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Frequently Asked Questions
Quick answers to common support questions
Yes — every calculator on NexProTools is 100% free, with no premium tiers, paywalls, or signup requirements. We monetize through non-intrusive advertising and optional affiliate recommendations.
Our calculators use industry-standard formulas and are rigorously tested against authoritative sources. Financial tools use standard compounding formulas, health metrics follow WHO/CDC guidelines, and all results are computed client-side for instant accuracy.
Absolutely! We love hearing from users. Send us your calculator idea or feature request via the contact form below or email us directly. We prioritize requests based on community demand and utility.