Tablexia is an app for children with dyslexia in secondary schools availablefor free in Czech, Slovak and German language for iOS and Android. Tablexiaaims to support the development of cognitive abilities (e. g. working memory,spatial orientation, phonological discrimination). Tablexia is an educational app for children with dyslexia in secondaryschools. The results of dyslexia are problems with reading and writing. It iscaused by weakened cognitive abilities such as a working memory, attention,spatial orientation or phonological processing. Tablexia aims to support thedevelopment of those abilities, which can help to improve the reading andwriting skills. Tablexia is an open source game developed by the CZ.NICassociation. It is available on Google Play and App Store for free in Czech,Slovak and German language. The app contains 8 games. Each focuses on one ofthe cognitive abilities. All the games are connected with a detective theme.Young detective learns how to become an expert in chasing the robbers orremembering the right order of the sounds from a crime scene. A part of theapp is also an Encyclopedia, where kids can learn about dyslexia and finduseful tips how to overcome the troubles by reading and writing.