OathPrep vs USCitizenshipTest.org: Which USCIS Prep Tool Is Right for You?
USCitizenshipTest.org is a long-running free web quiz site for the USCIS civics test. It is well-known, simple to use, and good for self-quizzing on the question pool. It does not, however, simulate the interview format or include voice practice. OathPrep covers what the quiz site does not: the spoken rehearsal you actually need to pass.
Last updated: May 2026 · OathPrep is our product , visit USCitizenshipTest.org
Quick Verdict
Choose OathPrep if…
- You want a real interview rehearsal, not just a multiple-choice quiz
- You worry about the pressure of the spoken interview
- You want subtitles in a language other than Spanish
- You want to practice the reading and writing components in full
Choose USCitizenshipTest.org if…
- You only need a quick free quiz to test your civics knowledge
- You are taking the older 100-question version of the test
- You are confident in your spoken English and just need to memorize answers
- You do not mind ads on the page
Feature-by-Feature Comparison
| Feature | OathPrep | USCitizenshipTest.org |
|---|---|---|
| Voice-based mock interview | ✓ | ✗ |
| Realistic officer behavior | ✓ | ✗ |
| Follow-up questions | ✓ | ✗ |
| English reading test practice | ✓ | Partial |
| English writing test practice | ✓ | Partial |
| Native-language subtitles | 13 languages | Spanish only |
| 2025 civics questions (128) | ✓ | ✓ |
| 100-question (older) version | ✗ | ✓ |
| State-specific question updates | ✓ | ✓ |
| Score tracking | ✓ | Partial |
| Mobile app | Web works on mobile | Web only |
| Price | $39.99 (10 sessions) | Free (ad-supported) |
Pricing and features as of May 2026. Visit each product's website for the latest information.
How They Compare in Detail
What it is good at
USCitizenshipTest.org is a clean, free quiz site. Pick a category, answer multiple-choice questions, see your score. It covers both the older 100-question test and the newer 128-question version, which is useful for applicants whose interview falls under either rule set.
It also has Spanish translations of the questions, which helps Spanish-speaking applicants understand the wording.
What it is missing
The site is built around quizzes, not interview simulation. There is no officer, no voice interaction, no follow-up question, and no pacing. That is fine for self-checking your civics knowledge but it does not prepare you for the actual interview format.
OathPrep replaces the quiz format with a live mock interview where you speak the answers, an AI officer pushes back with realistic follow-ups, and the experience mimics the real interview.
Pricing
USCitizenshipTest.org is free, supported by display ads. There is nothing to buy.
OathPrep is $39.99 for 10 voice mock interview sessions. The two tools are complementary at very different price points: the quiz site for free self-checking, OathPrep for paid interview practice.
Our Recommendation
Use USCitizenshipTest.org as a free self-check during early study. It is convenient, no signup required, and works on any device.
When you get within a few weeks of your interview, switch to OathPrep for the spoken rehearsal that the quiz site cannot provide. Quizzing yourself on a screen is a different skill than answering an officer out loud, and only one of those is what your interview will actually be.
Ready to practice the real interview?
10 AI mock sessions for $39.99. No subscription.
Start Practicing with OathPrepMost people pass after 5\u20138 sessions.