I may be an idiot but it isn't the most intuitive experience I've had. I have been under pressure to produce so that may have something to do with it.

Only used twice but each time I was pleased with the features and ease of use. The only negative is that it is difficult to save files. I had to use a two step process of saving to PDF Filler then copying to my local drive.

Wish that the tools were better on the app. Very limited there. Also that there was a square/box that could be drawn, not just the addition of a circle.

I received some paperwork that needed to be signed and sent back to sender in a timely manner. PDFfiller was the only way I could do this. I had no access to a printer or fax machine. I'm trying to learn all of the use of the PDFfiller. I am currently trying to learn how to download some of my saved papers and sign them, then send them out. I forgot how I did it yesterday.

I think your site is well designed and has substantial potential. But being unfamiliar with all the choices, my initial effort at using your site took a little longer that I had hoped it would. But that is a minor critique. i'll do more exploring at a later date.