RC Circuit vs Any Formula

This app is used to calculate the RC charging and RC filter circuit. It is suitable for hobbyist or electronic engineer. Features * Calculate time constant from R, C * Find component value R,C from time constant * Get voltage at time t in RC charging / discharging * Calculate cutoff frequency by R, C * Find component value R,C from cutoff frequency * Save data to CSV files * Upload CSV via AirDrop / iCloud Drive * Support English, Traditional Chinese, Simplified Chinese, German, French, Italian, Spanish, Portuguese, Japanese

Any Formula puts 572 scientific, engineering, and financial formulas at your fingertips. From Ohm's Law to compound interest, from Pythagorean theorem to gas laws — calculate anything, anywhere. **9 CATEGORIES** Mathematics, Physics, Electronics, Mechanics, Chemistry, Finance & Business, Statistics, Health & Medical, Computer Science **POWERFUL CALCULATION ENGINE** Enter your values, tap Calculate, and get instant results. Smart input validation ensures your numbers are in the right range before computing. Results are clear, accurate, and ready to share. **FREE FEATURES** - 10 free formulas in every category (90 total) - Search all 572 formulas by name, description, or category - Smart suggestions — tell the app what you're working on - 5 favorites for quick access - 5 saved calculation history records - Auto-detect metric system from your device locale - Light, Dark, or Auto theme - Real-time input validation with range guidance **PRO FEATURES (One-Time Purchase)** - Unlock all 572 formulas — no limits - Share results as text - Export results as image or PDF - Up to 500 favorites and history records - Edit and multi-select delete in history - Unit customization per field with auto-conversion - Related formula suggestions for chained workflows **BUILT FOR EVERYONE** Whether you're a student solving homework, a tradesperson on a job site, an engineer at your desk, or a professional running quick calculations — Any Formula has you covered. **PRIVACY FIRST** All data stays on your device. No accounts. No tracking. No cloud uploads. Your calculations are yours alone.