the author of this app says:
You must find the hidden places and symbols in four boxes. These symbols are shown in the above list and you have only six tries to find out the true places. After that the solution is displayed. Using the appropriate palm pen you select the symbols from the list and/or from preceding boxes. One click on the vertical button will display the presence of the symbol in its correct place (the black bowls).
- 2.0 and Above