# NSLookup vs ClickDFU

The clearest difference is in-app purchases: ClickDFU at none against NSLookup's 1. ClickDFU also leads on ads (none vs shown) and update cadence (every 2 months vs every 9 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. NSLookup sells 1 one-off in-app purchase. ClickDFU asks for nothing beyond the download.

NSLookup ships an update every 9 months, ClickDFU every 2 months. The most recent releases landed on September 21, 2026 and December 27, 2025 respectively.

## The numbers

| Metric | NSLookup | ClickDFU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (31 ratings)](https://appshunter.io/ios/app/nslookup/id423175511/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | 54.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 30 MB | 23 MB |
| Requires iOS | 13.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dayana Networks Ltd](https://appshunter.io/developer/403434357) | [Shenzhen Lanke Xuntong Technology Co., Ltd.](https://appshunter.io/developer/640898259) |

## What reviewers say

### NSLookup

[App page](https://appshunter.io/ios/app/nslookup/id423175511)

This utility app retrieves detailed DNS information for any domain. It helps users find IP addresses, view name servers, and query specific DNS records like NS and CNAME. It can also force authoritative responses from main DNS servers.

**Highlights:** View domain DNS information, Find target IP address, See name server records, Query NS and CNAME records, Force authoritative responses

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NSLookup Pro | $1.99 | one-time |


### ClickDFU

[App page](https://appshunter.io/ios/app/clickdfu/id1661913768)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NSLookup free?

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

### Is ClickDFU free?

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

### Do NSLookup or ClickDFU have ads?

NSLookup shows ads; ClickDFU does not.

### Which is updated more often, NSLookup or ClickDFU?

NSLookup ships an update every 9 months, and ClickDFU every 2 months. Most recently, NSLookup was updated on September 21, 2026 and ClickDFU on December 27, 2025.

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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.*