The Guernsey Literary and Potato Peel Pie Society scored less than 77 % based on less than 18 reviews .
On review aggregator website Rotten Tomatoes , the film holds an approval rating of 78 % , based on 18 reviews , and an average rating of 5.9/10 .
The Guernsey Literary and Potato Peel Pie Society -LRB-film-RRB-