Comparison

Atomic Clock PRO vs Time Zone Slider

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Atomic Clock PRO

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.

Highlights
  • Exact time from atomic clock
  • Automatic time zone recognition
  • Customizable background images
  • Digital and analog clock modes
  • Optional sound alerts
  • Color customization
Features
Read full description

Get accurate time on your iPhone and iPad by syncing with an official atomic clock time server. Download now for free! If you want exact time, a precise time reference, or an easy-to-read clock display, this app is designed for that. It automatically recognizes your time zone, lets you use one of your own photos as the background, and lets you switch between a digital display and a classic analog clock with a simple swipe. It is ideal as a personalized desk clock, a reliable travel companion, an everyday reference clock, or when you need exact time to set a mechanical watch accurately. Overview: - Accurate and precise time synced from an official atomic clock time server - Automatically recognizes your time zone and shows the current local time - Choose digital, analog, or combined analog and digital clock displays - Swipe to switch between clock displays - Resize the digital clock for a larger or smaller display - Includes time (hours, minutes, and seconds), date, and day of the week (optional) - Optional sound every second or every minute - Change clock and background colors - Use your own photos as background images - Choose atomic clock sync or your device's system clock - Option to keep the screen awake while the app is open - Works in portrait and landscape mode - For iPhone and iPad Helpful for: - A personalized desk clock at home or at work - Getting the correct local time while traveling - Setting a mechanical watch accurately - A clear reference clock when you want accurate, easy-to-read time PLEASE NOTE: You can switch between the analog and digital clock by swiping left or right across the clock. Disclaimer: Please note that whilst all reasonable care has been taken to make this application as accurate as possible we can not guarantee 100% accuracy. Standard Apple Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Time Zone Slider

Features
Read full description

Time Zone Slider makes comparing time zones effortless. Add the cities you care about, then drag any city's 24-hour dial — every other city updates instantly, so you can see at a glance what 9 AM in London means in Tokyo, New York, or Sydney. Perfect for planning meetings with remote teams, calling family abroad, or scheduling anything across time zones. FEATURES • Draggable 24-hour dials — slide through the day and watch every city move in sync • Hundreds of cities to choose from, searchable by name • Daylight saving time handled automatically — offsets and GMT badges are always accurate • Your city list is saved between launches • Works fully offline — no account, no sign-up, no tracking • Clean, warm design that's easy on the eyes in light and dark mode Whether you work with a distributed team, have friends and family around the world, or just travel a lot, Time Zone Slider turns time zone math into a single swipe.

Screenshots

Atomic Clock PRO4 screens
Time Zone Slider3 screens

Verdict

The call

The clearest difference is in-app purchases: Time Zone Slider at none against Atomic Clock PRO's 2. Time Zone Slider also leads on ads (none vs shown). Atomic Clock PRO's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17). On price there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Atomic Clock PRO sells 2 in-app purchases, starting at $1.99 per month. Time Zone Slider asks for nothing beyond the download.

Scorecard4 real differences · 6 level
Atomic Clock PRO versus Time Zone Slider: the parameters behind the verdict, then further details
ParameterAtomic Clock PROTime Zone Slider
PriceFreeFree
Rating4.7 (10K ratings) — better—
Positive reviews73.0% of reviews—
Number of ratings10K — better—
Update frequencyEvery 3 months—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better17
Further details — not scored
Size6 MB0 MB
Age rating4+4+
DeveloperBrachmann Online Marketing GmbH & Co. KGDanil Khismatulin

Bugs and requests

Atomic Clock PRO

Reported bugs

3 issues
  • Second hand occasionally runs in reverse
  • Digital clock display cuts off on some devices
  • Inconsistent behavior when switching between clock types

Requested features

3 requests
  • Customizable clock face options
  • Ability to set widget on home screen
  • Sync with system clock to automatically update time

Time Zone Slider

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Atomic Clock PRO

Subscriptions1
  • Premium$1.991 Month
One-time1
  • Remove Ads$5.99
None

Time Zone Slider

No in-app purchases

Questions

Is Atomic Clock PRO free?
Atomic Clock PRO is free to download, with in-app purchases available.
Is Time Zone Slider free?
Time Zone Slider is free to download, with no in-app purchases.
Do Atomic Clock PRO or Time Zone Slider have ads?
Atomic Clock PRO shows ads; Time Zone Slider does not.

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