Inclusion Criteria:  Neurologically stable, as judged by the clinician. Onset of stroke within 1 month prior to randomization. Diagnosis of dysarthria caused by stroke as confirmed by a neurologist, neurosurgeon or rehabilitation doctor . Have appropriate cognitive function to use PATAKA without problems based on the K-MMSE(Korean-Mini-Mental State Examination) score of 21 or higher within 1 month prior to randomization. Able to walk or move independently, or by using a walking aid (e.g., walkers, canes, or wheelchairs). Intact vision, hearing, language skills, motor skills, as well as, comprehension to proceed assessment, as determined by the investigator. Able to give informed consent to participate  Exclusion Criteria:  Unable to measure articulatory or orofacial functions due to organic causes/lesions in articulatory and cervical structure. Have comorbid neurological conditions that could impair study participation in the opinion of the investigator, such as dementia (Alzheimer's disease, vascular dementia, Central Nervous System Infection (e.g. HIV, syphilis), Creutzfeld-Jacob disease), Pick's disease, Huntington's disease, Parkinson's disease, etc. K-MMSE(Korean-Mini-Mental State Examination) score of 20 and below at the time of screening. CDR(Clinical Dementia Rating) score of 1 or higher/GDS score of 3 or higher at the time of screening. Received dementia treatments within 3 months of screening. Those who need to take medications that may affect cognitive function during the period of the clinical trial. Co-medication prohibited during the entire trial period: medications for dementia treatment, CNS(Central Nervous System) stimulants, anticholinergics, tricyclic antidepressants, typical antipsychotics, and sleeping pills (excluding rapid-acting sleeping pills). Co-medication permitted if continued use of medications were at a stable dose for 2 months prior to randomization: atypical antipsychotics, anxiolytics, antidepressants (excluding tricyclic antidepressants), thyroid hormone, and rapid-acting sleeping pills. Uneducated or illiterate. Diagnosed with serious mental illness such as severe depression, schizophrenia, alcohol addiction or drug addiction. Unable to use digital therapeutics due to severe speech and language impairment, as judged by the clinician. Refusal to participate