Comparison

Domain Check vs GrepEx

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Domain Check

Instantly retrieve detailed WHOIS information for any website using real WHOIS servers. Check domain availability, view comprehensive details, and maintain a history of your queries. Supports all top-level domains.

Highlights
  • Real WHOIS server queries
  • Unlimited queries
  • All TLD support
  • Domain availability check
  • Detailed domain information
  • Query history
Features
Read full description

Professional Domain Intelligence Domain Check is a focused lookup and monitoring tool for people who work with domains every day. Check availability, ownership signals, DNS, SSL, email security, blacklist status, expiry risk, and portfolio history from one clean iPhone and iPad app. Use it for domain research, brand protection, client audits, acquisition checks, technical reviews, expiry tracking, and ongoing watchlist monitoring. Key Features - Single domain lookup for fast checks - Batch checking for pasted, imported, or saved domain lists - WHOIS availability status: Available, Registered, or Unclear - Confidence level and human-readable result explanation - Registrar and expiry details when available - WHOIS privacy and redaction signal detection - DNS-over-HTTPS lookup with Cloudflare to Google fallback - DNS records for A, AAAA, MX, NS, TXT, and CNAME - Nameserver change detection between saved checks - SSL validation using the system HTTPS trust check - Email security review for MX, SPF, DMARC, DMARC policy, and DKIM hints - DNSBL blacklist checks for discovered IPv4 records - Domain health score, risk labels, freshness warnings, and expiry badges - Domain suggestions, typo variants, and brand-protection variants - Saved watchlist for favorite and alerted domains - Expiry dashboard for important domains - Grouped batch history with expandable batch runs - Searchable history with filters for status, saved domains, expiry, alerts, blacklist, and SSL issues - Compact or detailed history row density - Multi-select history actions for compare, export, favorite, tag, recheck, and delete - Side-by-side domain comparison with highlighted technical values - Per-domain notes and tags - Saved reusable batch lists with searchable picker - Batch templates for startup names, brand protection, and client-domain lists - Batch pause, resume, stop, progress overlay, and rate-limit warning - Native PDF export for single results and full history - CSV export for history, notes, and tags - CSV and text import for domain lists - Copy actions for domain, summary, WHOIS, DNS records, and key result values - Configurable preferred registrar URL - Local expiry reminders and availability alerts - iCloud key-value mirroring when available - App Shortcut and widget target support - Clean cyber-tech dark interface built for iPhone and iPad Domain Check keeps domain intelligence practical: quick enough for one lookup, structured enough for professional batch workflows.

About

GrepEx

Features
Read full description

GrepEx is the ultimate regex and dorking toolkit for developers, security researchers, and power users. Generate production-ready regular expressions in 22 programming languages and build precise search queries—all from your pocket. REGEX GENERATOR Stop wrestling with regex syntax. Select what you need to match, and GrepEx generates the pattern with language-specific code you can copy directly into your project. • 22 Languages: JavaScript, Python, Go, Rust, Java, C#, PHP, Ruby, Swift, Kotlin, TypeScript, Perl, Bash, PowerShell, and more • 80+ Templates: Email, URL, IP address, phone numbers, dates, credit cards, passwords, file paths, log parsing, and dozens more • Live Testing: Paste sample text and see matches highlighted instantly • Pattern Explanation: Understand what each regex component does in plain English • Safe Testing: Built-in protection against catastrophic backtracking (ReDoS) SEARCH DORKING ENGINE Craft advanced search queries to find exactly what you're looking for. Perfect for research, competitive analysis, and discovering hard-to-find resources. • Visual Query Builder: Combine operators like site:, filetype:, inurl:, intitle:, and intext: without memorizing syntax • 3,600+ GHDB Templates: Access the GHDB with categorized, searchable dork patterns • Smart Exclusions: Filter out noise with preset exclusion lists for cleaner results • One-Tap Search: Open your crafted query directly in your browser BUILT FOR PRODUCTIVITY • History & Favorites: Never lose a pattern you've created • Export & Import: Back up your patterns and transfer between devices • Dark Mode: Easy on the eyes during late-night coding sessions • VoiceOver Support: Full accessibility for all users PRIVACY FIRST Your data never leaves your device. No accounts, no cloud sync, no analytics, no tracking. GrepEx works entirely offline for core features. GREPEX PRO Unlock unlimited potential: • Save unlimited patterns and dorks • Access all 22 programming languages • Full GHDB search and save • Extended history (100 items) • Export/Import functionality Whether you're validating user input, parsing log files, scraping data, or conducting security research, GrepEx puts professional-grade tools in your hands. Download GrepEx and master regex today.

Screenshots

Domain Check4 screens
GrepEx4 screens

Verdict

The call

The clearest difference is price: Domain Check at Free against GrepEx's $1.99. GrepEx's advantage is in-app purchases (none vs 1) and update cadence (weekly vs every 14 months). On ads 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

CostPrice · In-app purchases · Ads · Monetization

Domain Check is free to download; GrepEx costs $1.99 up front. Domain Check sells 1 one-off in-app purchase. GrepEx asks for nothing beyond the download.

UpkeepUpdate frequency

Domain Check ships an update every 14 months, GrepEx weekly. The most recent releases landed on September 30, 2026 and October 7, 2026 respectively.

Scorecard4 real differences · 6 level
Domain Check versus GrepEx: the parameters behind the verdict, then further details
ParameterDomain CheckGrepEx
PriceFree — better$1.99
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 14 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.013.4 — better
Further details — not scored
Size6 MB12 MB
Age rating4+4+
DeveloperGeekmeJeremy Laratro

In-app purchases

1 purchases

Domain Check

One-time1
  • Remove Advertising$0.99
None

GrepEx

No in-app purchases

Questions

Is Domain Check free?
Domain Check is free to download, with in-app purchases available.
Is GrepEx free?
GrepEx costs $1.99, with no in-app purchases.
Do Domain Check or GrepEx have ads?
Neither Domain Check nor GrepEx shows ads.
Which is updated more often, Domain Check or GrepEx?
Domain Check ships an update every 14 months, and GrepEx weekly. Most recently, Domain Check was updated on September 30, 2026 and GrepEx on October 7, 2026.

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