# TrueNTP

> Measures phone clock accuracy against true time using multiple server queries. (iPhone/iPad app by Brett Herman.)

- Source: https://appshunter.io/ios/app/truentp/id6802821957 (this page in markdown: same URL + `.md`)
- Developer: [Brett Herman](https://appshunter.io/developer/6802821959)
- Category: Utilities
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 33 MB
- Languages: American English
- Released: 2026-09-04
- Data updated: 2026-10-06
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/truentp/id6802821957/reviews.md

## What is TrueNTP?

TrueNTP measures how far your phone's clock is from true time.

It queries multiple independent time servers, cross-checks their answers, and computes a corrected time with millisecond precision. You see the corrected time, your device clock's drift, and an uncertainty figure so you know how much to trust the number.

WHO IT'S FOR
Network admins verifying NTP infrastructure. Cell techs checking tower timing. Sysadmins chasing certificate and Kerberos clock-skew errors. IT teams resyncing air-gapped and offline systems: hold the phone next to the console and set the clock from a known-good reference. And anyone curious what time it actually is.

HOW IT MEASURES
• Bursts of SNTP samples to every active server, weighted by network quality (1/RTT)
• Per-server offset, round-trip time, and stratum at a glance
• Optional outlier rejection against the cross-server median
• Six curated presets (Apple, Cloudflare, NIST, Google, Microsoft, Amazon). Enable any of them or add your own
• An uncertainty readout alongside every measurement

WHAT YOU SEE
• A large clock showing corrected time, ticking smoothly, unaffected by OS clock changes
• Device clock card: your clock's drift, labeled plainly as DEVICE AHEAD, DEVICE BEHIND, or IN SYNC
• Server list with per-server detail sheets: refid, root delay, root dispersion, per-sample scatter
• 30-minute offset timeline showing your clock's behavior

PRIVACY
No accounts, no analytics, no tracking. Settings and history stay on your device. The privacy policy is one page.

A short, plain-language NTP guide is included.

## Key features

- Precise time measurement
- Cross-checks multiple time servers
- Displays device clock drift
- Shows measurement uncertainty
- Customizable server presets
- Offset timeline visualization

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro Unlock | $3.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/truentp/id6802821957/reviews.md

### 5/5 — Well developed … easy to use … fills gap in my tool belt

*2026-09-08*

This APP is thoughtful in design filling a gap in my technology tool belt

## Frequently asked questions about TrueNTP

### What is TrueNTP?

TrueNTP measures how far your phone's clock is from true time. It queries multiple independent time servers, cross-checks their answers, and computes a corrected time with millisecond precision.

### Who is TrueNTP for?

TrueNTP is for network admins verifying NTP infrastructure, cell techs checking tower timing, sysadmins chasing clock-skew errors, IT teams resyncing systems, and anyone curious about the actual time.

### How does TrueNTP measure time?

It uses bursts of SNTP samples to active servers, weighted by network quality. It includes optional outlier rejection against the cross-server median and offers six curated server presets.

### What information does TrueNTP show?

It displays a large clock showing corrected time, your device clock's drift (ahead, behind, or in sync), and detailed server information including refid, root delay, and dispersion.

### Does TrueNTP have ads?

Yes, TrueNTP contains advertisements. It is available for free but includes ads as part of its monetization model.

### Is TrueNTP available on Android?

Based on the provided data, TrueNTP is supported on iPhone and iPad. Information regarding Android availability is not specified.

### How often is TrueNTP updated?

The latest version is 1.0, and it was last updated on September 4, 2026. This indicates a recent release, with future update frequency yet to be determined.

### What is the privacy policy for TrueNTP?

TrueNTP has a one-page privacy policy with no accounts, analytics, or tracking. All settings and history remain on your device.

## Version history (last 1 release)

### 1.0 — 2026-09-04

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-06.*