ISC DNS Checker vs Best NetTools
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ISC DNS Checker
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.
- Tests DNSSEC compliance
- Tests EDNS(0) conformance
- Automatic DNS server detection
- Manual IP address input
- IPv4 and IPv6 support
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Deployment of important new DNS features such as DNSSEC relies on end users having access to DNS resolvers which behave correctly per the specifications. This app, from ISC Research, tests recursive DNS servers for conformance against current DNS protocol specifications, especially with regard to EDNS(0) as specified in RFC 6891. The app can automatically detect the DNS servers automatically discovered by your iOS device, or you can enter IP addresses to be tested manually. Both IPv4 and IPv6 are supported. Please send comments and questions to bind-users@lists.isc.org (email list subscription required)
Best NetTools
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.
- Network information searching
- Traceroute
- Ping
- WHOIS lookup
- DNS dig
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Best NetTools is a toolkit that have many network utilities. Includes network information searching, traceroute, ping, whois, dig and other services. It is the popular used toolkit for network operators, websit owners, programmers and so on. It's a fast, simple, convenient assistant. Free users have a limit number of queries, please contact us for commercial license.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | ISC DNS Checker | Best NetTools |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) | 3.5 (6 ratings) — better |
| Positive reviews | 0.0% of reviews | 33.3% of reviews — better |
| Number of ratings | 1 | 6 — better |
| Update frequency | Every 15 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 19 MB | 9 MB |
| Age rating | 4+ | 12+ |
| Developer | Internet Systems Consortium, Inc. | Beijing Tiantexin Technology Co., Ltd. |
Customer experience
ISC DNS Checker
Best NetTools
In-app purchases
ISC DNS Checker
No in-app purchases
Best NetTools
No in-app purchases
Questions
Is ISC DNS Checker free?
Is Best NetTools free?
Which has better reviews, ISC DNS Checker or Best NetTools?
Do ISC DNS Checker or Best NetTools have ads?
Which is updated more often, ISC DNS Checker or Best NetTools?
Other comparisons
