Comparison

Atomic Clock PRO vs SAL SPU

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

SAL SPU

Features
Read full description

The SAL SPU-200 App connects over Wi-Fi to SPU-200 navigation units. It listens for NMEA strings broadcast via UDP, decodes them, and displays real-time data for on-site analysis and maintenance. INSTALLATION VERIFICATION Confirm correct alignment and configuration in seconds. SENSOR DIAGNOSTICS Monitor every connected sensor live; detect faults instantly. LIVE DATA FEEDBACK View position, speed, heading, depth, and more through clear visuals. SECURITY MONITORING Detect jamming and spoofing attempts to keep navigation safe. Enhanced maritime-grade security with SPU-200 architecture Unifies setup checks, diagnostics, and data analysis in a single interface Designed for field operators and service technicians COMPATIBLE MODELS SAL Navigation SPU-200 REQUIREMENTS Wi-Fi permission to receive UDP broadcasts from an SPU-200 device Device must be on the same local network as the SPU unit PRIVACY & SECURITY The app collects no personal data; all traffic stays within your local network. For more information, visit: www.salnavigation.com

Screenshots

Atomic Clock PRO4 screens
SAL SPU4 screens

Verdict

The call

The clearest difference is in-app purchases: SAL SPU at none against Atomic Clock PRO's 2. SAL SPU also leads on ads (none vs shown). 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. SAL SPU asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Atomic Clock PRO versus SAL SPU: the parameters behind the verdict, then further details
ParameterAtomic Clock PROSAL SPU
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, iPodiPhone, iPad, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size6 MB18 MB
Age rating4+4+
DeveloperBrachmann Online Marketing GmbH & Co. KGSmart Marine Technologies

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

SAL SPU

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

SAL SPU

No in-app purchases

Questions

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

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