Application-based market taxonomy splits demand into neurodevelopmental disorders, psychiatric disorders, sleep disorders, and pain management. Neurodevelopmental disorders (autism, ADHD) dominate with 44 % of 2023 revenue, driven by reimbursement codes in Germany and Japan that bundle 20-session protocols. Psychiatric disorders—adolescent depression and OCD—represent 29 %, but growth is tempered by strict inclusion criteria (age ≥12 yr, medication resistance). Sleep disorders (circadian phase delay, parasomnias) constitute 16 % and exhibit the highest per-capita therapy cost (US$3,200) because treatment occurs during overnight polysomnography. Pain management (migraine, complex regional pain) is the smallest slice (11 %) yet shows the fastest volume CAGR (11 %) as ambulatory paediatric pain clinics adopt low-frequency protocols. Collectively, these four subsegments map precisely to the 2.1 mn target patients eligible for non-invasive magnetic stimulation across the OECD, anchoring revenue projections for the Medical Children's Magnetic Field Stimulator market through 2030.