TrueOffset vs Tick Sync

TrueOffset measures how far your iPhone or iPad's clock is from the world's time servers, and which way. Compare Network Time Protocol (NTP) servers with one another, see how far apart they are, and set any of them as your reference. FIVE CLOCK FACES - 12-Hour Classic — Traditional analog display - 24-Hour Scientific — Full day on one dial - NTP Offset — Dual second hands show device vs. true time - Digital — Large display with millisecond precision - Time Code — A radio time code spelled out second by second UTC & TAI TIME SCALES Show Coordinated Universal Time (UTC) and International Atomic Time (TAI), 37 seconds ahead of it, beside your local time, with deadbeat second hands that step on each second. TIME SIGNALS Hear the true second. Optional pips are timed against your NTP reference, so the start of each one marks the real second, not your device's idea of it. Choose from the classic broadcast signals, synthesized to their published pitch and timing: Six Pips (Greenwich Time Signal), WWV, WWVH, CHU, Jihō, Moscow Six Pips, and Australia's VNG. Sound them on the hour, every 15 minutes, or every minute. Bluetooth or AirPlay speaker running late? Measure its delay with the microphone and TrueOffset compensates. RADIO TIME CODES A clock sold as "atomic" is a radio listening to a distant station that spells out the time one second at a time. TrueOffset plays the codes of WWVB, DCF77, MSF, JJY (40 and 60 kHz), and BPC and shows each second being decoded as it is sent. Try setting a radio-controlled watch with it (beta), or switch on the DCF77 weather seconds to hear how Germany's station once sent a forecast. TRUEOFFSET MASTER CLOCK Our tribute to the U.S. Naval Observatory's telephone time service. A tick sounds every second while a voice announces your local time and then Universal Time, each ahead of a beep that lands on the true second. Prefer it quiet? Switch the voice off and keep the ticks. TrueOffset is not affiliated with the U.S. Naval Observatory. DUAL-STACK COMPARISON Ask one server over IPv4 and IPv6 side by side, to catch two different machines behind one name or a network that answers for both. FLEXIBLE TIME SOURCES Compare against Apple, Google, Cloudflare, NIST, US Naval Observatory, global NTP pools, or add your own servers. The default reference, ntp.trueoffset.app, is a Safran SecureSync 1200 with its own rubidium atomic clock. Set any source as your reference. QUALITY ANALYTICS Eight chart pages show the character of your time sources: - Overview — Every server at a glance - Offset History — Track drift over time - Offset Histogram — How the offsets are spread - Offset Range — Compare consistency across servers - Round Trip and Offset — See whether network delay moves the offset - Clock Sources — Decode reference clocks (GPS, PPS, Rubidium, Cesium) - IPv4 and IPv6 — Compare one server's two addresses - Rankings — Servers scored by jitter and round-trip time, with the steadiest named HELP IN THE APP What an offset is, why your clock drifts, what UTC and atomic time are, and what each screen shows, explained in the app. For anyone who cares how accurate their time really is, and wants to see the difference, not just trust it. Also on Apple TV. FOR TIMEKEEPERS: TRUEOFFSET FOR MAC Run your own time servers? The Mac app, free in this same listing, reads what they record about themselves and charts it, from six hours to a year: - NTPsec, ntpd, chrony, linuxptp, gpsd, Safran SecureSync, and Timebeat - Logs from a folder, or collected over SSH every hour, read-only - Offset, frequency, Allan deviation, temperature, peers, PTP, GNSS sky plots, and each machine's real-time clocks - Restarts, steps, and holdover found and marked, not averaged in - Your servers compared side by side as a fleet More at trueoffset.app/timekeepers --- In appreciation of Emerald Sequoia's Emerald Time.

When standard time radio signals do not reach your area, or walls and interference prevent your watch from receiving them—Tick Sync provides another path to the correct time. Start with radio-controlled watch assistance. Place the watch near the built-in speaker of your iPhone or iPad and begin manual reception. Tick Sync generates time codes for JJY 40/60, WWVB, MSF, DCF77, and BPC, helping the watch attempt synchronization over a very short distance. For explicitly compatible Bluetooth watches, pair and connect the watch, wait until it is ready to sync, and then send the current local time manually. With Advanced Features, Tick Sync can maintain an eligible Bluetooth connection in the background. When the watch reconnects and becomes ready, Tick Sync normally obtains a fresh NTP correction and sends the time automatically, reducing the need to open the app for every sync. Background timing is determined by iOS or iPadOS and watch connection events rather than an exact schedule. Your time source is not limited to the device’s system clock. Free Single NTP mode queries a server you choose. Multi-NTP mode compares at least three independent sources, finds a majority-agreed time range, rejects inconsistent responses, and displays estimated uncertainty. HIGHLIGHTS • Very-short-range JJY 40/60, WWVB, MSF, DCF77, and BPC radio-controlled watch assistance • Manual and background automatic Bluetooth time sync for explicitly compatible watches • System Time, Single NTP, and Multi-NTP sources • NTP server management, optional location preselection, outlier rejection, and uncertainty estimates • Watch battery level display • No account required Radio assistance, manual Bluetooth time sync, System Time, and Single NTP are free. Background automatic Bluetooth sync and Multi-NTP features require an auto-renewing annual Advanced Features subscription. Tick Sync is an independent utility and is not affiliated with any watch manufacturer. Bluetooth compatibility depends on the watch model and firmware, while background operation depends on iOS or iPadOS and watch connection events. A successful Bluetooth write does not guarantee that the watch applied or displayed the new time. An iPhone or iPad does not transmit a normal 40–77.5 kHz longwave broadcast. Radio-assisted results vary with the device, watch hardware, volume, placement, and interference. Always verify the final time independently before relying on it. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Supplemental Terms of Use: https://ticksync.dishangti.com/legal/en/terms.html Privacy Policy: https://ticksync.dishangti.com/legal/en/privacy.html