Very good work

Good pdf reader, offers interactions with othe apps, interaction wit 3rd party Cloud services, its own cloud service.
The only thing I would add is compatibility with russians Iandex, plus some improvements like: on the Text-to-speech feature, where ith voice artificially stops whenever it reaches the end of a line.

victorlage about PDF Connoisseur – Annotate, Sign & Scan with OCR, v3.0