ISC Dig vs DNS Mail Info
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ISC Dig
Perform DNS lookups on your iOS device. This utility allows you to enter a domain name and retrieve its DNS records, supporting many options from the command-line version.
- Perform DNS lookups
- Retrieve DNS records
- Supports command-line options
- iOS port of 'dig' command
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This is ISC's classic "dig" command for performing DNS lookups, ported to iOS. Just type in a domain name, and "dig" will lookup the DNS records for that domain. This version supports most of the options available in the BIND 9.14.2 command line version of "dig". Please send comments and questions to bind-users@lists.isc.org
DNS Mail Info
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This app is used to troubleshoot domain based email problems. It allows you to add any number of domains (limited by the hardware you are running it on) to test your DNS resolvers. Specifically, for BIMI, DMARC, NS, MX, SPF, and WhoIs records. The data is stored locally after a DNS refresh request has been performed. You can refresh one domain, or all of them at the same time. Once the domain data has been gathered, you can save a snapshot (or more). If a snapshot is different than the current information, the snapshot will highlight so you can review the changes. If you have a DMARC reporter configured, quick reports can also be made. Currently supported DMARC providers are Postmarkapp.com and Demarkreport.com. With access to other DMARC reporter's API, I can add others. Features: - Look up domain records using the default name servers, or from a list of public nameservers. - Domains can have a spefified default name server. - Domain look ups can be saved, and are tested for differences with last domain refresh - WhoIs information is also saved and is tested for differences domain refresh. - Many on-line DNS tools are simple click from within the app. - DNS records collected are: BIMI, DMARC, NS, MX, and SPF. - Whois record is collected - A set of example domains can be added as a quick start. - Mail can be sent to the domain MailTo using the host mail client - Refresh a single domain's DNS records or all of your configured domain's DNS records Roadmap: - Domain PDF reports can be email'ed or printed - Mail can be sent to a specific MX server.
Screenshots
Verdict
The clearest difference is update cadence: DNS Mail Info at every 2 days against ISC Dig's every 10 months. ISC Dig's advantage is iOS requirement (9.0 vs 18.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
ISC Dig ships an update every 10 months, DNS Mail Info every 2 days. The most recent releases landed on October 10, 2026 and October 2, 2026 respectively.
| Parameter | ISC Dig | DNS Mail Info |
|---|---|---|
| Price | Free | Free |
| Rating | 3.2 (6 ratings) — better | — |
| Positive reviews | 55.6% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 10 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 26 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Internet Systems Consortium, Inc. | BEHR Consulting International |
In-app purchases
ISC Dig
No in-app purchases
DNS Mail Info
No in-app purchases
