Frequently Asked Questions

This page provides answers to some of our most frequently asked questions.

Both learning systems may be played on any device

Orthograph and Calcularis can be used on any device with an updated internet browser (see below). They can be used on any operating system: Windows, Mac OS, iOS, Android, Linux etc. We do not recommend using our programs on mobile phones due to the small screen size. The minimal screen resolution for Calcularis is set to 750 x 450 pixels.

Your internet browser must support HTML5, which all modern browsers do. If you encounter a problem, please try to update your internet browser to the most current version. You are not required to install any plug-ins.

List of most current browsers and their versions

The following list shows the oldest versions of the most common browsers and systems that can run our software. iOS users be aware: your iOS version will decide, if your device can use the software, not the browser you have installed on the device. This is because iOS forces all browsers to use its own iOS web services, so newer browsers on older iOS version will not work. On all other devices, the browser determines whether the programs can run or not.

iOS (for iPads): iOS 10 or later

Safari on Mac OS (OS X)

  • Full support for Safari 11 or later, i.e. for Mac OS 10.13 (or 10.11+ with updated Safari) or later
  • Mostly functioning with Safari 9 i.e. from OS X 10.11 (or 10.9+ with updated Safari)
  • Note: for older OS X versions back to 10.8, you can try to use the most recent versions of Chrome or Firefox being available on that system.
  • Note: you can not use Safari to make your own recordings in the Orthograph Module Editor or Coach, because Apple did not implement microphone usage for Safari. Use one of the browsers mentioned below instead.

Android (e.g. tablets by Samsung): Android 4.4 or later (with Chrome)

Chrome: 45 or later

Firefox: 51 or later

Opera: 35 or later

Microsoft Edge: 14 or later

Internet Explorer
Orthograph works with Internet Explorer 11, but Calcularis does not. We do not recommend the usage of Internet Explorer, because this browser does not fully support HTML 5 and Microsoft does not update it anymore (except for security patches). Please use Microsoft Edge instead.

Who our programs are for

Dybuster is designed to provide special assistance for students with dyscalculia or dyslexia in the form of its motivational learning systems. Numerous studies have proven the effectiveness of these systems and have demonstrated the considerable progress achieved by those with learning difficulties.

However, this doesn’t mean that other children can’t benefit from the same advantages. Thanks to the innovative structure of the programs, both Calcularis and Orthograph can be used without the help of an adult and are automatically programmed to make tailored adjustments in real time, enabling students to learn based on their skill level.

Recommended ages

Dybuster is designed to accommodate all grade levels, providing age-appropriate learning to a wide range of ages.

However, we recommend that the software not be used prior to age seven – not only because of the difficulty and content, but also because of the child’s general ability to understand computers and software. In this case, the software should be used with younger children in the presence of a supervising adult.

In terms of its content and number range, Calcularis can be used effectively up to the end of primary school. In the case of established learning difficulties, it can also be used into secondary school. Orthograph does not have an upper age limit, since vocabulary can always be expanded. This makes it suitable for use into adulthood.

When a child has difficulties in both language and math

The programs are accessed using a login ID, which in turn is affiliated with a licence for one of the two programs. In order for both programs to be used at the same time, two licences are required.

Although it is technically possible for a child to use Orthograph and Calcularis in parallel, we do not recommend this. According to our research, the optimal training intensity for our programs is 3-4 sessions at 15-20 minutes per week. If both programs were used, the child would have to sit at the computer every day and would likely start to lose their motivation or become overwhelmed.

If the program freezes

The program can freeze unexpectedly at any time. If this happens, it will stop displaying new questions or prevent users from clicking or navigating around the application

If this happens, first try reloading the website. Depending on what type of computer you are using, you can do this by pressing the “F5” button or clicking on the round loading symbol at the top of the browser window.

If the problem persists, close the browser completely and open it again.

In addition, please make sure that you are using the most recent version of a supported browser (e.g. Edge, Chrome, Opera, Firefox, Safari). For compatibility reasons – and due to the discontinuation of updates by Microsoft – we recommend against the use of Internet Explorer.

The program has stopped playing sound

If the program suddenly stops playing sound, there can be several reasons for this. It can be linked to a problem within your computer settings or by other programs or websites blocking audio output.

First, check whether the sound is switched on in your operating system. You can do this by clicking on the speaker symbol at the bottom right-hand corner of the screen (Windows) or pressing one of the volume keys on your keyboard (Mac). Also ensure that any headphones or speakers you are using are properly plugged in.

If the problem persists, log out of the learning system and log in again. You can also reload the website by pressing the “F5” key or clicking on the round loading symbol at the top of your browser window.

If the problem still isn’t resolved, close the browser completely and open it again.

Orthograph can still be used

For the most part, Orthograph works with a selection of eight colors, each of which represents a different letter group.

Starting from the user’s first session, these are reinforced consistently as part of the multi-sensory learning journey.

If a child is completely colorblind, this assistance is rendered almost completely useless; however, they can still rely on the other multi-sensory aids, including different geometric shapes for lower and upper case letters, intonation playback, word topology structures and visual light effects.

Far more common than complete colorblindness is red-green colorblindness, which occurs predominantly in male students. Though this can render it slightly more challenging for them to engage with the color-based aspects of the games, they can still use the software successfully.

Some multi-sensory aids may not be useful for everyone

Orthograph provides learners with eight different multi-sensory aids. Along with assigning of letters to colors, it uses movement, light effects, sounds, shapes, textures, speech, and word topology.

In rare cases, a child may react less positively to one of the aids than to the others. This may even indicate that not all of their multi-sensory channels are being used. Despite this, the other aids provided by the software can still be used effectively. The most effective aids will vary from child to child – and this is perfectly normal!

Orthograph expands a child’s basic vocabulary

Orthograph is a spelling training system for students with or without language learning difficulties. It trains several thousand vocabulary words.

Despite the extensive nature of the software, it trains only word structure and spelling, not the actual meanings of the words. However, translations can be displayed in the foreign language modules if needed.

If a child continues to struggle in a particular area

Currently, Calcularis consists of 17 learning games, each of which has its own sub-categories and a varied range of question styles for training different skills. This results in a total of more than 50 game variants that work together to help the child reach their goal.

Because multiple games and game variants are designed to train the same skill simultaneously, Calcularis can switch automatically between games. This variation keeps the games interesting and ensures that the child stays motivated.

When a child is already familiar with other color codes for numbers and quantities (e.g. the Montessori method)

Calcularis uses different colors to represent the hundreds, tens, and ones positions, which helps learners to distinguish between them. This is particularly important for those who mix up tens and ones places.

If, for whatever reason, a child is not able to work with the default color coding system in the software (e.g. due to total color blindness or red-green color blindness), adjustments can be individually made for each child in Calcularis Coach.