For iPhone & iPad

A clock that actually shows the seconds.

iOS’s built-in Clock app deliberately hides the second hand. Accurate Clock fills the gap — a clear analogue dial and a precise digital readout, SNTP-synced to time.apple.com, built for setting mechanical watches that hack.

View on GitHub See screenshots No tracking. Ever.
Accurate Clock app icon

What it does

Just a clock. A really good clock.

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Sweep or tick

Pick a smooth sweeping second hand, or a per-second tick. Whatever matches the watch you’re setting.

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SNTP-synced

One round-trip to time.apple.com on launch, with millisecond-level offset shown so you know what you’re looking at.

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48 cities

The exact city set from the Casio AE-1200 World Time module, sectioned by UTC offset.

✓

Nothing else

No accounts, no analytics, no ads, no trackers. The only network call is the time check.

In use

Light or dark, your call.

Sweeping second hand

Sweep mode — smooth analogue motion.

Ticking second hand

Tick mode — one step per second.

Time zone picker

Time zone picker — 48 cities, AE-1200 set.

Tokyo time

Non-local zones show a chip with the city.

Why this exists

Setting a watch on the minute.

If you’ve ever tried to set a mechanical watch precisely — pull the crown, line up the minute, and release on the second — you’ve probably noticed iOS won’t help. The stock Clock app hides seconds on purpose.

A clock without seconds is a clock you can’t set anything else by.

Accurate Clock is the smallest possible app that solves this: a clear analogue face, a digital readout with hundredths, and an honest indication of how far off your device clock is from network time.