DMARCFlow vs Resolver Race
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
DMARCFlow
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DMARCFlow helps you find out who is sending email in your name and whether your domain is protected against spoofing and phishing. Run free DNS checks in a few taps, understand the results without being an email expert, and monitor every domain you own from one place. FREE CHECKER TOOLS, NO ACCOUNT REQUIRED - DMARC Checker: validate your DMARC policy, alignment mode, subdomain policy and reporting setup - SPF Checker: inspect your SPF record and DNS lookup count before you hit the limit - DKIM Checker: verify that your DKIM signing key for a selector is published and valid - BIMI Checker: check whether your brand indicator is set up correctly Every check comes back as a score from 0 to 10 with a rating from Excellent to Critical, a clear list of issues and warnings, and a plain-language explanation of what each finding means and what to fix. MORE FREE TOOLS - Deliverability Check: MX, SPF, DKIM and DMARC in one check, with a single score for your domain - MX Checker: find your mail servers, see whether they are reachable and redundant, and spot null MX or missing TLSA records - Blacklist Check: test a domain or IP address against well-known spam blacklists and see exactly where it is listed - Header Analyser: paste the headers of an email to trace its delivery path and authentication results GET A DETAILED PDF REPORT Enter your email address and we send you a PDF with detailed findings and recommendations for your domain. No spam, no account required. MONITOR ALL YOUR DOMAINS (DMARCFLOW ACCOUNT) Sign in with your DMARCFlow account to go beyond one-off checks: - Live compliance dashboard across all monitored domains: compliance rate, pass rate, DMARC and policy coverage - Detailed DMARC reports showing who sends as you, from which IP addresses and with what result - Filter reports by date range, SPF or DKIM failures and search by domain, organisation or report ID - Per-record breakdown of SPF and DKIM results with an explanation of what happened and why - Geographic map of your email sources - Alerts on spoofing attempts and misconfigurations WHY DMARC MATTERS Without DMARC, SPF and DKIM, anyone can send email that looks like it comes from your domain. Properly configured authentication stops spoofing, improves deliverability and builds trust with every email you send. DMARCFlow shows you exactly where you stand and what to do next. Also included: - Full dark mode support - Available in 14 languages: English, German, French, Spanish, Portuguese, Italian, Turkish, Japanese, Chinese, Arabic, Swedish, Norwegian, Finnish and Hebrew The checker tools are free. Domain monitoring, dashboards and reports require a DMARCFlow account. See plans and pricing at dmarcflow.com.
Resolver Race
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Your DNS resolver decides how fast every web page starts loading - and the one your network handed you may not be the quickest, or the most honest. Resolver Race finds out in a couple of minutes. It benchmarks dozens of public DNS resolvers from your iPhone, on the network you're actually using, and ranks them by real measured speed. RACES EVERY KIND OF DNS - Classic DNS over IPv4 and IPv6 - DNS-over-HTTPS (DoH) - DNS-over-TLS (DoT) - Your current DNS server, included automatically for comparison THREE REAL-WORLD TESTS - Cached: a name the resolver already knows, for pure round-trip speed - Uncached: a name it has never seen, so it must do the full lookup - New .com: a domain that doesn't exist, timing the .com path MORE THAN JUST SPEED - Finds which resolvers are actually reachable before timing anything - Detects when your router answers in a resolver's place instead of the real thing - Checks DNSSEC validation, and whether it is genuinely enforced - Flags resolvers that redirect domains that don't exist to ad pages - Shows what each resolver blocks: ads, adult content, malware - Measures how close the content servers each resolver hands you really are BUILT TO BE TRUSTED Everything runs on your device. No accounts, no analytics, no servers of ours - results never leave your phone unless you export them yourself. FREE, WITH A ONE-TIME UPGRADE Free includes five resolvers, six queries per test and one run per race - enough to see whether your current DNS is holding you back. Resolver Race Pro is a single purchase, yours for life with no subscription: the full resolver catalogue, up to 60 queries per test, repeat runs up to 100 times for rock-solid averages, and all the trust, filtering and content-speed checks. Inspired by the classic desktop DNS benchmarks, rebuilt for iPhone.
Screenshots
Verdict
The clearest difference is update cadence: Resolver Race at daily against DMARCFlow's monthly. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
DMARCFlow ships an update monthly, Resolver Race daily. Both last shipped on October 31, 2026.
| Parameter | DMARCFlow | Resolver Race |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Daily β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.6 | 18.0 β better |
| Further details β not scored | ||
| Size | 9 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Ucar Solutions UG (haftungsbeschrΓ€nkt) | Saed Zakari |
In-app purchases
DMARCFlow
No in-app purchases
Resolver Race
No in-app purchases
Questions
Is DMARCFlow free?
Is Resolver Race free?
Do DMARCFlow or Resolver Race have ads?
Which is updated more often, DMARCFlow or Resolver Race?
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