Time Offset Assistant vs TrueOffset
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Time Offset Assistant
This utility helps law enforcement calculate and track time discrepancies on surveillance systems. It allows users to record events, compare real-time with device time, and generate summary reports for easy sharing.
- Calculate time difference
- Track real-time vs. device time
- Generate RTF/PDF summaries
- Email reports
- Save incident data
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Time Offset Assistant is a simple tool designed to assist law enforcement personnel with calculating and keeping track of time discrepancies on surveillance systems. Features: *Calculate the time difference between the current and device's time *Keep track of events that occurred in real time and the device's time *Create a summary of the data saved in an RTF or PDF format and email it to yourself or colleagues. *Save each incident and its events for later reference
TrueOffset
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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 measurement—focused on accuracy, not decoration. FOUR CLOCK FACES - 12-Hour Classic — Traditional analog display - 24-Hour Scientific — Full day on one dial - NTP Offset — Dual second hands show device vs. true time - Digital — 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 UTC—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 ±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 — Sparkline overview of all servers - Offset History — Track drift over time - Histogram — Offset distribution analysis - Box Plot — Compare consistency across servers - RTT Scatter — Correlate latency with offset - Clock Sources — Decode reference clocks (GPS, PPS, Rubidium, Cesium) - Dual-Stack — IPv4 vs IPv6 path comparison - Rankings — Servers scored by jitter and round-trip time TrueOffset is designed for users who care about how accurate their time really is—and want to see the difference, not just trust it. --- In appreciation of Emerald Sequoia's Emerald Time.
Screenshots
Verdict
The clearest difference is in-app purchases: TrueOffset at none against Time Offset Assistant's 1. TrueOffset also leads on update cadence (every 3 weeks vs every 13 months). Time Offset Assistant's advantage is iOS requirement (14.7 vs 17.6). On price, ads and device support 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. Time Offset Assistant sells 1 one-off in-app purchase. TrueOffset asks for nothing beyond the download.
Time Offset Assistant ships an update every 13 months, TrueOffset every 3 weeks. The most recent releases landed on September 28, 2026 and October 7, 2026 respectively.
| Parameter | Time Offset Assistant | TrueOffset |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 13 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple TV |
| Requires iOS | 14.7 — better | 17.6 |
| Further details — not scored | ||
| Size | 20 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Calvin You | Richard Bollar |
In-app purchases
Time Offset Assistant
- Remove Ads$0.99
TrueOffset
No in-app purchases
Questions
Is Time Offset Assistant free?
Is TrueOffset free?
Do Time Offset Assistant or TrueOffset have ads?
Which is updated more often, Time Offset Assistant or TrueOffset?
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