Comparison

Atomic Clock PRO vs portier KeyOnTheGo

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

portier KeyOnTheGo

Features
Read full description

KeyOnTheGo is your all-in-one mobile app designed to streamline the process of signing key orders and managing document workflows with ease and efficiency. Whether you're in the office or on the go, KeyOnTheGo ensures that you can securely sign documents, even without an internet connection. Barcode Scanning: Simplify the process of verifying and managing key orders by scanning barcodes directly within the app. History Request Tracking: Access and review your previous key orders and signatures effortlessly through an organized history feature.

Screenshots

Atomic Clock PRO4 screens
portier KeyOnTheGo4 screens

Verdict

The call

The clearest difference is in-app purchases: portier KeyOnTheGo at none against Atomic Clock PRO's 2. portier KeyOnTheGo also leads on ads (none vs shown). Atomic Clock PRO's advantage is update cadence (every 3 months vs every 13 months). On price, device support and iOS requirement 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. portier KeyOnTheGo asks for nothing beyond the download.

UpkeepUpdate frequency

Atomic Clock PRO ships an update every 3 months, portier KeyOnTheGo every 13 months. The most recent releases landed on September 23, 2026 and May 18, 2026 respectively.

Scorecard3 real differences · 7 level
Atomic Clock PRO versus portier KeyOnTheGo: the parameters behind the verdict, then further details
ParameterAtomic Clock PROportier KeyOnTheGo
PriceFreeFree
Rating4.7 (10K ratings) — better—
Positive reviews72.7% of reviews—
Number of ratings10K — better—
Update frequencyEvery 3 months — betterEvery 13 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size6 MB42 MB
Age rating4+4+
DeveloperBrachmann Online Marketing GmbH & Co. KGportier Global Pty Ltd

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

portier KeyOnTheGo

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

portier KeyOnTheGo

No in-app purchases

Questions

Is Atomic Clock PRO free?
Atomic Clock PRO is free to download, with in-app purchases available.
Is portier KeyOnTheGo free?
portier KeyOnTheGo is free to download, with no in-app purchases.
Do Atomic Clock PRO or portier KeyOnTheGo have ads?
Atomic Clock PRO shows ads; portier KeyOnTheGo does not.
Which is updated more often, Atomic Clock PRO or portier KeyOnTheGo?
Atomic Clock PRO ships an update every 3 months, and portier KeyOnTheGo every 13 months. Most recently, Atomic Clock PRO was updated on September 23, 2026 and portier KeyOnTheGo on May 18, 2026.

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