Croobie has iOS-Apps in the categories smart games, smart
learning, and rather dumb tools.
Croobie specializes in mathematichal programming, including Optimization/AI, Signal Processing, and
Smart games are also known as intelligames.
They are fun and challanging, and they thus makes the player smarter.
We have several such games!
We master the subject of producing sudokus. We have defined 5 levels of
difficulty, from Zero Sudokus
, for very young children (age 6), to
Deep Thought Sudokus
, for true experts.
By using computers, we have scrutinized tons of
sudokus and examined what kind of "rules" one must apply to solve them!
Our objective have been to find sudokus
that are very fun to solve!
To find out which level suits you, try our free Sudoku Mix.
It contains 1 free sudoku at each level of difficulty.
If you like sudokus, you should definitely visit our sudoku page for more info!
This is the Classic Game that is also known as Connect Four
, Four in
In this game, you
(artificial intelligence) take turn to place bricks in a bottom up
order on a game board. The goal is to line up 4 bricks
the opponent does it! Our AI is smart
, and our UX is superb
Please visit our i4Row page
for more information!
is our best
smart-game so far.
Novel, fun and clever.
Easy to learn, impossible to master!
Meet the mastermind! This App is really not a game
, but an AI Solver
the Mastermind game from the 70:th!
-Spooky, it reads your mind!
This is the classic memory game
now called remember cards
, for iOS.
You can download the App for free, and also play the small game board for free!
The App has no adds!
The App's user interface is easy to understand (and it can therefore be played by young kids)!
It is a family game, but if you like to play it alone you can play with the built in robots!
Memory, Recall Card
A somewhat older version of our Memory game is also available on
There are several ways in which a computer can help a student to truly understand a
topic! One approach is to let an artificially intelligent tutor present
a step-by-step solution to a problem that the student has made up! A
different approach is to let the student play with a simulator. We use
both these approaches in our smart educational Apps!
Fractions Learning Calculator
This Fractions Learning Calculator
will help the user to understand how to calculate with
fractions. The user presents a math-problem, and can then watch the
AI-based tutor solve that problem step by step.
Smart learning Apps targeting higher education in electrical engineering and computer
The learning tool DC Sim
can simulate an electric circuit with multiple batteries, current generators, on/off-switches and resistors.
This is a fun tool for those of us who knows the laws of Kirchhoff et al. As the tool is quite playful, we believe it will boost anyones curiosity and let him or her mature as an electrical engineer.
The Sampling Theorem
The learning tool aliasing
advanced studies of the Shannon/Nyquist Sampling Theorem. This is
advanced math! The App is
completely free, but please do
not download it unless you are already familiar with the theorem and
like to acquire a deeper understanding!
This is an expert tool for people interested in audio.
If you like to test e.g. your headphones,
AirPlay enabled speakers, or maybe some device you are building your self,
then this signal generator may be of use.
We call it signalator
This Percentage Template
Tool will help the user to answer questions such as:
If 7% of X is 250, then what is X?
The tool is targeting people who does not like to learn math, but
still encounters percentage problems in their daily life. Must have?
Most people takes some kind of pills, medicine, or vitamines.
But it is hard to remember the pills, when the pills where taken it is hard to remember if that was the case.
The Pills Ping
Tool is a friendly App that solves these problems. The App will remind you to take your pills, and it will also keep track your most recent medical history.
Your feedback is important to us. Do you have support questions or tips? Please visit the support page, or email us at
Associated with Appagonia.