Best property tax appeal apps, 2026

Most US homes are over-assessed, yet the firms that promise to fix it take a quarter to a third of your savings for years. These two apps hand you the same appeal workflow so you keep all of it. Lower is an end-to-end workbench: scan your county assessment notice with on-device OCR, work up a comparable-sales worksheet, store evidence photos, and generate a state-specific appeal letter. Assessr suits anyone juggling more than one parcel, with a multi-parcel register, a comp grid that computes $/sqft adjustments, a photo-backed defect log, and deadline tracking for all 50 states.

FAQ

Are these property tax appeal apps free? ▾

Yes. Both Lower and Assessr are built so you keep your full savings, with no contingency cut, unlike services that take 25-50% of what you save. They are designed for DIY homeowners doing their own appeal.

Do they work without an internet connection? ▾

Yes. Both apps run on-device, with no account required. The assessment-notice OCR, comparable-sales and comp-grid worksheets, and evidence photos all stay on your iPhone rather than on someone's server.

Which one should I use? ▾

Choose Lower if you want a single end-to-end appeal workbench for one home, ending in a state-specific appeal letter. Choose Assessr if you have multiple parcels or want a comp grid with computed $/sqft adjustments, a defect log, and deadline tracking across all 50 states.

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