Comparison

Atomic Clock PRO vs Good Time

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

This app provides highly accurate time by syncing with official atomic clock servers. Customize your display with digital or analog views, personal backgrounds, and adjustable sizes. It's perfect for precise timekeeping, travel, or as a personalized desk clock.

Highlights
  • Atomic clock time synchronization
  • Digital and analog display options
  • Customizable backgrounds
  • Adjustable clock size
  • Automatic time zone recognition
  • Screen always on option
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

Good Time

Precisely set your mechanical watch to the exact second using an analog dial with a sub-second-accurate sweep hand. Features include a stopwatch controllable by volume buttons, world time for over 2,000 cities, and multiple dial designs. It operates entirely on-device with no ads or tracking.

Highlights
  • Sub-second accurate sweep hand
  • Volume button stopwatch control
  • World time with GMT offset
  • Multiple dial designs
  • On-device operation
Features
Read full description

I made Good Time because I wanted a clock that actually helps you set a mechanical watch — one where you can see exactly when the second hand hits 12, down to a fraction of a second. • DIALS: Swipe through a variety of dials — field, dive, dress, chronograph, moonphase, etc. Light and dark versions. • CHRONOGRAPH: There's a stopwatch built in. You can run it with your volume buttons — up starts/pauses, down resets. • WORLD TIME: Search for a city and see what time it is there • 100% FREE: No in-app purchases, no subscriptions, no ads, and I'm not planning to add any. I'm not trying to make money off this — I just wanted it to exist. Made for the Grey Nato crew. If you have a request for new dials, let me know in a review.

Screenshots

Atomic Clock PRO4 screens
Good Time4 screens

Verdict

The call

The clearest difference is in-app purchases: Good Time at none against Atomic Clock PRO's 2. Good Time also leads on ads (none vs shown) and update cadence (every 3 days vs every 4 months). Atomic Clock PRO's advantage is ratings volume (10K vs 12) and device support (3 vs 1). 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. Good Time asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Good Time holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Atomic Clock PRO has 10K ratings behind it against 12, so its average is the more settled of the two.

UpkeepUpdate frequency

Atomic Clock PRO ships an update every 4 months, Good Time every 3 days. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.

Scorecard8 real differences · 2 level
Atomic Clock PRO versus Good Time: the parameters behind the verdict, then further details
ParameterAtomic Clock PROGood Time
PriceFreeFree
Rating4.7 (10K ratings)5.0 (12 ratings) — better
Positive reviews72.9% of reviews—
Number of ratings10K — better12
Update frequencyEvery 4 monthsEvery 3 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better18.5
Further details — not scored
Size6 MB9 MB
Age rating4+4+
DeveloperBrachmann Online Marketing GmbH & Co. KGJonathan Cho

Customer experience

Atomic Clock PRO

All ratings10,230 ratings
Positive92.3%
Neutral3.5%
Negative4.2%
Written reviews425 reviews
Positive72.9%
Neutral5.9%
Negative21.2%

Good Time

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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

Good Time

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

Good Time

No in-app purchases

Questions

Is Atomic Clock PRO free?
Atomic Clock PRO is free to download, with in-app purchases available.
Is Good Time free?
Good Time is free to download, with no in-app purchases.
Which has better reviews, Atomic Clock PRO or Good Time?
Good Time is rated higher. Atomic Clock PRO averages 4.7 out of 5 from 10K ratings, while Good Time averages 5.0 from 12 ratings.
Do Atomic Clock PRO or Good Time have ads?
Atomic Clock PRO shows ads; Good Time does not.
Which is updated more often, Atomic Clock PRO or Good Time?
Atomic Clock PRO ships an update every 4 months, and Good Time every 3 days. Most recently, Atomic Clock PRO was updated on November 11, 2026 and Good Time on November 5, 2026.

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