Free, no sign-up
The full 50-item assessment and your five trait scores are free, with no account required. Start in one click and see your results immediately.
Know your style.
Prostile is a free, research-based personality assessment. Answer 50 quick questions and see how you score across the five core traits — in about five minutes.
No sign-up, no cost, and your answers stay private. It's the most widely validated model in personality science, made simple.
Research-based
Prostile uses the Big Five (OCEAN) model and a public-domain IPIP instrument — the same framework used in personality science, not a quiz.
Private by default
Your answers are anonymous and aren't sold, shared, or used to train anything. Privacy is the default here, not an upsell.
How it works
1 · Answer
Rate 50 short statements on a simple agree–disagree scale. Most people finish in about five minutes — there are no right or wrong answers.
2 · Score
Prostile scores your responses across the five Big Five traits and shows where you land on each, right away.
3 · Read
Get a plain-language read on every trait — what a high or low score tends to look like in everyday life, framed as a strength, not a verdict.
What you'll learn — the five traits
- Openness how drawn you are to novelty, ideas, and the imaginative versus the practical and proven.
- Conscientiousness how much you plan, organize, and follow through versus stay flexible and spontaneous.
- Extraversion how much energy you draw from people and action versus calm, focused settings.
- Agreeableness how warm and cooperative you are versus candid, competitive, and willing to challenge.
- Emotional Stability how steady you stay under pressure — Prostile shows the positive pole, so a high score reads as calm and resilient.
Ready to know your style?
It's free, anonymous, and takes about five minutes.