Along with the Polish vocabulary come a lot of tests for the single forms of nouns, verbs and adjectives. The following tests are available without restrictions:

• Noun: Genus, Gen. Sg., Nom. Pl.
• Verb: imperfective aspect, perfective aspect, present/future 1. Sg., present/future 2.Sg.

All other tests for single forms are available after the purchase of the in-app purchase “Polish Single Forms”. Such tests also have the in-app purchase as a prerequisite in the test documentation.