차이 is a free finance program developed by The Chai Corporation for iPhone users. It falls under the Business & Productivity category and specifically targets the Finance subcategory.

The main features of 차이 include the 차이 신용카드 (Chai Credit Card), which offers cashback of up to 200,000 won per month without any conditions. Users can also enjoy personalized benefits in various areas such as telecommunications, large supermarkets, and gas stations. Additionally, the program provides a 2% cashback on public transportation expenses and an expanded lightning point accumulation range.

Another feature is the 차이 체크카드 (Chai Debit Card), which offers cashback of up to 100,000 won per month without any conditions. Users can receive benefits from their favorite brands.

Lastly, 차이페이 (Chai Pay) enables users to make quick and secure payments by connecting their existing accounts to 차이. The program is protected by 24/7 security experts who safeguard users from various threats.

Overall, 차이 provides users with overwhelming benefits and convenience in their financial transactions. It is a must-have program for those looking to maximize their savings and enjoy personalized perks.