Opening the iTunes Store.If iTunes doesn’t open, click the iTunes icon in your Dock or on your Windows desktop.Progress Indicator

iTunes is the world's easiest way to organise and add to your digital media collection.

We are unable to find iTunes on your computer. To buy and download Riddle Buster by X-Soft (Germany) ; T.R.S., get iTunes now.

Do you already have iTunes? Click I Have iTunes to open it now.

I Have iTunes Free Download
iTunes for Mac + PC

Riddle Buster

By X-Soft (Germany) ; T.R.S.

Open iTunes to buy and download apps.


The application helps you to solve 5 popular types of
numeric riddles:

a) Pyramid :
The value c directly above 2 fields a and b in the line below is computed using
the formula c = a+b , c=a*b , c=a/b or c=a-b
(with fraction and decimal number support)

b) "Count the digits"
A popular question in TV quiz shows:
How often can you find a certain digit in a block of numbers ?
(e.g the digit 3 in the numbers between 0 and 99)

c) Sudoku
You can enter values from an external riddle or try to solve
2 built-in riddles.

d) editor for numeric riddles where numbers and operators are represented by matches

e) numeric and interactive 3D editor for block riddles
(i.e. a set of numbers in a 2D matrix represents a set of bars with different height values in 3D space)
A predefined 'hill' and 'mountain' shape (with pinch-support to optionally change the shape of the mountain) can be selected.

Riddle types a) and c) can be solved step by step or completely in one step using
the [GO]/[go] button (with the same user-interface as realized in "Mathematics Tool").

Pinch and scroll support for the first 3 riddle types allows magnification of interesting areas,
easier entry of digits and the selection of a specific number-block for counting in
riddle type b)

Depending on user interest riddle type d) might be extended
with an automatic solving aid in upcoming versions.

application languages : English and German
(switched by horizontal scrolling of the help-page)

What's New in Version 2.2

- task #1 : context sensitive information bubble on screen about virtual keyboard usage

- task #3 :
- added a sample matches equation (labelled '#2')
- more sensitive digit selection
- permanent 'INS' key
- the 'DEL' key removes a number when 0 has been reached
- graphical display of possible match moves for a user-selected digit (with tap support to perform the move)

- task #5 : pinching in and out is now possible for the probability bowl (this enhances ball color-switch performance
on smaller iOS device screens)

- task #10 : Bingo number generator with dutch,german and english text output for a selected number
- task #11 : Caesar cipher wheel (ROT-n , shift-cipher)

iPhone Screenshots

iPhone Screenshot 1
iPhone Screenshot 2
iPhone Screenshot 3
iPhone Screenshot 4
iPhone Screenshot 5
Riddle Buster
View In iTunes
  • USD 1.99
  • Category: Education
  • Updated: 14 November 2013
  • Version: 2.2
  • Size: 0.3 MB
  • Language: English
  • Developer: Ulrich Penski

Compatibility: Requires iOS 5.1 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.

Customer Ratings

We have not received enough ratings to display an average for the current version of this application.