LPAR vs Arvee AmpSmart

LPAR ( License Plate Augmented Reality ) is the best resource for motor vehicle license plate types, options and costs for each state in the United States. This app allows users to leverage augmented reality to view how different license plates would look on their automobile, truck or motorcycle. The database contains images of various license plate types (vanity, military, standard, organization) from each US state. Updates are regularly posted in the LPAR database to keep current of license plates types.

Understand your RV electrical system with Arvee AmpSmart — the most comprehensive free RV power calculator available. Whether you're plugged in at a campground, dry camping off-grid, or planning a battery and solar upgrade, AmpSmart helps you make informed decisions about your RV's electrical system. THREE CALCULATION FLOWS: Shore Power Check — Will running these appliances trip my breaker? - Analyze 15A, 20A, 30A, and 50A hookups - See total load vs. available capacity at a glance - Get warnings for overloads, surge/startup risks, and the 80% continuous load rule - Understand shared circuit limitations on household outlets Off-Grid Power Budget — How long can I last on battery and solar? - Model your battery bank by chemistry (Flooded Lead-Acid, AGM, LiFePO4) with accurate depth-of-discharge and efficiency factors - Add solar panels with location and season-based peak sun hour presets - Factor in generator support, inverter efficiency, and cold weather derating - See daily consumption breakdowns, endurance estimates, and solar balance System Builder — What battery, solar, and inverter setup do I need? - Set your off-grid goal (days between charges) and let AmpSmart size the system - Compare battery chemistries side by side (capacity, cost, weight, lifespan) - Get solar, inverter, and charge controller recommendations for your location - Enter your existing system to see exactly where it falls short REAL-WORLD RV APPLIANCE LIBRARY: - 37 curated presets with practical power values (A/C, microwave, fridge, CPAP, Starlink, and more) - Three usage modes per appliance: hours/day, minutes/day, or duty cycle % - Add custom appliances for anything not in the library - Surge/startup wattage tracked separately for compressor-based loads LEARN AS YOU GO: - Contextual help articles at every step explain watts, amps, battery chemistry, solar peak sun hours, inverter efficiency, and more - Built for RVers who want to understand their system, not just get a number SHAREABLE REPORTS: - Generate a branded Power Profile Report from any calculation - Share with others or download as a file FREE & PRIVATE: - Completely free — no ads, no in-app purchases, no paywalls - No account required — just open and calculate - No personal data collected — your information stays on your device - Works offline — no internet connection needed - Available on iPhone, iPad, and Mac Made with care by Arvee — the RV trip planning platform that helps RVers stay connected with friends on the road.