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 up to date internet browser (see below). They do not depend on the operating system and can be used on Windows, Mac OS, iOS, Android, Linux and so on. We do not recommend using our systems on mobile phones due to the small size of their touch screen. The minimal screen resolution for Calcularis is set to 750 x 450 pixels.

The internet browser needs to support HTML5, which all modern browsers do. If a problem shows up with our applications, please try to update your internet browser to its most current version. It is not necessary to install any plug-ins.

List of most current browsers and their versions

We list the oldest versions for the most common browser and systems, on which our software still works. Please be aware that for iOS devices, the iOS version is deciding, if our applications can be used on them, independent of the browser you might install on the device, because iOS forces all browsers to use its own iOS web views. Therefore, also up to date browser versions have to use old web views on old iOS devices. On all other devices, the browser determines whether the programs work 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 learning programs are for

Dybuster provides specialist support for learners 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. On the contrary: 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 to the learning content in real time, enabling learners to be supported in accordance with their skills.

Recommended age range

Dybuster is designed to accommodate all levels of starting knowledge and can thus provide age-appropriate learning for a wide range of ages.

Despite this, we recommend that the software is used on a limited basis prior to age seven – not only because of the program design and content, but also because of the child’s general ability to handle computers and software. The software can 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 the pool of vocabulary can be expanded limitlessly. This makes it suitable for using into adulthood.

When a child has difficulties in both language and maths

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 feasible 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 of 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 enthusiasm.

If the program hangs

The program can hang unexpectedly at any time. If this happens, it will cease to display new questions or to allow user the question to click on things or navigate around.

In this case, the first thing to try is to reload the website. Depending on what type of computer you are using, this can be achieved 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 the audio output.

As a first step, check whether 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 the corresponding key 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 login again or 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 colours, each of which represents a different letter group.

Starting from the user’s first session, these are reinforced consistently as a component of the multisensory learning journey.

If a child is completely colourblind, this assistance is rendered almost completely useless; however, they can still rely on the other multisensory 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 colourblindness is the confusion of green and red, which occurs predominantly in male learners. Though this can render it slightly more challenging for them to engage with the colour-based aspects of the games, they can still use the software successfully.

Not all multisensory aids are perceived as useful

Orthograph provides learners with eight different multisensory aids. Alongside the assignnment of letters to colours, 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 the others. This may even indicate that not all of their multisensory 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 learners with and without established language difficulties. It trains a word pool consisting of several thousand items of vocabulary.

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.

When a child has persistent problems in one area, e.g. crossing the tens boundary

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

Calcularis uses different colours to represent the hundreds, tens and units positions, which helps learners to distinguish between them. This is particularly important for those who mix up tens and units when writing down a spoken word on paper (forty-three = 34, not 43).

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