 If you liked
Saiki Kusuo no Ψ-nan
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 ...then you might like
Kaguya-sama wa Kokurasetai: Tensai-tachi no Renai Zunousen
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-Both are comedy anime with likeable characters
Even though these series don't have similar stories, they'll both leave you with a smile.
So if you are looking for another show like Love is War, then I recommend Disastrous life of Saiki(or vice versa) because of their likeable and sometimes relatable characters.
Details:
-Both main girls(Teruhashi in "Saiki" and Kaguya in "Love is war") have the goal to make the main character fall in love with them but falls for them instead
-The main character in both series (Kaguya and the president /Saiki) are both gifted in some way
Both series are very similar in many way
both are episodic and self contained episode
Both relies on high comedy elements
Both have colorful set of characters including well developed secondary characters and similar character design
both have girls who like the male protagonist
both have high school setting
Both have character trying to hide things from others which result in comedy antics (In one series its supernatural powers and in other series its romantic interest)