Chappie received an approval rating of under 31 % on Rotten Tomatoes , which was based on less than 155 reviews , and its average rating was less than 4.9/10 .
The review aggregator website Rotten Tomatoes reported a 31 % approval rating , based on 157 reviews , with a rating average of 4.9/10 .
Chappie -LRB-film-RRB-