OS version, contact us through the support form with the email address you used for the original purchase in Google Play Store. (minimum OS 2.2. and Armv7 Processor)]
App size: approx. 45 MB

Song / Playlist files (All versions):
You need 5 - 20 MB to have thousands of songs in the app.
The main playlists take up approx. 2 MB.