NSLookup vs iCurlHTTP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NSLookup
This utility app retrieves detailed DNS information for any domain. It helps users find IP addresses, view name servers, and query specific DNS records like NS and CNAME. It can also force authoritative responses from main DNS servers.
- View domain DNS information
- Find target IP address
- See name server records
- Query NS and CNAME records
- Force authoritative responses
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NSLookup is an internet utility to get domain's DNS information. It will help you to find the target IP address of a domain or see what name servers are set on a specific domain. NSLookup for iPhone and iPad allows you to see the public DNS records of domains or sub domains. Then you may also query the NS and CNAME records. It's also possible to force it to get an authoritative response from main DNS server of the domain.
iCurlHTTP
Test web server responses with cURL-like functionality on your iPhone or iPad. Simulate various browsers and inspect raw HTTP headers and HTML. Analyze network performance with detailed timing information.
- Simulate browser user-agents
- Inspect raw HTTP headers and HTML
- Support for GET, HEAD, POST, PUT, DELETE, OPTIONS, TRACE requests
- SSL support with certificate info
- History of tested URLs
- Detailed HTTP timing analysis
- HTTP/2 and IPv4/IPv6 support
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HTTP Web Server Response Diagnostic Tool - Curl for iPhone and iPad iCurlHTTP is a simple, easy to use app that allows you to run MacOS/Linux-like cURL tests against URLs. It can simulate different web browsers (user-agents) to retrieve the raw HTTP headers and HTML response from web servers. ** GET, HEAD & POST Requests (GET, HEAD, POST, PUT, DELETE, OPTIONS and TRACE on iPad) ** SSL Support - https requests with basic certificate and handshake information ** Keeps a history of URLs tested with HEADER and POST data and provides them in a dropdown for easy repeated testing ** Simulates curl, iPhone, iPad, Safari, IE, Chrome and custom user-agent browsers ** Simple single-view interface with realtime result screen. ** iPhone and iPad support ** Verbose and Basic Detail ** HTTP Timing Details (Name Lookup, TCP Connect, SSL Handshake, First Byte and Total) ** Set custom User-Agent, Host Headers, Timeouts, HTTP Authentication, SSL Mode and POST Data ** Share Feature to send output to Clipboard, Printer and Email ** HTTP/2 Support ** IPv4 and IPv6 DNS Resolution with Option for Manual Address Resolution (via HOST:PORT:ADDRESS)
Screenshots
Verdict
The clearest difference is rating: iCurlHTTP at 4.4 against NSLookup's 3.0. iCurlHTTP also leads on in-app purchases (none vs 1) and ads (none vs shown). On price, ratings volume, update cadence 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. NSLookup sells 1 one-off in-app purchase. iCurlHTTP asks for nothing beyond the download.
iCurlHTTP holds the better App Store score, 4.4 against 3.0. Both are backed by a comparable volume of ratings — 31 and 30 respectively. Written reviews point the same way: 54% of NSLookup's written reviews are positive against 84% of iCurlHTTP's.
NSLookup ships an update every 9 months, iCurlHTTP every 7 months. The most recent releases landed on September 21, 2026 and August 18, 2026 respectively.
| Parameter | NSLookup | iCurlHTTP |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (31 ratings) | 4.4 (30 ratings) — better |
| Positive reviews | 54.0% of reviews | 84.4% of reviews — better |
| Number of ratings | 31 — better | 30 |
| Update frequency | Every 9 months | Every 7 months — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 13.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 30 MB | 9 MB |
| Age rating | 4+ | 17+ |
| Developer | Dayana Networks Ltd | Jason Cox |
Customer experience
NSLookup
iCurlHTTP
In-app purchases
NSLookup
- NSLookup Pro$1.99
iCurlHTTP
No in-app purchases








