iCurlHTTP vs QR Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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)
QR Viewer
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QR Viewer is a lean scanner for QR codes and barcodes that doesn't catch you off guard: everything you scan is shown first. Links and other actions only start once you turn them on and confirm. That way you see beforehand where a code really leads. SCANNING • QR codes, barcodes (EAN-13, EAN-8, UPC-A, UPC-E, Code 128, Code 39, Code 93, Codabar, ITF-14), Data Matrix, PDF417 and Aztec • Choose the scan type right in the title or recognize all codes at once • Rear camera zoom levels as in the Camera app, e.g. 0.5× · 1× · 2× · 5× • Flashlight and a short vibration on detection • Also read codes from photos and screenshots (can be turned on in the settings) UNDERSTANDING CONTENT • Contacts (vCard, MECARD), events, Wi-Fi access, email, phone, SMS, locations, links, bank transfers (GiroCode), one-time passwords (2FA), bookmarks, Matter setup codes (smart home), JSON, product numbers (EAN, ISBN, ISSN) and Deutsche Post matrix codes are shown clearly as a card with labeled fields • Every field can be copied on its own • An info button explains in plain words what data the code contains and what happens when you tap an action • VDV eTickets such as the Deutschlandticket become readable: ticket number, product, validity and signature check • German federal medication plan: patient, practice and all medicines with dosage, note and reason become readable; the PZN can be copied. The plan is never stored in the history • Amazon anti-counterfeiting codes (Transparency) with serial number • Binary codes appear as a hex view with a text column ACTIONS – OPTIONAL, ALWAYS WITH CONFIRMATION • Off by default: QR Viewer then only shows the content. Turn on the actions in the menu under "Settings" • Open links; known tracking parameters are removed first • Write an email, call, send an SMS, show a place on the map • Add contacts and events, hand 2FA keys to your authenticator app • Look up products and books online, track shipments COPY, SHARE, SHOW • Copy and share content • Show the scanned code as an image – in its original format or as a QR code HISTORY • Reopen, search, swipe away or export the last 25 scans as CSV or JSON • 2FA keys are not stored • The history is stored encrypted (AES-256); the key stays in your device's Keychain Light and dark mode, available in 13 languages. PRIVACY QR Viewer needs no account, contains no ads and collects no data. Codes are analyzed only on your device. When scanning photos, the app only gets the picture you choose – without access to your other photos. The history stays on your device and can be deleted at any time.
Screenshots
Verdict
The clearest difference is update cadence: QR Viewer at every 2 days against iCurlHTTP's every 7 months. iCurlHTTP's advantage is iOS requirement (13.0 vs 15.0). On price, ads, 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. Neither carries in-app purchases, so what you see is what you pay.
iCurlHTTP ships an update every 7 months, QR Viewer every 2 days. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.
| Parameter | iCurlHTTP | QR Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (30 ratings) — better | — |
| Positive reviews | 84.4% of reviews | — |
| Number of ratings | 30 — better | — |
| Update frequency | Every 7 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 9 MB | 21 MB |
| Age rating | 17+ | 4+ |
| Developer | Jason Cox | Thorsten Ludewig |
In-app purchases
iCurlHTTP
No in-app purchases
QR Viewer
No in-app purchases









