AtomicClock: NTP Time

Name: AtomicClock: NTP Time
Rating: 4.8 (5540 reviews)
Author: Timo Partl

By: Timo Partl App

Precision Clock, UTC Reference

Overview

Version:

3.6.24

Last updated: 2026-09-19

Features & Capabilities

AtomicClock: NTP Time provides a clear local or UTC reference using time retrieved from NTP servers connected to atomic-clock references. View the time with customizable analog and digital clocks, selectable clock faces and hands, 12-hour or 24-hour formats, smooth seconds, ticking sounds, and the Greenwich Time Signal.

Use AtomicClock to check timestamps, set watches and wall clocks, prepare cameras, or compare time across devices. Technical details include round-trip time and server stratum. The free app includes optional AtomicClock Pro, a one-time purchase that removes ads and unlocks additional customization. AtomicClock displays reference time for comparison and does not change your device’s system time.

User Growth & Download Statistics

App Data Design

By:

Timo Partl

Rating:

4.80

(5,540) 11 new ratings

Version:

3.6.24 Last updated: 2026-09-19

Version code:

891627014

Creation date:

2018-07-25

Compatible devices:

Size:

17.04MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-09-23

Compare stats and ranking:

Ranking

# 24,275 ▼ 21

Other rankings

#82 in clock keyword 29 ▲ 14

Other platforms

AtomicClock: Exact NTP Time (v2.1.21)

606,436 4.73

(18,593)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Timo Partl

Apple Apps Store

https://apps.apple.com/us/app/atomicclock-ntp-time/id1402993049

Website:

https://atomicclock.app/

User Reviews

Users value AtomicClock for precise NTP time and rich customization, with strong daily usefulness for calibrating watches. The main drawback across reviews is intrusive advertising: banner and full-page ads, trial versions, and aggressive ad tactics that can render the app unusable. A subset notes occasional issues with pro upgrades or payments. Overall sentiment centers on solid timekeeping and features marred by monetization-focused UX.

Pros

Precise timekeeping with NTP and support for multiple time servers, delivering very high accuracy (even to 1/100 second).
Rich, customizable clock designs and display options that users find appealing and versatile.
Very useful for calibrating and setting watches/clocks on a daily basis, including astronomical timing use.
One-time, non-subscription purchase for pro features (deemed good value by users).

Cons

Intrusive advertising: banners and full-page ads that cover the clock and degrade readability.
Trial/free versions that are unusable due to ads; ads interrupt core functionality before purchase.
Aggressive ad tactics, including misleading prompts or pushes to click ads and update prompts.
Some users report instability upgrading to pro or paying through certain accounts; ad-driven monetization as the main friction.