Precise Timestamp vs NTP Inspector

Precise Timestamp records exactly when something happens, to the tenth of a second. Tap a button and the time is saved. Your phone's clock can drift by a second or more. So when the app opens, it checks the time against a time server, and you can see the last sync, the offset and the round trip time. That way you know how much to trust the numbers. What it does: - Record the time with one tap, or record when your finger touches the screen instead of when you lift it - Set up named, colored buttons like "Start", "Lap" or "Car 12", and each one labels its own events - Switch to relative mode to see every event as + or − from a reference event - Events are grouped by day, and you can add a description to any of them - Edit or delete events, or add one by hand if you missed it - Share your event log as plain text - 12-hour, 24-hour or UTC time, light or dark theme, and an option to keep the screen on - Choose your time server: pool.ntp.org, Google, Apple, Cloudflare or NIST

NTP Inspector is an application that allows you to check servers running the NTP protocol over the Internet and report some basic information. It sends an NTP packet from your device to the server and reports backs almost everything included in the response, like the protocol version, mode, the server Stratum, its precision, reference time, as well as whether there is a leap second today or not. With this app you can troubleshoot NTP servers from anywhere, as seen from your device, and not a remote server, with complete privacy. The app was created when I received an alert for one of my NTP pool servers while outside and without laptop access, with no other option to query it to see what's wrong.