# NTP Inspector — Your NTP debugging tool

> NTP server querying and debugging tool for network administrators and developers. (iPhone/iPad app by Antonios Chariton.)

- Source: https://appshunter.io/ios/app/ntp-inspector/id6757625801 (this page in markdown: same URL + `.md`)
- Developer: [Antonios Chariton](https://appshunter.io/developer/1867948901)
- Category: Utilities, Developer Tools
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 3 MB
- Languages: English
- Released: 2026-01-13
- Data updated: 2026-07-16
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/ntp-inspector/id6757625801/reviews.md

## What is NTP Inspector?

NTP Inspector is an application that allows you to check servers running the NTP protocol over the Internet and report some basic information.

It sends an NTP packet from your device to the server and reports backs almost everything included in the response, like the protocol version, mode, the server Stratum, its precision, reference time, as well as whether there is a leap second today or not.

With this app you can troubleshoot NTP servers from anywhere, as seen from your device, and not a remote server, with complete privacy. The app was created when I received an alert for one of my NTP pool servers while outside and without laptop access, with no other option to query it to see what's wrong.

## Key features

- Query NTP servers
- View protocol version
- Check server stratum
- Report reference time
- Detect leap seconds
- Troubleshoot network issues

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/ntp-inspector/id6757625801/reviews.md

### 5/5 — It works!

*2026-03-18*

I had been looking for an app to verify the responses of my NTP servers. This app is fast, simple and seems to reliably work. Any chance for future NTS support? ;)

## Frequently asked questions about NTP Inspector

### What information does NTP Inspector provide about NTP servers?

NTP Inspector reports detailed information from NTP server responses, including protocol version, mode, server stratum, precision, reference time, and whether a leap second is present.

### How does NTP Inspector help with troubleshooting?

It allows you to query NTP servers directly from your device, providing a unique perspective for troubleshooting issues without needing laptop access. This helps identify problems as seen from your specific location.

### Is NTP Inspector free to use?

Yes, NTP Inspector is completely free to download and use. There are no in-app purchases or advertisements.

### What devices is NTP Inspector compatible with?

NTP Inspector is available for iPhone and iPad devices.

### How often is NTP Inspector updated?

The app was last updated on March 18, 2026, with version 0.4. This indicates active development and potential for future improvements.

### What is the age rating for NTP Inspector?

NTP Inspector has an age rating of 4+, making it suitable for a wide range of users.

### Does NTP Inspector offer privacy when checking servers?

Yes, the app is designed for complete privacy, as it queries servers directly from your device and does not rely on external services for its checks.

## Version history (last 5 releases)

### 0.5 — 2026-07-10

- Show the timestamp of the NTP packet transmission and receipt
- Show the raw (hex) Reference ID instead of just the IPv4 Hint

### 0.4 — 2026-03-18

- Improvements in memory management
- More security features have been enabled for iPhone Air and iPhone 17 devices

### 0.3.4 — 2026-01-15

This release contains significant proactive application security improvements for devices with Apple's A19 series of chips like the iPhone 17 Pro. It utilizes the new capabilities of Apple Silicon to protect user devices better than ever before.

### 0.3.3 — 2026-01-14

v0.3 comes with extended timestamp support (Reference, Server Receive and Transmit timestamps)

### 0.2.10 — 2026-01-13

No release notes.

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| --- | --- | --- | --- |
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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 2026-07-16.*