Ops Clock vs ExSciCalc

Professional grade clock and timer tool with four functions in one app: • World clock • Digital seconds display • Compact format • Over 400 cities • Set custom labels • Clocks sorted automatically • Unlimited number of timers • Count-up timers • Countdown timers • Wall clock timers • End-time notifications • Pre-notifications • Elapsed time and ETA in any zone • Three calculators • Time zone calculator helps plan multi-city conf calls • Time calculator for time arithmetic, including across different time zones • Date calculator for date arithmetic • Event Log • Stores a record of real-time events • Shows elapsed time between events This app is free, shows no advertisements, makes no use of the network and collects no personal information. Available in English, Spanish, French, Italian and Portuguese.

"Extended" scientific calculator has more features than typical calculators, including: • Extended precision (30+ digits), twice that of typical calculators. • Extended memory including a main memory with statistical information, and 10 auxiliary memory values. • Extended space for buttons using scroll windows--no confusing modes and function keys. • Extended functions not found on most calculators including (but not limited to): ◇ Statistical information for calculating standard deviation (tied to the M+ key) ◇ Most common physical constants and mathematical constants ◇ Extensive unit conversion constants ◇ Roots of polynomials and some transcendental equations ◇ Special relativity calculations • And normal functions including: ◇ Normal and hyperbolic trigonometry ◇ Various logs, powers and roots ◇ % calculations including interest and amortization ◇ Temperature conversion ◇ Random numbers ◇ Averages and means