Potential of encouraging language production based on information and communication technology Acquisition of morphology is a complex and long process, especially in morphologically rich languages like Croatian. The gradual acquisition of morphological rules in children can be seen through the mistakes done in word-formation. These mistakes can be used as an indicator of progress in establishing linguistic rules, as well as the language productivity. However, not all children follow the same pattern of language development. During the acquisition of language, in approximately 5%-8% of children, language impairment (LI) occurs. Children with language impairment most frequently have difficulties with morphology, which can be seen as mistakes made while using grammatical morphemes for pluralisation. Information and communication technology (ICT) is the most prominent technology of today. There is an increasing number of interesting solutions for mastering various language skills. Considering the lack of high-tech solutions which would aid language development in Croatian, the importance of creating an app that would encourage mastering grammatical morphemes for noun and verb plural is evident. The ICC-AAC app „Jezična gradilica“ was designed and developed through interdisciplinary collaboration of the Faculty of Education and Rehabilitation Sciences and the Faculty of Electrical Engineering and Computing. „Jezična gradilica“ is the first app in ICC-AAC project that supports morphological development of preschool children. The aim of this study was to investigate mastery of grammatical morphemes for noun and verb plural in children of typical language development (TLD) and to compare their results with results of the children with language impairment (LI) using newly developed ICT-AAC app „Jezična gradilica“. Likewise, the aim was to investigate the interest for using the app and the level of its accessibility. 41 participant, aged between 5;00 and 6;01 years, was included in this study. Participants were divided in two groups: 30 participants of typical language development and 11 participants with language impairment. Results have indicated high level of mastery of grammatical morphemes for noun and verb plural in TLD preschoolers. The success of TLD and LI children in solving noun and verb plural tasks differed significantly. Statistically, the most significant difference was the number of audio record repeats needed for solving the task. The participants have expressed high interest for using the app and have evaluated the app as highly accessible. Taking results into account, it seems that ICT-AAC app „Jezična gradilica“ can replace commonly used methods for encouraging the improvements of language skills, such as printed tasks. It can help speech and language pathologists and other specialists in preschool institutions, but it can also be used in family surroundings. The app can be downloaded for free from three different platforms which makes it available to a wide spectre of users.