Comparison

Domain Check vs S5

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

S5

Features
Read full description

Easy and fast setup and control of your SikkertHjem S5-Touch alarm system. With the S5-Touch app installed on your iPhone®, you can easily setup your new alarm system and edit all settings of the system, directly from your smartphone. The S5-Touch app also works as a remote controller for the alarm system. Control the alarm no matter where you are in the world. The app works in English, Danish, Norwegian and Swedish. This app is used for S5-Touch alarm systems. Do you own a G5 alarm system, you should download the SikkertHjem G5 App instead.

Screenshots

Domain Check4 screens
S54 screens

Verdict

The call

The clearest difference is in-app purchases: S5 at none against Domain Check's 1. S5 also leads on update cadence (every 3 months vs every 14 months) and iOS requirement (7.0 vs 17.0). On price, 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

Both are free to download. Domain Check sells 1 one-off in-app purchase. S5 asks for nothing beyond the download.

UpkeepUpdate frequency

Domain Check ships an update every 14 months, S5 every 3 months. The most recent releases landed on August 30, 2026 and September 15, 2026 respectively.

Scorecard3 real differences · 7 level
Domain Check versus S5: the parameters behind the verdict, then further details
ParameterDomain CheckS5
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 14 monthsEvery 3 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.07.0 — better
Further details — not scored
Size6 MB78 MB
Age rating4+4+
DeveloperGeekmeSikkertHjem ApS

In-app purchases

1 purchases

Domain Check

One-time1
  • Remove Advertising$0.99
None

S5

No in-app purchases

Questions

Is Domain Check free?
Domain Check is free to download, with in-app purchases available.
Is S5 free?
S5 is free to download, with no in-app purchases.
Do Domain Check or S5 have ads?
Neither Domain Check nor S5 shows ads.
Which is updated more often, Domain Check or S5?
Domain Check ships an update every 14 months, and S5 every 3 months. Most recently, Domain Check was updated on August 30, 2026 and S5 on September 15, 2026.

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