Your 60-Day Risk-Free Trial
Here is what your first 2 months looks like.
Getting started
Set up, calibrate, and complete your first neurofeedback session. See your brain activity in real time from day one.
Your brain starts responding
You begin noticing how your prefrontal cortex activates during sessions. The app starts tracking your baseline and early progress signals.
Measurable improvements emerge
Focus scores climb. You start feeling sharper in daily life. The app shows week-over-week improvement in your key metrics.
Noticeable, lasting change
Users report meaningful improvements in focus, stress resilience, and mental clarity. Your progress data tells the story.
Trusted by 72,000+ users globally
What our community says
10 minutes a day. A lifetime of sharper mental clarity.
Mendi's brain-training technology is built on decades of Functional Near-Infrared Spectroscopy (fNIRS) research used in neuroscience labs across North America and Europe.
Improvement in sustained focus
42%
Reduction in perceived stress
31%
Improved mood and emotional balance
16%
Better general wellbeing
51%
Results are based on aggregated in-app data and self-reported outcomes from thousands of users who completed eight weeks of Mendi neurofeedback training. Improvements were measured using validated scales (ACS, WHO-5, PSS-10, GAD-7, PHQ-9). Individual results may vary.
What scientists say about Mendi


Cutting-edge technology, designed to feel effortless
Sensor Type
fNIRS
Functional Near-Infrared Spectroscopy — not EEG
Target Region
Prefrontal Cortex
The brain's focus and decision-making center
Signal
Real-Time Blood Flow
Oxygenation measured continuously during session
Accuracy
Lab-Grade Signal
Validated against Biopack fNIR100 lab equipment
Frequently Asked Questions
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Mendi uses fNIRS (functional near-infrared spectroscopy) to measure blood flow and oxygenation in your prefrontal cortex in real time. That signal feeds into a 10-minute daily game where you train your brain to activate and sustain focus. The more you train, the stronger and more consistent that activation becomes.
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Mendi is suitable for all age groups, though we recommend it for ages 5 and up. It is particularly helpful for those seeking to improve focus, emotion regulation, and working memory as part of a healthy brain training routine.Please note that Mendi is not a certified medical device and is not intended to diagnose or treat medical or mental health conditions. If you have, or suspect you may have, a medical condition, please consult your healthcare provider before using Mendi.
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Get started in less than 30 sec:
- Put on your Mendi headband and open the Mendi brain training app. Make sure it fits snugly on your forehead to measure brain activity accurately.
- Find a dim spot to avoid bright lights, this helps ensure a clearer signal.
- Select your training duration and settle in. Relax and focus on the ball, aim to make it rise. Each time a star appears, think of it as instant feedback that you're “doing it right.”
Bonus Tip: Try a quick session before work, studying, or sports. It’s a great way to boost focus and mental sharpness!
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Yes. Mendi sits on your forehead and uses near-infrared light to read brain activity. No electrical stimulation, no needles, no discomfort. The same fNIRS technology has been used safely in neuroscience research for over 40 years.
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Most users begin noticing changes within 2 to 4 weeks of consistent training. Measurable improvements in focus, stress resilience, and mental clarity are typically reported after 8 weeks. Results vary by individual and training frequency.
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New users should gradually adjust their neurofeedback training to suit their individual needs. During the first week, we recommend three 5-minute sessions to become familiar with the app and headband.
Over time, you can increase session length. Aim for 4–5 sessions per week, gradually extending them to 10 or 15 minutes as you progress, until you feel comfortable with daily sessions. Be mindful of mental fatigue, and prioritize quality over quantity by scheduling sessions under calm conditions for the most accurate feedback. -
Yes. The Mendi app supports multiple user profiles, so the whole family can train on one device. Each person tracks their own progress separately.
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No. The Mendi app is free with no ongoing subscription fees. You pay once for the device and get full access to all training features.
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Mendi comes with a 60-day risk-free trial. If you are not satisfied within 60 days of purchase, you can return it for a full refund.
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Mendi works with iOS and Android smartphones via Bluetooth.
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Meditation apps guide you through a practice but cannot measure what your brain is actually doing. Mendi reads your prefrontal cortex activity in real time and gives you objective feedback on your performance. You are not just following instructions. You are training a measurable skill.
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Yes. Mendi is built on 40+ years of peer-reviewed fNIRS neurofeedback research. Independent researchers at Stockholm University validated Mendi's sensor accuracy against BioPac fNIR100 lab equipment. Published studies on fNIRS neurofeedback training show measurable improvements in sustained focus, working memory, and stress resilience.







