Les Productions Zvon has released the Julie Resynth (31 instruments) and Square Wave (26 instruments) expansion sample sets for Thumbjam. They sell for $2 and $2.50 respectively.
Both have free downloadable demos, visit this page for more info: lesproductionszvon.com/iOS
These sets are available in other formats too:
- Julie Resynth is also available for BeatMaker 2 (iOS), Caustic 2 (Android/PlayBook/Win) and a larger version for computers in WAV, SoundFont, Kontakt 3 and Wusik Station formats.
- Square Wave is also available for Caustic 2 (Android/PlayBook/Win) and a larger version for computers, named MC3A in WAV, sfz, and Kontakt 3 formats.