Can I make conditions in a free form?

Yes, you can.

JotForm is Fremium service so you can use it for free with all of its features available to you and no ads or any other crippleware.

The only limit is the 100 regular submissions or 10 SSL (secure submissions) or 10 paid submissions and the 100MB of free space.

This means that you can have and create even 1000 forms with any number of fields on it, as long as you do not go over the limit, but the good thing is that these limits are based on a monthly period, so on every 1st of the month, your submissions counter will be reset to 0.

Only the space is not reset and the limit is 100MB, but you can clear it up as you see fit.

Do let us know if you have any further questions and we would be happy to answer them.

I would also like to suggest taking a look at the following guide:

Smart Forms Using Conditional Logic