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Based on our record, CodePen seems to be more popular. It has been mentioned 513 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | codepen.io | 6th.tech |
| Pricing | — | |
| Platforms | — | |
| Company | — | Startup from Bulgaria · 1 - 9 employees · 2025 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of CodePen yet.
6th Mind is a free mental health app that brings clinically-validated therapy to your smartphone. Using AVE (Audio-Visual Entrainment) technology - a combination of stroboscopic light and isochronic tones - the app helps users manage depression, anxiety, insomnia, and burnout. Built on Real...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing CodePen and 6th Mind.
6th Mind's answer:
6th Mind is the only mental health app built from a real clinical practice with 500+ therapy sessions and 80%+ patient success rate. Unlike meditation apps, it uses clinically-validated AVE (Audio-Visual Entrainment) therapy developed by a psychiatrist and psychologist team. Our proprietary EEG Index™ methodology - based on actual brain activity measurements from patients - enables personalized treatment protocols with measurable outcomes, not just subjective "feel better" results.
6th Mind's answer:
vs. Meditation apps (Headspace, Calm):
Active brain stimulation therapy vs passive meditation
Clinical validation (500+ sessions, 80%+ success) vs lifestyle wellness
Evidence-based protocols vs general relaxation
100% free vs $12-15/month
vs. AVE apps (Lumenate):
Clinical focus (treating depression/anxiety) vs recreational (psychedelic experience)
Backed by real clinical practice with measurable patient outcomes
Personalized 15-day protocols based on assessment vs open exploration
Developed specifically for mental health treatment, not entertainment
vs. Therapy:
Free and accessible 24/7 vs expensive and scheduled
Can be used alongside traditional therapy as complementary support
Based on protocols proven effective in clinical practice
6th Mind's answer:
Our primary audience is people aged 25-55 struggling with depression, anxiety, insomnia, or burnout who are:
Seeking science-backed, non-invasive mental health solutions
Looking for affordable or free alternatives to expensive therapy
Open to technology-based approaches to mental wellness
Interested in evidence-based methods with measurable results
Wanting complementary tools to use alongside (or instead of) medication and traditional therapy
Secondary audiences include tech professionals and entrepreneurs dealing with burnout, and anyone who prefers medication-free approaches to mental health.
6th Mind's answer:
6th Mind was born from our clinical mental health practice in Sofia, Bulgaria. After treating 500+ patients for depression, anxiety, and burnout over 18 months with 80%+ success rate using AVE (Audio-Visual Entrainment) therapy, we realized something powerful: the same protocols that worked in our clinic could potentially work through a smartphone.
We saw that effective mental health therapy was inaccessible to most people - either too expensive, geographically limited, or required special equipment. Our psychiatrist and psychologist team spent months analyzing data from hundreds of clinical sessions to develop personalized protocols that could be delivered via any smartphone's camera flash and speakers.
Our mission is simple: make clinically-proven mental health therapy accessible to everyone, everywhere, for free. The app brings our clinical expertise into your pocket, transforming your phone into a therapeutic device backed by real clinical data, not just wellness trends.
6th Mind's answer:
Core Technologies:
AVE (Audio-Visual Entrainment) - Stroboscopic light patterns + isochronic tones for brain stimulation
Proprietary EEG Index™ - AI-based methodology linking brain activity patterns to mental health states
React Native - Cross-platform mobile app framework (iOS and Android)
AI/Machine Learning - Personalization engine for adaptive treatment protocols
Smartphone hardware integration - Camera flash (for light therapy) and audio output (for sound therapy)
Clinical Foundation:
Muse EEG headband - Used in clinical practice for brain activity monitoring
Roxiva lamp - Professional AVE equipment used in clinical sessions
Psychological assessment frameworks - Standardized questionnaires for patient evaluation
Data & Analytics:
Python backend - Data analysis and protocol optimization
Custom AI algorithms - Real-time therapy personalization based on user feedback
Cloud infrastructure - Secure data storage and processing
6th Mind's answer:
As a B2C mental health app focused on individual users, we serve thousands of people rather than traditional "enterprise customers". However, our user base includes:
Individual users seeking free mental health support (current primary focus)
Indie makers and solopreneurs dealing with burnout
Tech professionals and developers experiencing work-related stress
People who have tried medication or therapy but seek complementary approaches
Future B2B partnerships in development:
Corporate wellness programs (employers seeking mental health solutions for employees)
Psychologists and psychiatrists (using the app as between-session support for their patients)
Universities and counseling centers (providing accessible mental health tools for students)
Note: We're currently B2C-focused with a free app. Our "biggest customers" are the hundreds of individuals who complete our 15-day protocol and see measurable improvements in their mental health. We're building toward B2B partnerships but haven't launched enterprise offerings yet.
Share your experience with using CodePen and 6th Mind. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Codepen is a social network for developers to show off their work, ask and answer questions, and exchange ideas. It's like a Reddit for coding and design, with a large community of talented web developers.
Codepen is a social development environment that allows developers to showcase their work and experiment with HTML, CSS, and JavaScript in a collaborative space. Codepen’s focus on visual and interactive development...
Codepen is a social development environment for front-end designers and developers. Build and deploy a website, show off your work, build test cases to learn.
the app is actually good and its features but will have to use more
After using 6th Mind consistently, I noticed a strong improvement in my sleep quality and a clear lift in my overall mood. The sessions also helped me stay calmer and more grounded when dealing with stressful or...
Recommendations tracked on public social media and blogs since March 2021.


> I vividly remember IE and many hacks to have css elements properly working in it… The common advice now is to only use CSS that is supported in the last two major versions of each major browser. You can check any css property's support... - Source: Hacker News / 2 months ago
Thank you, heartfelt... For sharing an artwork, a miracle! Just in case, have you considered publishing the work at platforms as CodePen, where genius Artists/People express their art, too, as you?: // https://codepen.io/. - Source: Hacker News / 3 months ago
Embed on DEV: If you prefer CodePen embed, create a Pen with that HTML and add to the post as: {% codepen https://codepen.io//pen/ %}. - Source: dev.to / 12 months ago
Tracking 6th Mind since Dec 2025.
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