# ISC DNS Checker vs Best NetTools

The clearest difference is rating: Best NetTools at 3.5 against ISC DNS Checker's 3.0. Best NetTools also leads on review sentiment (33% vs 0%) and update cadence (every 2 months vs every 15 months). ISC DNS Checker's advantage is iOS requirement (9.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Best NetTools holds the better App Store score, 3.5 against 3.0. That said, the two scores are not equally well evidenced: Best NetTools has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of ISC DNS Checker's written reviews are positive against 33% of Best NetTools's.

ISC DNS Checker ships an update every 15 months, Best NetTools every 2 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | ISC DNS Checker | Best NetTools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/isc-dns-checker/id1141834002/reviews) | **[3.5 (6 ratings)](https://appshunter.io/ios/app/best-nettools/id1370798520/reviews)** |
| Number of ratings | 1 | **6** |
| Positive reviews | 0.0% of reviews | **33.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 19 MB | 9 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Internet Systems Consortium, Inc.](https://appshunter.io/developer/1115648879) | [Beijing Tiantexin Technology Co., Ltd.](https://appshunter.io/developer/1370281804) |

## What reviewers say

### ISC DNS Checker

[App page](https://appshunter.io/ios/app/isc-dns-checker/id1141834002)

This application tests recursive DNS servers for compliance with current DNS protocol specifications, particularly EDNS(0). It can automatically detect your device's DNS servers or allow manual IP address input for testing. Both IPv4 and IPv6 are supported.

**Highlights:** Tests DNSSEC compliance, Tests EDNS(0) conformance, Automatic DNS server detection, Manual IP address input, IPv4 and IPv6 support

**Features:** macOS Compatibility

**In-app purchases:** none


### Best NetTools

[App page](https://appshunter.io/ios/app/best-nettools/id1370798520)

This utility app provides a suite of network tools for information searching, traceroute, ping, WHOIS, and DNS lookups. It's designed for network operators, website owners, and programmers seeking a fast and convenient assistant.

**Highlights:** Network information searching, Traceroute, Ping, WHOIS lookup, DNS dig

**In-app purchases:** none


## Frequently asked questions

### Is ISC DNS Checker free?

ISC DNS Checker is free to download, with no in-app purchases.

### Is Best NetTools free?

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

### Which has better reviews, ISC DNS Checker or Best NetTools?

Best NetTools is rated higher. ISC DNS Checker averages 3.0 out of 5 from 1 ratings, while Best NetTools averages 3.5 from 6 ratings.

### Do ISC DNS Checker or Best NetTools have ads?

Neither ISC DNS Checker nor Best NetTools shows ads.

### Which is updated more often, ISC DNS Checker or Best NetTools?

ISC DNS Checker ships an update every 15 months, and Best NetTools every 2 months. Most recently, ISC DNS Checker was updated on November 2, 2026 and Best NetTools on November 2, 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.*