247+ iOS apps curated and reviewed
Every iPhone needs a few good atomic clock signal apps. We benchmark 247+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.5โ (1K) | Yes | Yes | Aug 2026 |
| 2 |  | $1.99 | 4.7โ (248) | No | No | Aug 2026 |
| 3 |  | Free | 4.7โ (10K) | Yes | Yes | Aug 2026 |
| 4 |  | Free | 4.8โ (5.5K) | Yes | Yes | Aug 2026 |
| 5 |  | $1.99 | 4.8โ (4.9K) | No | Yes | Aug 2026 |
| 6 |  | Free | โ | No | No | May 2026 |
| 7 |  | $2.99 | โ | No | No | Jun 2026 |
| 8 |  | $2.99 | โ | No | No | Aug 2026 |
This app helps synchronize radio-controlled watches by simulating time signal waves. It supports various international time signal standards and offers a 'Beast Mode' for faster synchronization. Simply place your watch near your device's speaker and start the process.
Calibrate your radio-controlled watch or clock using your iPhone or iPad. Simply tap 'Transmit' and place your device near your watch to automatically sync the accurate time.
Get the most accurate time from an official atomic clock server. This app automatically detects your time zone and allows custom backgrounds. Easily switch between digital and analog clock displays with a swipe.
This app displays the exact current time synchronized with NTP servers, offering a customizable clock view for precise time checks. It's ideal for setting watches, verifying timestamps, or comparing local and network time.
This app provides ultra-precise time by syncing with atomic time servers. It features a customizable display mimicking professional studio clocks, with advanced alarm functions and various visual themes. Designed for accuracy and usability, it's ideal for professionals and enthusiasts alike.
A highly accurate and customizable digital clock that fills your screen. Offers adjustable colors, sizes, and 12/24 hour formats. Designed for minimal battery usage.
This utility provides highly accurate time synchronization using NTP, displaying precise time with millisecond detail. It allows comparison with network time, shows sync offset and latency, and offers various clock styles with customization options. It's designed for users needing a reliable, precise reference clock.
Explore the time and positions of celestial bodies across our solar system. View analog and digital clocks for planets, dwarf planets, and moons, with interactive maps and customizable widgets. Understand planetary seasons and translate times between objects.
Displays the current time using the binary numeral system. Offers customizable display options including 24/12 hour formats and AM/PM indicators. This widget is designed for users interested in a unique, code-inspired timekeeping experience.
This app displays the time with a minimalistic design, utilizing the full screen. It offers extensive customization for time format, including 12/24 hour, leading zeros, and seconds precision. Screen brightness can be adjusted by swiping, and screen dimming can be prevented.
This application offers a straightforward alarm clock experience with atomic clock synchronization. It prioritizes ease of use, presenting a simple interface for setting and managing alarms without unnecessary complexity.
This utility app provides a customizable digital clock with adjustable colors and sizes, and an analog dial option for iPad users. It also offers accurate time synchronization via NTP servers.
