In the Orthodox Church all couples, if use of fertility control is permitted, have the ability to choose from a range of non-abortion causing fertility control methods and use what works best for them as a couple.
In the Catholic Church, all couples have the ability to choose to use fertility control without seeking spiritual guidance, but if they decide to, they may only use the method of abstinence.
Each Church allow freedom, but in different areas.
Catholics may disagree with the freedom given by the Orthodox Church thinking it’s harmful to the couple’s relationship to permit a barrier and Orthodox may disagree with the freedom given by the Catholic Church thinking it’s spiritual harmful for a number of reasons.