Emerald Time uses Network Time Protocol to display the current time of day as defined by the international standard atomic clocks. Its accuracy is limited only by network latency and is usually accurate to less than +/-100 milliseconds. Emerald Time does not change the internal clock used by all other iPhone apps.)

Emerald Time alternatives

Watch Tuner Timegrapher

Watch Tuner Timegrapher is a mechanical and automatic watch testing application. It displays the frequency diagram of the watch and measures rate, beat error, amplitude and beats per hour. If you have any questions, suggestions or any troubles using this app - dont hesitate to write me.

  • size 1.3 MB

Official US Time

Ever wanted to know the most exact of exact times? Makrr brings you the answer with the The Official U.S. Time app, powered by the NIST, USNO, and time.gov. We do not guarantee accuracy and this should not be used to establish traceability to the NIST or USNO.

  • rating 4.61538
  • size 8.2 MB

Exact Time - With DST Dates

Sometimes you want to see the exact time on your phone down to the second. Your iPhone is automatically synchronized to precise time sources, so its extremely accurate. Exact Time shows you the current time of your iPhone and also provides the dates of the previous and next Daylight Savings Time (DST) changes making it the perfect companion app for setting all of your other clocks

  • size 4.3 MB

Atomic Clock (Gorgy Timing)

This tool shows you the ultimate precise time of day. To achieve this, it uses a special internet time protocol to fetch the time from an atomic time server. But be aware that running an application all the time, even without display, consumes battery, so please make sure that your iPhone is fully charged before you go to bed, or even better, connect it to your charger.

  • rating 5.0
  • size 10.3 MB

Watch Tracker

Watch Tracker is a revolutionary new app for tracking the accuracy of a wristwatch. Its dramatically easier and more accurate than any previous method. It synchronizes with an atomic clock, measures and records the difference, and displays graphs of all the data points youve recorded.- Uses best-fit analysis to accurately calculate how many seconds your watch gains or loses per day- Displays graphs of rates and variance- Can track multiple watches simultaneously- Saves data in CSV files that can be opened with any spreadsheet softwareWatch Tracker is made by the developer of tChess (the chess app that was featured in Apples Learn commercial for the iPad) and Learn Chess (the Apple Staff Favorite e-book).

  • size 1.3 MB