Comparison

NRG Optimizer vs Atomic Clock

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

Head to head
About

NRG Optimizer

Features
Read full description

NRG Optimizer is a commercial application designed for Operations professionals looking to improve energy savings through smart control of smart devices like LED lighting, occupancy sensors, daylight sensors, electrical outlets and lighting controls.

About

Atomic Clock

Features
Read full description

Always know the exact time with Atomic Clock – Precise Time. Our app synchronizes with official atomic time servers to deliver ultra-accurate time down to the millisecond. Whether you’re coordinating across time zones, managing scientific experiments, or simply want the most reliable clock, this app provides unmatched precision. Features: - Real-time synchronization with global atomic clock servers - 24-hour and 12-hour display options - Beautiful, minimal clock face with dark mode - Works online and offline with last known atomic time - Perfect for professionals, travelers, pilots, scientists, and anyone who values absolute accuracy. An atomic clock is a timekeeping device that measures time based on the vibrations or transitions of atomsβ€”usually cesium or rubidium. Unlike mechanical or quartz clocks, which rely on moving parts or crystals, atomic clocks use the natural oscillations of atoms as their frequency standard. This makes them the most accurate clocks ever developed, capable of maintaining time to within a few billionths of a second per day. Atomic clocks are essential for applications where extreme precision is required, such as GPS navigation, telecommunications, space exploration, scientific experiments, and synchronizing global networks.

Screenshots

NRG Optimizer4 screens
Atomic Clock3 screens

Verdict

The call

The clearest difference is iOS requirement: NRG Optimizer at 12.0 against Atomic Clock's 15.1. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference Β· 5 level
NRG Optimizer versus Atomic Clock: the parameters behind the verdict, then further details
ParameterNRG OptimizerAtomic Clock
PriceFreeFree
Update frequencyEvery 13 monthsβ€”
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.0 β€” better15.1
Further details β€” not scored
Size154 MB29 MB
Age rating4+4+
DeveloperT.G.L. Inc.STAN I. C. ALEXANDRU PERSOANA FIZICA AUTORIZATA

In-app purchases

None

NRG Optimizer

No in-app purchases

None

Atomic Clock

No in-app purchases

Questions

Is NRG Optimizer free?
NRG Optimizer is free to download, with no in-app purchases.
Is Atomic Clock free?
Atomic Clock is free to download, with no in-app purchases.
Do NRG Optimizer or Atomic Clock have ads?
Neither NRG Optimizer nor Atomic Clock shows ads.

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