Find out how to Manage Stress, Regain Energy and
Concentration the Easy Way.

Stone: Start Screen

Unleash the Power of Your Brain: Recharge for Better Health, Mood, Energy, Concentration and Sex.

Stone: Center Europe’s best-selling biofeedback system for training concentration and focus, eliminating nagging thoughts, and clearing the mind. Now available directly in USA.

Who is it for

For professional psychologists, psychiatrists and trainers in helping their Clients, and for anyone wishing to better manage stress, thoughts and emotions by self-training at home. (Also suitable for children over 5 years of age).


My name is Marek Jacenko and I have been designing mind training devices for 11 years.
I want to tell you about the youngest child of our research – the Stone System.
We have already created 3 devices with 5 versions altogether since we started, so we know our way around.
With numerous contacts established and years of experience in creating the systems in Europe, it is now time to move on to a truly international project.

Experts from various countries were engaged to do what they do best. Stone was created over three continents.
System design was developed in the USA, devices are assembled in China, and software for the entire world is developed in Europe.

I will now explain what the system contains and how it works.


The system is composed of a device (a computer add-on), games and software. It receives information on your condition through a sensor attached to your ear or finger.















































Stone in Action.

Stone can be used without any preparation.
It is very easy to use:

  1. attach the sensor and connect it to a computer,
  2. launch a game,
  3. control the game using only the power of your mind. (You are training your mind by playing).

Attention: attaching the sensor properly is now super easy. As soon as the sensor receives a signal, a light will flash on the device. You know at once everything is working as it should be.

We also added a clip to the sensor cable, so that you can attach it to your clothing.
The cable won’t get in your way and using the system will be even more comfortable.

With the Stone System, you will improve your Memory and Concentration. The games will teach you how to focus at any time. All this with user-friendly software.

The System contains a whole Set of Training Games.


Crystal Clear. Crystal Clear. A Game for Clearing the Mind.
Teaches Instant Focus.

A Game for Clearing the Mind.

You control water. See how different droplets appear as you change the focus level of your brain. The clearer the mind, the larger the drops and the bowl gets filled quicker.

How quickly can you complete this task using only the power of your mind?

Energy Booster. A Computer Game to Help Manage Restless Thoughts. Regain Concentration and Energy.

For Concentration and Energy
This game will teach you how to get rid of nagging thoughts and to concentrateand focus on here and now. In order to win, you must repress unnecessary thoughts and emotions (I will show you how). Focus on sensing the here and now.

Unlock natural resources in your body to fight fatigue and find energy to do the things you love…

Instant Relaxation. This Game will Teach You Instant Relaxation.

Instant Relaxation.

Finally! Instant Relaxation Now! ! Psychological research shows how you can easily and totally relax in a matter of seconds, using a method learn by playing this simple game.

You will cope with even the most nerve-racking situations in your daily life.

This simple game will train you in the technique of instant relaxation by breathing control (to be exact, by harmonizing your breathing with heart rate variability HRV).

Clear instructions are attached. Even a child will manage :)
Let this machine work on your mind for one evening…
I can guarantee that your friends will gossip about the “Mental Magic” abilities you will be able to show off the next morning.

Extra Game Free!

Mental Magic – Mind Control. Become Master or Mistress of Mind Control.

Control Game by Your Brain.
This game teaches you to control your emotions. In order to complete the task, you must quiet down your thoughts and emotions. The worse your mental condition, the harder the game will be to play. The car will move slower and potholes will appear in the road.

The better your focus and relaxation, the easier the road will become. The car will gain speed.
Test yourself compared to family members and friends! See who will be the  first to complete seven laps.

Biofeedback Start

Stone Will Improve Your Motivation

Even the best system in the world will not work if you don’t use it.
Stone uses a point system and rewards which make the game even more fun to play.

Game Score.
You score increases every time you play. This is only the beginning…

Session Summary.
Points earned from each game are added to your total .The more you play, the more prizes you can win.
If you agree we will post your score for others to see. It’s totally up to you.
All of the scores are posted above.

Easy to Read Stats.
Here are the results from all of your training so far and a complete summary of all of your sessions.

There is a place to add notes or comments for each session.

Multi User. One System can be used by many people.

When you purchase the professional version of this system, all of your clients will be able to use it. The home version of this system is for you and up to two additional friends or family members. Additional fee applies for more participants-see chart below.

Add New User.

You can add new users whenever necessary.

The application is highly configurable.

Game settings are from Basic to Advanced and include many levels. You can control the applications you use and which elements you want to analyze.

Stone is highly configurable

Free Updates

You will receive free updates our our latest version of the system .We will notify you when new games are available.

Your Opinion Matters

We care about you and want to hear about your results. You will receive a special link to our member forum where you can share your opinions with other users and help our company to create products designed to fit your individual needs.


According to ……. programs that help you relax and reduce your stress can also be helpful in getting rid of headaches, helping you sleep better, helping you with depression and other everyday ailments which are caused by daily stress and problems due to lack of concentrations..

“Side Effects” ” of Playing Stone Games

  • Through regular training, you will get rid of headaches, sleep disorders, depression and other everyday ailments caused by stress and problems with concentration.
  • You will protect your mind and add many good years to your life. Feel better and live longer!

Driving Force. Why it works and what’s inside.

Stone - device based on biofeedback Stone is a biofeedback-based device which uses the same technology developed by NASA researchers to help astronauts to control their emotions and behavior while working with millions of dollars of equipment and others in confined spaces so that they would be able to function and act effectively regardless of the conditions found.This is how biofeedback (biological feedback) was born.
Here is what this name means:

  • Biological: involving a living organism (human).
  • Feedback: exchange of information between a human and a machine, where information read by a machine is delivered to the human and affects person performance, which is then fed back to the machine. A circle of information is created.
  • With our system, some our games are played by controlling your mind and do not require using a keyboard or mouse.


Biofeedback HRV. Detailed description of the method.

The system is based on biofeedback HRV, i.e. analysis of heart rate variability. Stone was developed based on many years of research and experiments.

When measuring your heart rate, you will notice that it keeps changing.
It adapts to whatever you are doing or thinking. Research shows that when you are under stress , lose concentration, or lack focus, your heart rate is different than the times you are relaxed, concentrating, and focused.

Heart rate changes not only from changes in your physical activity or emotions, but also when inhaling and exhaling  which are known as Mayer Waves.

By applying various time scales, you can measure the synchronization between heart rate and breath, or the regularity and stability of heart rate.

Graphs below show heart work when stressed and when focused.
Biofeedback Start

This is an actual reading from the Stone device and you can see the difference between when the participant is under stress or when the participant is focused.

You will be monitoring your heart rate to determine your level of focus. Then, the Stone biofeedback HRV will read your heart rate and transform the raw data into a game for you to play.

Here’s how you start your game. When you change your thoughts and emotions, you will be changing the action on the screen.

If you are distracted at the time you are playing your game, you will get different results than when you are concentrating and are focused. You get more points and your score will improve the more you focus.

As you play this game on a regular basis, you will soon discover how much your thoughts affect your body. You will learn how to consciously adjust your thoughts so you will have more peace of mind, find it easier to maintain your inner balance, and it will be easier for your to stay focused.

This is how Biofeedback HRV works.

Stone. Heart of the System.

Stone uses the mathematical analysis tool from a branch of mathematics which was only developed in the last 10 years known as Wavelet Analysis. This analysis incorporates an effective image compression tool which is commonly used in jpg imagery in our cameras and phones with cameras. Other systems on the market still use the old FFT technology, but not Stone.

Analysis methods comparison

Speed times 3.

While maintaining the same result quality, measurement analysis in Stone is 3 times faster than it would be with the old FFT method!

Stone technology makes the analysis 3 times faster than the FFT method and users love that because they get feedback three times faster.

You see how your body is reacting immediately on the screen. Stone’s multi-factor analysis also provides you a maximum amount of information on your emotional state. You receive this information while having fun and playing a game that your control with your mind.

For professional who have clients playing this game, you will have access to a graph which will show the participants’ FFT analysis which you can then use for comparison.

Professional analysis enabled.

Professional users will have access to monitor graphs and live analysis in a separate window or from a separate screen.
Biofeedback Session
In addition to the traditional statistical analysis, the system offers wavelet analysis (first ever in training HRV biofeedback) and frequency analysis.

Graphs have zoom function and  can be enlarged to display greater detail.
The software allows researchers access to the recorded files with contain the raw data which can be used for additional analysis.

Biofeedback Screen
You can customize your Live Statistics Screen to fit your individual needs.

Easy Operation and support:

Stone analyses complex information. For you, the program is easy to run, operate, and understand. The games and most of the graphs were designed so that even a five-year-old would understand them.

If you have any questions, contact our support team by phone or e-mail. You will receive a response within a maximum of 48 hours.


Stone works on computers with Windows.

Windows 7, Windows Vista, Windows XP or Windows 8
Stone works on Windows 7, 8, XP i Vista.
Minimum system requirements:
1GHz or faster processor,
1GB of RAM or more,
CD-ROM drive,
sound card, USB port.

The system works on desktops and notebooks.
Stone Big Screen Stone Screen


Each device has a unique number. It works with the software version provided.

Test it for 30 days – at my risk

Satisfaction GuaranteeNo Questions Asked 100% Satisfaction Guarantee.
You can test the Stone for 30 days. Keep it only if it meets your expectations.
If not,  return the product and I will give you your money back, no questions asked.

The Full product purchase price will be refunded. You are responsible for the cost of shipping only.

In other words, if you aren’t happy for any reason, just let us know.We’ll give you your money back. We obviously don’t think it’ll come to that, but if you’re even the least bit worried if this will work for you, then put your mind at ease. You either get the results you want or you will get  your money back. It’s as simple as that!

I wish many successes and fascinating discoveries to all current and future Stone users,



Note: this is the first product batch. The next one will be available in a month.

If you want to become one of the first owners of Stone biofeedback, order now.

What’s included in the Pack:

Unleash your Inner Power. Order now.

  • Software Package: 3 games with progress analysis and a motivational system. One extra game free. (Instructions inside the program in English).
  • Biofeedback sensor: a heart rate sensor to be attached to your ear or finger. (Requires only periodic cleaning with a dry cloth).
  • Stone device: analyzes data from the sensor and sends it to the computer via USB. Easy Installation.
  • 24-month warranty.
  • Instruction manual.


Choose your Edition

The system is available in two editions:Professional or Home Edition

Pro. For Professionals.


Pro Edition include unlimited users(limited only by computer capacity). Statistics  include wavelet analysis plots, Poincare plot and Fourier transforms (with window and scale settings)

Click Here

Family. For home use.


Home Edition, up to 3 users, additional users requires additional fee(see below)
Statistics include the Stones score and HRV plot only.

Click Here

Order online at Shipping by regular US mail to mainland US addresses shipped Free-For Priority or International Shipping actual rate applies.