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Chord Progression Helper vs iReal Pro: catalog facts
Chord Progression Helper	iReal Pro
Free Free and open source under the Apache-2.0 licence.	Paid One-time purchase per platform, with optional style packs as in-app purchases.
Android	Windows, macOS, Linux, Android, iOS
Songs built from parts and measures Adds drum beats and melody to chords	Backing tracks in more than 50 styles Any key and tempo
Young project, started in 2026 Android only	Bought separately for each platform Some styles cost extra
Downloadable app	Downloadable app
Open source	Closed source
License: Apache-2.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.