Precision Calc Pro vs VoltLog

Precision Calculator is a professional mathematical calculation tool supporting complex mathematical operations, function calculations, and equation solving, suitable for students and engineers. Key Features: • Scientific Calculation - Support trigonometric, logarithmic, exponential functions • Precision Operation - High-precision calculation with accurate results • Formula Solving - Support equation solving and formula calculation • History Records - Save calculation history for easy reference • Unit Conversion - Built-in common unit conversion functions • Offline Usage - No network needed, calculate anytime anywhere • Completely Free - No ads, focused calculation experience Why Choose Precision Calculator? • High-precision calculation with reliable results • Comprehensive functions to meet various calculation needs • Offline usage without network connection • History records for easy review and verification • Clean interface with intuitive operation • No ad interference, focused on calculation Whether you're a professional or everyday user, Precision Calculator meets your needs and is an indispensable assistant.

VoltLog is a field tool for FPV pilots who use LiPo, LiHV, and Li-ion battery packs without smart battery electronics. After a flight, log the pack voltage and VoltLog shows the safety status of each battery on a clear, color-coded dashboard. The goal is simple: know which packs are safe for storage, which need charging, and which should not be left full for too long. Built for FPV battery routines: - Track battery packs with name, brand, cell count, capacity, chemistry, and cycle count - Log voltage per cell with a large custom keypad - See STORAGE, CHARGED, FULL, FULL RISK, DISCHARGED, and CRITICAL states at a glance - Open full cycle history for every pack - Set global and per-battery alert timing - Use local notifications for risky full packs and low-voltage reminders - Work offline-first with local Drift storage - Secure or switch accounts with Supabase Auth when you want cloud-backed data VoltLog is not a charger, cell checker, or battery management system. It is a practical logbook for pilots who already measure voltage and want a faster way to keep track of many packs. Designed for the field, not a desk: - High-contrast dark dashboard - Large battery tiles - Fast voltage entry without the system keyboard - Battery archive for retired packs - English and Polish interface If your FPV case has more packs than memory can reliably track, VoltLog gives you one place to see what needs attention before battery degradation becomes expensive. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/