Comparison

TrueOffset vs Atomic Exact Time

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

Head to head
About

TrueOffset

Features
Read full description

TrueOffset is a precision time utility for comparing time sources and measuring clock offset with clarity and confidence. Compare multiple Network Time Protocol (NTP) servers, visualize the difference between them, and see how your device's clock aligns with selected references. A clean, instrument-style interface presents time as a measurementβ€”focused on accuracy, not decoration. FOUR CLOCK FACES - 12-Hour Classic β€” Traditional analog display - 24-Hour Scientific β€” Full day on one dial - NTP Offset β€” Dual second hands show device vs. true time - Digital β€” Large display with millisecond precision UTC & TAI TIME SCALES Display Coordinated Universal Time (UTC) and International Atomic Time (TAI) alongside your local time. UTC and TAI feature authentic deadbeat second hands that step crisply to each second, visually distinct from the smooth-sweep local time. TAI runs 37 leap seconds ahead of UTCβ€”see both atomic time scales at a glance. PRECISION VISUALIZATION The NTP Offset view displays two second hands: your device clock (gray) and true NTP time (green). The offset magnifier shows drift on a Β±10ms scale, so you can see sub-millisecond accuracy at a glance. DUAL-STACK COMPARISON A feature no other NTP app offers: compare IPv4 and IPv6 paths to the same server. Detect DNS misconfigurations, identify when address families route to different servers, and verify your network is delivering consistent time on both stacks. FLEXIBLE TIME SOURCES Compare against Apple, Google, Cloudflare, NIST, US Naval Observatory, global NTP pools, or add your own servers. Set any source as your reference and track offsets across all configured servers. QUALITY ANALYTICS Eight swipeable chart pages reveal the character of your time sources: - Dashboard β€” Sparkline overview of all servers - Offset History β€” Track drift over time - Histogram β€” Offset distribution analysis - Box Plot β€” Compare consistency across servers - RTT Scatter β€” Correlate latency with offset - Clock Sources β€” Decode reference clocks (GPS, PPS, Rubidium, Cesium) - Dual-Stack β€” IPv4 vs IPv6 path comparison - Rankings β€” Servers scored by jitter and round-trip time TrueOffset is designed for users who care about how accurate their time really isβ€”and want to see the difference, not just trust it. --- In appreciation of Emerald Sequoia's Emerald Time.

About

Atomic Exact Time

Features
Read full description

How many milliseconds is your device clock off? Atomic Exact Time compares your device with multiple internet time sources, accounts for network latency and outliers, then displays a calibrated live clock. Highlights: - Full-screen clock with milliseconds - Clear device-offset status - Offset, RTT, jitter, confidence and drift reports - Reference-time Precision Alarm - 24/25/30/50/60 fps timecode and markers - Widgets - Midnight, LED, Lab and Atomic themes - Synchronization history and CSV export - English and Turkish interface Built for broadcasters, event crews, athletes, labs, exams and anyone who needs to start on the exact second. Atomic Exact Time Pro unlocks automatic calibration, Precision Alarm, the full accuracy report, timecode, export, widget themes and every Pro appearance. Pro is offered as an auto-renewing monthly subscription with a 7-day free trial for eligible customers. The current localized price and billing period are shown by the App Store before confirmation. Payment is charged to your Apple ID account. Subscriptions renew unless canceled at least 24 hours before the end of the current period. Manage or cancel a subscription in your App Store account settings. No account. No ads. No sale of personal data. Privacy: https://atomicexactime.shortmoxagency.com.tr/en/privacy Terms: https://atomicexactime.shortmoxagency.com.tr/en/terms Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

TrueOffset4 screens
Atomic Exact Time4 screens

Verdict

The call

The clearest difference is in-app purchases: TrueOffset at none against Atomic Exact Time's 1. On price, ads, device support and iOS requirement 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. Atomic Exact Time sells 1 in-app purchase, starting at $2.99 per month. TrueOffset asks for nothing beyond the download.

Scorecard1 real difference Β· 5 level
TrueOffset versus Atomic Exact Time: the parameters behind the verdict, then further details
ParameterTrueOffsetAtomic Exact Time
PriceFreeFree
Update frequencyEvery 3 weeksβ€”
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad, Apple TViPhone, iPad, Mac
Requires iOS17.616.4 β€” better
Further details β€” not scored
Size2 MB50 MB
Age rating4+4+
DeveloperRichard Bollaryigit canpolat

In-app purchases

None

TrueOffset

No in-app purchases

1 purchases

Atomic Exact Time

Subscriptions1
  • Atomic Exact Time Pro7 Days trial$2.991 Month

Questions

Is TrueOffset free?
TrueOffset is free to download, with no in-app purchases.
Is Atomic Exact Time free?
Atomic Exact Time is free to download, with in-app purchases available.
Do TrueOffset or Atomic Exact Time have ads?
Neither TrueOffset nor Atomic Exact Time shows ads.

Other comparisons