About Us
Our Mission
CongDan.us was created to help the Vietnamese community prepare for the U.S. citizenship test. We understand that the naturalization process can be challenging, especially when studying in a second language. That's why we provide all content in both Vietnamese and English.
128 USCIS Questions
All questions from USCIS with accurate Vietnamese translations and detailed explanations.
65/20 Mode
Designed for seniors 65 and older with 20 years of residency, only need to study 20 starred questions.
Fully Bilingual
Interface and content completely in Vietnamese and English, helping you study more effectively.
Realistic Practice Tests
Practice tests simulating the real exam with 20 random questions, requiring 12 correct to pass.
At a Glance
Why Choose Us?
- Core study content is free
- Includes both the 2025 and 2008 USCIS question sets
- Mobile-friendly design
- Reference material on the N-400 and the interview
- No account needed to study
- Built by Pacific Pulse AI in Honolulu
Important Notice
CongDan.us is an independent study website, not affiliated with USCIS or the U.S. government. Information may change. Please verify at uscis.gov before your interview.