🎉 Limited offer — 7 days completely free, then just $7.50/month billed annually. Cancel anytime.
7-Day Free Trial — No charge today
Train your brain. See real results.
Join thousands of members improving their TIS score every day. Start free — no credit card required until your trial ends.
★★★★★
4.9 / 5 from 2,300+ members
12K+
Active members
+14pts
Avg TIS gain in 30 days
94%
Would recommend
Full accessfor just
$12.99
/ month
💡 Save $65.89/yr with annual plan
Billed monthly · Switch to annual anytime to save
Everything included
✓
Unlimited access to all 6 cognitive categories
✓
All 3 difficulty levels — Beginner, Intermediate & Advanced
✓
Live TestEarth Intelligence Score (TIS) — updates after every quiz
✓
90 structured lessons — from basics to Mensa-level techniques
✓
Daily brain challenges, refreshed every 24 hours
✓
Full explanation for every answer
✓
Challenge friends with shareable quiz links
✓
Annual TestEarth IQ Certificate
✓
Priority access to all future features
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What members are saying
My TIS went from 98 to 117 in six weeks. I do one session a day — it genuinely feels like my thinking got faster and sharper.
J
James T.
Software engineer · Member 8 months
★★★★★
I was skeptical at first but the lessons section is brilliant. The explanations after each wrong answer are better than any book I've read on this.
S
Sarah K.
Graduate student · Member 5 months
★★★★★
The challenge feature is addictive. I've got my whole team competing — it's actually made our problem-solving sessions noticeably better.
M
Marcus R.
Product manager · Member 11 months
★★★★★
🛡️
Zero-risk guarantee
Cancel any time before your 7-day trial ends and you will never be charged. No questions asked, no cancellation fees, no hoops to jump through.
No. You will not be charged anything today or at any point during your 7-day free trial. Your card details are securely stored but not billed until the trial period ends. Cancel before the 7 days are up and you pay nothing — ever.
How do I cancel?
Go to Account Settings inside your dashboard and click "Cancel Subscription." It takes one click and cancels immediately. No phone calls, no retention flows, no cancellation fees.
What is the TIS score and is it accurate?
The TestEarth Intelligence Score (TIS) is our proprietary cognitive performance metric built on the same principles as standardised IQ assessments. It measures accuracy, speed, and difficulty-adjusted performance across 6 cognitive categories. While it is not a clinical IQ test, our scoring engine correlates closely with validated assessments and is a strong indicator of relative cognitive performance.
How quickly will I see improvement?
Most members see measurable TIS improvement within 2 weeks of daily training (10–15 min/day). Our data shows an average gain of 14 TIS points in the first 30 days for members who complete at least 5 sessions per week.
Is there a monthly option?
You're on the monthly plan at $12.99/month. You can switch to the annual plan ($89.99/year, which saves you $65.89) at any time from your account settings.