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88 exams. 170,000+ questions. Always free.

Find your weak spots
in 15 minutes

Our adaptive engine picks the questions most likely to reveal where you need work. No signup. No email. Just answers.

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88
Exams
170K+
Questions
15 min
Per Diagnostic
$0
Cost

How it works

1

Choose your exam

Pick from 88 exams across test prep, AP, professional, tech, and international categories.

2

Answer adaptive questions

Our engine selects questions based on your responses. If you get one right, the next one gets harder. 15 minutes total.

3

Get your results

See your estimated score, skill breakdown, and a personalized study plan. No signup required to see everything.

88 exams, one engine

The same adaptive technology used by major testing organizations — available free for every exam.

Test Prep
SATACTPSATGREGMATLSATMCAT
AP Courses
41 AP courses including Calc, Bio, Physics, APUSH, Lang, Psych...
Professional
CPACFABar ExamPMPNCLEXUSMLENAPLEX
Technology
AWSCompTIA Security+CISSPSalesforceSQL
International
TOEFLIELTSJEENEETGATEA-LevelsGCSE
See all 88 exams

Why adaptive beats practice tests

Finds gaps in 15 minutes, not 3 hours
Adapts difficulty to your level in real time
Identifies the specific skills costing you points
No signup, no email, no paywall
Works for 88 exams across 10 categories
Backed by Item Response Theory (IRT)

Ready to find your weak spots?

15 minutes. No signup. Works on any device.

Start Free Diagnostic