Impressive. Most impressive. – Match Colours Review

Remember those videos and images that you converted to black & white because the colors were unacceptable (as in, horrible) even after you adjusted them? This app can recolor a full HD video (I have not tried 4K) and make the colors appear to be natural (or all blue or all green if that’s what you want). The output is the same resolution as the original. Hint: Use a modern iPhone when recoloring videos. Using an older iPhone, the recoloring process takes a long time and the iPhone becomes quite warm.
Review by Citizen Paul H on Match Colours.