Yes. Agyaras tithi and gyaras tithi refer to the same day in Jain tradition.

• Agyaras / Agiyaras = 11th lunar day
• Gyaras = a shorter spoken form of the same word in some regions

In Jain usage, this usually means the 11th tithi of the lunar fortnight, and it is especially important for upvas, ekashana, and religious observance.

So, in simple words: Agyaras = Gyaras = 11th tithi.