Atomic Clock PRO vs Simple_Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Exact time from atomic clock
- Automatic time zone recognition
- Customizable background images
- Digital and analog clock modes
- Optional sound alerts
- Color customization
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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/
Simple_Clock
A minimalist analog clock designed with a classic Apple iPad aesthetic. It offers the unique ability to integrate calendar events and reminders as clock hands for enhanced time management.
- Classic Apple iPad style analog clock
- Optional calendar integration as clock needles
- Optional reminders integration as clock needles
- Minimalist design
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Classic Apple iPad style clock. Feature • Add Calendar and Reminders as clock needles (optional) Support: vibecoder.company@gmail.com
Screenshots
Verdict
The clearest difference is update cadence: Simple_Clock at every 5 days against Atomic Clock PRO's every 3 months. Atomic Clock PRO's advantage is ratings volume (10K vs 127) and iOS requirement (15.6 vs 17.0). On price, rating, review sentiment and ads 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
Both are free to download. Atomic Clock PRO sells 2 in-app purchases, starting at $1.99 per month and Simple_Clock sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.7 for Atomic Clock PRO against 4.7 for Simple_Clock. That said, the two scores are not equally well evidenced: Atomic Clock PRO has 10K ratings behind it against 127, so its average is the more settled of the two. Written reviews are what separate them: 73% of Atomic Clock PRO's written reviews are positive against 71% of Simple_Clock's.
Atomic Clock PRO ships an update every 3 months, Simple_Clock every 5 days. Both last shipped on September 23, 2026.
| Parameter | Atomic Clock PRO | Simple_Clock |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (10K ratings) | 4.7 (127 ratings) |
| Positive reviews | 72.7% of reviews — better | 70.6% of reviews |
| Number of ratings | 10K — better | 127 |
| Update frequency | Every 3 months | Every 5 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Brachmann Online Marketing GmbH & Co. KG | Seung-Un Ham |
Customer experience
Atomic Clock PRO
Simple_Clock
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
Simple_Clock
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Atomic Clock PRO
- Premium$1.991 Month
- Remove Ads$5.99
Simple_Clock
- Remove Ads (Lifetime)$2.99
Questions
Is Atomic Clock PRO free?
Is Simple_Clock free?
Which has better reviews, Atomic Clock PRO or Simple_Clock?
Do Atomic Clock PRO or Simple_Clock have ads?
Which is updated more often, Atomic Clock PRO or Simple_Clock?
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