For once, you won’t have to feel bad about adding that extra order of guac to your meal at Chipotle. The Mexican-inspired chain is offering free chips with guacamole or queso to customers who purchase their first order on its new smartphone app. The only catch? It has to be on an iPhone, according to Chipotle’s website. iOS users can find the deal under the app’s “Offers” section, where it can be redeemed until 11:59 p.m.