I think its a steatoda. It catches many small flies and aphids from the plants I grow on the window sill, so it has moulted recently. And the cobweb gets larger and larger. I got a LED grow light recently. Today I found a small flytrap plant (but it just emerged from the seed). Its so hard to grow them! It took me months. But the LED lamp apparently worked. the second picture is an older view from her. Now she often hangs above the soil. when she's disturbed she retracts behind the plasic container.