Marketing/writing 101: Avoid repetitions in your product pitches and be precise.
This:
"KsimSaver is a free flight scenario saving tool. KsimSaver makes a flight scenario save each interval. What does this mean? KsimSaver saves the current flight you are in each specified amount of seconds automatically! KsimSaver uses SimConnect SDK to connect to your simulator and save the current flight scenario!"
Should be this:
"Ksimsaver is a free tool for Flight Simulator X and Prepar3D that saves your current flight in a specified time interval using SimConnect."
This:
"What sim versions does KsimSaver support?
KsimSaver supports all versions of FSX and P3D. Support for X-Plane is being looked into "
is not needed because simulator compatibility is mentioned in the description above and system requirements below. X-Plane support could be too complex to implement without rewriting everything, so best don't mention it at all or turn it into a separate product.
This:
"A non-pirated copy of FSX or P3D."
Should be this:
"FSX RTM, SP1, SP2, Acceleration or Steam Edition.
Prepar3d v1/2/3/4"
Implying piracy in product descriptions is always bad.