ABRSM Music Theory Trainer vs MusicTheory.net

ABRSM Music Theory Trainer has no write-up on Specifiction yet; its figures are above.

MusicTheory.net is a free, ad-free music theory learning site with animated lessons, practice exercises, and reference tools. Lessons address notation, rhythm, scales, intervals, chords, and chord progressions. Online exercises cover identifying and constructing material on the staff, keyboard, and fretboard, as well as ear training. Calculators handle accidentals, intervals, scales, chords, analysis, and twelve-tone matrices; other tools include a tempo tapper and staff paper generator. Teachers can make permanent links to customized exercises and validate exercise verification codes. Students can create signed Progress Reports with codes teachers can verify. Lessons, exercises, and tools can be embedded in other sites using HTML frames or iframes; the FAQ recommends a minimum size of 600 by 600 pixels. The Tenuto app for iPhone and iPad adds 24 exercises, six calculators, customization, Challenge Mode, and offline use. Theory Lessons is an iPhone and iPad app with 39 animated lessons. The website plan includes all site content at free, with no ads.