Free covers the digitizing toolkit: run, satin and fill tools, ten image conversions, ten export formats (DST, PES, JEF, EXP, VP3, PEC, XXX, U01, TBF, PMV), the thread library, previews and cloud sync, with unlimited designs and ten of them synced at a time.
Pro is $19 a month and adds lettering, appliqué, motif fill, motif run, program split, unlimited auto-digitize, AI Assist, the stitch order and colour sequence optimisers, bulk export and an unlimited cloud library. Studio is priced per team.