Dementia is a growing health concern in Malaysia and places a heavy burden on family members who act as caregivers. Many caregivers struggle with limited knowledge, negative attitudes, and challenges in daily caregiving practices. These issues increase caregiver stress and reduce the quality of care for people living with dementia. The DemensiaKITA mobile health application was developed to support caregivers by providing educational content, self-help tools, and practical guidance. This study will evaluate whether using the DemensiaKITA app can improve caregivers' knowledge, attitudes, and caregiving practices (KAP), as well as reduce caregiver burden. This is a non-randomized controlled trial involving dementia caregivers in Kuala Lumpur and Selangor. Participants in the intervention group will use the DemensiaKITA mobile app for a set period, while the control group will continue with usual support. Outcomes will be measured before and after the intervention using validated questionnaires. The results of this study will provide evidence on the effectiveness of a locally developed mobile health application in supporting dementia caregivers in Malaysia. If successful, this digital approach may be scaled up to improve caregiver support and dementia care in other settings.