20-25 May 2025: MOS Burger Singapore Free Small Fries with Chicken Set: Limited-Time Member-Only Promotion by JR 21/May/2025 From 20 to 25 May 2025, MOS Burger Singapore is giving app members a free small fries with every purchase of a MOS Chicken Set Meal. Limited to the first 750 members who registered before 19 May—redeem your e-voucher in-store now. Read more
