differences in charts

Yes ive noticed in some charts some aspects are missing. In one i have i have sun sqaure mars and in the other i don't? I have seen this in others aswell.

Anybody have any suggestions?

I too have found some sites will list a few more aspects than others. More often then not, it likely depends on how much each individual astrologer is allowing for the varience or (degree of separation) between affected planets. Some like the degrees fairly tight and true. Others will allow more headway, thus the orb separation will be looser. In this sense you will get more aspects listed. However, if aspects are missing, it's most likely the allowable orb separation is just too far apart; the astrologer thinking the aspect not strong enough to be of any real significance to the individual, and therefore may not include it. The closer the degree in aspect, the stronger the influence. At any rate, something to check out..

Orb -The number of degrees by which an aspect may vary from partile (exactness) and remain effective.

It's well worth it. I've had my full birthchart done about 3 times over the years, and have since been referring to my own astrology-program and other various sources ever since. Of course, i never want to stop learning, as i've always loved both astrology and the esoteric. Although many astrologers use similar software; some may create their own; and since you're paying, you will receive many more features and much more to read. It's just alot more personal and indepth. Everyone should try and have at least one full natal report done. My favorite house system btw, is Placidus.

Hmmmm okay for instance i have sun square mars (for some) at -7 36. But where do they base the exact orb on? Some say 6 7 8 some will go as low as 4 and they conclude that the closer the to the exact orb the stronger, here is an example say you have 3 degrees of a square aspect involving the su and moon the exact aspect is six though someone else may have 7 (even though they say its six according to them) its passed that orb but closer to exact than 3. You'll probably say well its influence is gone once out of orb but how do they know the exact orb if they did then everybody would agree with 6 not 7 or 8. I have had my full natal report done multiple times. My concern is how do they base seperating aspect weaker than applying yes there needs to be a limit but if the orb is exactly 7 degrees then i dont see why the aspect sun square mars less of an influence if its 36 degrees off. Anybody understand? lol