ISC DNS Checker vs DNSwitch
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)
DNSwitch
Easily change your device's DNS settings with a single tap. Supports custom DNS configurations including DoH and DoT. A Pro version unlocks advanced features like speed testing and removes ads.
- One-tap DNS switching
- Custom DNS support (DoH, DoT)
- Add, edit, and delete custom DNS
- DNS Speed Test (Pro)
- Ad-free experience (Pro)
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Key Features • One-tap DNS switching • Custom DNS: Add, edit, delete. Supports DoH, DoT, and DNS • DNS Speed Test (Pro): Shows average, minimum, and maximum latency • DNSwitch Pro: Unlock speed test and ad-free Disclaimer This app is not affiliated with any DNS providers. All services are provided by third parties. Please follow their terms and privacy policies.
Screenshots
Verdict
The clearest difference is rating: DNSwitch at 5.0 against ISC DNS Checker's 3.0. DNSwitch also leads on update cadence (weekly vs every 15 months). ISC DNS Checker's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, ratings volume and device support 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. DNSwitch sells 1 one-off in-app purchase. ISC DNS Checker asks for nothing beyond the download.
DNSwitch holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
ISC DNS Checker ships an update every 15 months, DNSwitch weekly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.
| Parameter | ISC DNS Checker | DNSwitch |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 15 months | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 9.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 19 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Internet Systems Consortium, Inc. | LEE HAN HSIANG |
In-app purchases
ISC DNS Checker
No in-app purchases
DNSwitch
- dnswitch pro$0.99
