A Monster Call has an approval rating lower than 89 % , based on less than 78 reviews on Rotten Tomatoes , and an average rating of under 7.6/10 .
The aggregate site Rotten Tomatoes reports an approval rating of 89 % , based on 79 reviews , with an average rating of 7.6/10 .
A Monster Calls -LRB-film-RRB-