# NTP Inspector vs TrueNTP

The clearest difference is in-app purchases: NTP Inspector at none against TrueNTP's 1. NTP Inspector also leads on ads (none vs shown). TrueNTP's advantage is iOS requirement (15.0 vs 18.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. TrueNTP sells 1 one-off in-app purchase. NTP Inspector asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for NTP Inspector against 5.0 for TrueNTP. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

NTP Inspector ships an update monthly, TrueNTP every 2 months. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | NTP Inspector | TrueNTP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/ntp-inspector/id6757625801/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/truentp/id6802821957/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 32 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Antonios Chariton](https://appshunter.io/developer/1867948901) | [Brett Herman](https://appshunter.io/developer/6802821959) |

## What reviewers say

### NTP Inspector

[App page](https://appshunter.io/ios/app/ntp-inspector/id6757625801)

This utility app allows you to query NTP servers on the internet and view detailed information from their responses. It helps troubleshoot server issues by providing protocol version, stratum, reference time, and leap second status directly from your device.

**Highlights:** Query NTP servers, View protocol version, Check server stratum, Report reference time, Detect leap seconds, Troubleshoot network issues

**Features:** macOS Compatibility

**In-app purchases:** none


### TrueNTP

[App page](https://appshunter.io/ios/app/truentp/id6802821957)

This app precisely measures your phone's clock against true time by querying multiple servers and calculating a corrected time with millisecond accuracy. It displays the corrected time, your device's drift, and an uncertainty figure, making it useful for network verification and anyone needing accurate time.

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

**Features:** macOS Compatibility, Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (1)**

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


## Frequently asked questions

### Is NTP Inspector free?

NTP Inspector is free to download, with no in-app purchases.

### Is TrueNTP free?

TrueNTP is free to download, with in-app purchases available.

### Which has better reviews, NTP Inspector or TrueNTP?

NTP Inspector and TrueNTP are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do NTP Inspector or TrueNTP have ads?

TrueNTP shows ads; NTP Inspector does not.

### Which is updated more often, NTP Inspector or TrueNTP?

NTP Inspector ships an update monthly, and TrueNTP every 2 months. Most recently, NTP Inspector was updated on November 5, 2026 and TrueNTP on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*