The study investigated the impact of a mobile health application on the management of patients with newly formed arteriovenous fistulae (AVF) who started hemodialysis through a dialysis catheter. Patients with the application (August 2023 – April 2024) were compared with a control group with traditional follow-up using a 1:1 propensity score matching (PSM) analysis. The main outcomes measured were central venous catheter (CVC) days from AVF creation to removal, time to first AVF cannulation, and complications within 6 months after surgery. In the PSM cohort, CVC length was 61.5 (53.5; 68.8) days in the application group versus 93.5 days in the control group (p < 0.05). Time to first cannulation was 57.0 (49.0; 62.8) days in the application group and 83.0 (69.3; 92.0) days in the control group. At 6 months, there was no significant difference in complications between the groups. The results were independent of the patient's age, level of education and level of the dialysis hospital. Mobile applications thus shorten CVC days and support earlier AVF cannulation without increasing the risk of complications.