That isn't what they do, they help you build muscle or become stronger. Your diet and energy expenditure will handle all of that. Also are you referring to legit PH, or Designer Steroids? Two different categories that get lumped in together all the time but are very different. If talking about Andros then get a bunch and double dose to see a real effect... Dienolone is nice to keep dry and solid muscle but not really going to increase fat burn directly but indirectly like most do.
If your goals are to be bigger and stronger but leaner then go with a stronger product. If just trying to cut without losing muscle then go with an andro or andro stack if you have the money and are not willing to go the designer steroid route and want to avoid some of the sides that come with stronger products.
Bottom line you want to look for things that do not aromatize if you are trying to look tight on cycle. Also things that do tend to help a little will be more androgenic in nature. If Androhard were still around I would direct you toward that because it was androgenic enough to make a nice difference. Their are also some decent SARMS that would help some.
Really though most anabolics help you lose fat by using a lot of the incoming calories trying to grow which leaves less for storage. Creating new muscle is a costly endeavor concerning calories. The degree to which this happens really has to do with the strength of the anabolic. Other than that non-aromatizing anabolics will help you look better in the process. There is more to it but this is plenty to give you the info you need to plan a cycle.
Your diet and energy expenditure are what are going to burn the fat, do exactly what you need to do their and the cycle will just enhance that.