The Fi 103 ("V-1") and Aggregat 4 ("V-2") were not precision weapons, by any stretch of the imagination.
The Fi 103 guidance system was primitive, and target deviation was measured in kilometers.
The Aggregat 4 fared only marginally better.
From the linked WP article:
Initially, V-1s landed within a circle 19 miles (31 kilometres) in diameter, but by the end of the war, accuracy had been improved to about 7 miles, which was comparable to the V-2 rocket.
(Attributed to Kloeppel, Major Kirk M., The Military Utility of German Rocketry During World War II, Air Command and Staff College, 1997.)
So, hitting a large city -- say, London, or later, Antwerp -- was basically all those two weapon systems were good for.
(11 V-2 rockets were aimed at the Ludendorff Bridge at Remagen in an attempt to destroy the bridge. Target deviation varied between one "near" miss at ~500m, and one rocket landing as far away as Cologne (40km away)...)
Launching these weapon systems required some infrastructure set up (steam catapult / Meillerwagen), fuelling, and associated setup, not to mention storage. Something that could be done with relative ease in the west (with static launch sites within range of the targets), but not so much in the east with its fluid frontline.
No, there is no record of either Fi 103 / V-1 or Aggregat 4 / V-2 use on the Eastern Front.
It just didn't make sense.