Domain Command vs NetDiag
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Domain Command
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You have domains. They expire. This app makes sure you know before they do. Track your domains and SSL certificates in one place. Get notified before anything expires. No account, no server, no tracking. Buy it once, own it forever. DOMAIN & SSL MONITORING, FULLY ON YOUR DEVICE Domain Command performs WHOIS and RDAP lookups directly from your iPhone — no middleman server, no cloud processing, no data collection. Your domain portfolio stays on your device and in your iCloud, period. WHY DOMAIN COMMAND - Track domain expiry dates, registrar info, and nameservers via WHOIS/RDAP - Monitor SSL/TLS certificates — issuer, validity dates, and status at a glance - Get local notifications before anything expires — 30, 14, or 7 days out - All lookups happen on-device using public WHOIS and RDAP protocols - Works offline — cached data and pre-scheduled notifications need no internet - iCloud sync keeps your domains in sync across devices — still no server needed ONE-TIME PURCHASE. NO SUBSCRIPTION. EVER. Most domain trackers charge you monthly to run a cron job on their server. Domain Command has no server. WHOIS is a public protocol — your device queries it directly. That means zero recurring costs for me, and zero subscription for you. Pay once, use it forever. Free: track up to 3 domains with all features. Unlock the full app for unlimited domains, widgets, iCloud sync, CSV import, and per-domain notification settings. BUILT FOR DEVELOPERS & SYSADMINS - Information-dense UI inspired by mission control status boards - Domain names and expiry data in monospaced type — because they are data - Color-coded urgency: green (nominal), amber (advisory), red (critical) - Pull-to-refresh runs a full WHOIS + SSL check on all your domains - Batch add: paste multiple domains at once - CSV import and export for your records - Home screen widgets show your most urgent renewals at a glance NOTIFICATIONS THAT JUST WORK Notifications are scheduled locally via iOS. The system owns them once set — they fire even if the app is killed. Every time you open the app, it refreshes expiry dates and reschedules all reminders. Simple, reliable, no server ping required. PRIVACY BY ARCHITECTURE - No analytics, no tracking, no third-party SDKs - No accounts, no sign-ups, no email collection - The only network calls are WHOIS/RDAP lookups to public registry servers and optional SSL checks - One optional, opt-in feature: if the app can't parse a WHOIS response, you can choose to send the public registry record to the developer to improve parsing. That's it. No personal data, ever. - iCloud sync is Apple's infrastructure — the developer never sees your data SMART WHOIS PARSING Domain Command uses RDAP (structured JSON) where available, and falls back to WHOIS with format-specific parsers for major registrars. If a format isn't recognized, you can enter the expiry date manually and optionally report the format so it gets supported in the next update. PRIVACY POLICY: https://tomaskafka.com/domaincommand/privacy.html
NetDiag
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NetDiag est votre boîte à outils de diagnostic réseau, conçue pour être simple et efficace. FONCTIONNALITÉS : - Info IP — Consultez votre adresse IP locale et externe (IPv4/IPv6), avec résolution rDNS - Test manuel — Effectuez des requêtes DNS et des tests de ping (ICMP) vers n'importe quel domaine ou adresse IP - Test Internet — Un diagnostic guidé qui identifie précisément où se situe un problème de connexion (réseau local, fournisseur Internet, DNS), avec des pistes de solution concrètes - Test WWW — Analysez un domaine en profondeur : statut WHOIS, résolution DNS, réponse HTTP et certificat SSL, détection de CMS (WordPress, Joomla, Drupal), informations d'hébergement et numéro AS - Test de pertes de paquets - Test de débits - Test premium pour appels vidéos Que vous soyez un utilisateur curieux de votre réseau ou un professionnel qui gère des sites web, NetDiag vous donne les réponses rapidement, sans jargon technique inutile. Disponible en français, anglais et espagnol. Version gratuite avec publicités. Achat unique disponible pour retirer les publicités.
Screenshots
Verdict
The clearest difference is ads: Domain Command at none against NetDiag's shown. NetDiag's advantage is iOS requirement (16.0 vs 26.0). On price, update cadence, 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. Domain Command sells 1 one-off in-app purchase and NetDiag sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Domain Command ships an update weekly, NetDiag every 6 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.
| Parameter | Domain Command | NetDiag |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Every 6 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 26.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Tomas Kafka | Reseau Inter-Systeme inc. |
In-app purchases
Domain Command
- Lifetime unlock$7.99
NetDiag
- Retirer les publicités$1.99









