Estiball – Train Your Estimation Skills

Do you have a good eye for numbers? Test and improve your visual estimation skills with Estiball!
Estiball is a fascinating estimation game that challenges your ability to quickly and precisely determine the number of objects. In each round, between 20 and 100 colored balls appear on the screen. Your task: Estimate how many balls there are – without counting!

SHARPEN YOUR COGNITIVE PERCEPTION
Estiball not only increases your fun factor but also trains important cognitive skills:
Visual Perception: Learn to quickly estimate quantities without counting
Number Sense: Improve your intuitive feel for numbers and quantities
Quick Thinking: Train to make decisions under time pressure
Precision: Refine your estimation skills with each game

SIMPLE GAMEPLAY, PROFOUND CHALLENGE
The gameplay is simple, but the challenge grows with your abilities:
Observe: A random number of colored balls appears on the screen
Estimate: Enter your guess for how many balls you see
Analyze Results: Discover how close you were to the actual number
Improve: Learn from your results and improve your technique

DYNAMIC GAMING EXPERIENCE
Each round is different:
Dynamic Colors: Each game presents a new color combination for the balls and background
Random Quantity: The number of balls varies between 20 and 100
Detailed Evaluation: Learn not only the exact deviation but also the percentage difference
Celebrate Perfect Estimations: Special animations reward you for precise estimations

TRACK YOUR PROGRESS
Visual Progress Indicator: An intuitive accuracy bar shows how close you were to the correct number
Percentage Deviation: Learn by what percentage you over- or underestimated
Immediate Feedback: Receive direct feedback on your performance

ACCESSIBLE TO EVERYONE
Multilingual: Available in English, German, Spanish, French, Italian, Russian, Japanese, Korean, Chinese (simplified and traditional), Portuguese, and Arabic
Minimalist Design: Clear, distraction-free user interface
Intuitive Controls: Specially designed input field for quick and easy estimations

PERFECT FOR...
Students: Train mathematical skills in a playful way
Professionals: Keep your brain fit during short breaks
Seniors: Keep your cognitive abilities sharp
Math Enthusiasts: Challenge your estimation skills
Families: Compare your estimation abilities in friendly competition

ENDLESS GAMING FUN
With the "New Game" button, you can immediately start the next round. The random number and color of the balls ensure that each game presents a new challenge.

SCIENTIFIC BACKGROUND
Estiball is based on the concept of "subitizing" – the human brain's ability to recognize small quantities without counting – and extends this concept to larger number sets. Regular training of this ability can lead to improved mathematical skills, faster visual processing, and better number sense.

DID YOU KNOW?
The ability to quickly estimate quantities was vital for our ancestors – whether hunting, gathering, or recognizing dangers. Today, this ability is useful in many professions and everyday situations, from mathematics and science to financial decisions.
Estiball – How good is your number sense? Download the app now and find out!