Best rental income tracker for teachers

There are roughly 40-60 general real estate investment apps and property management tools on the market, but fewer than 5 actually target teachers or education professionals specifically. The common failure is that existing tools (Landlord Studio, Buildium, AppFolio) are either built for professional property managers handling 10+ units, or they're generic expense trackers that require manual categorization for every deduction. Teachers managing 1-3 rental properties face two pain points: (1) they need education-specific tax deduction templates (summer maintenance windows, mortgage interest during sabbaticals), and (2) they need mobile-first, low-friction data entry because they're entering expenses between grading and lesson planning. The real gap is that no one has built a micro-product with pre-loaded teacher tax scenarios, one-tap expense logging with OCR receipt scanning, and quarterly tax projection that speaks their language (not investor jargon). A founder entering this space should focus on simplicity over features—teachers don't want 47 reporting options, they want confidence that they're not missing deductions specific to their situation. The opportunity lies in verticalization: build narrowly for teachers first, prove unit economics, then expand to other professionals with similar constraints (nurses, firefighters with side rentals).