Nslookup vs HTML Web Preview
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Nslookup
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Nslookup: DNS Records is a fast, native DNS lookup tool for anyone setting up a website, configuring email, or troubleshooting networking issues. Enter any domain name or IP address to instantly retrieve its DNS records, including A, AAAA, MX, TXT, CNAME, NS, SOA, and PTR. Whether you're pointing a domain to a new host, verifying SPF/DKIM/DMARC records for email deliverability, or confirming a DNS change has propagated, Nslookup gives you the answer in seconds ā no terminal required. The app automatically keeps a local history of the domains and IP addresses you've recently looked up, so you can jump back into a lookup without retyping it. This history stays on your device. WHO IT'S FOR Developers and sysadmins setting up new sites or servers Anyone configuring email (SPF, DKIM, DMARC, MX records) IT and networking professionals troubleshooting DNS issues Domain owners verifying registrar or host changes
HTML Web Preview
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Open your web projects on iPhone and iPad. HTML Web Preview opens a folder of HTML and its related files, with JSON and source available alongside the page. Explore your own study materials, web documents, small tools and prototypes on your device. ⢠Open a project folder: keep HTML, CSS, JavaScript, images and JSON together with their file structure intact. ⢠Keep your originals: the app does not modify selected files or folders. Switch between formatted JSON and original text, and refresh after editing files in another app. ⢠Preview before running: folders open with page JavaScript disabled. Review the contents and run only projects you trust. A separately confirmed compatibility mode is available for some web features. ⢠Adjust the view: collapse the controls, use the current device screen, or select a fixed or custom resolution. Zoom the page as in a browser to adjust text and element sizes, line wrapping and layout. Resolution settings do not reproduce every feature of a device. ⢠Inspect errors: distinguish missing files from page errors and check the project activity log. Before you begin Projects can work offline when all required files are stored on your device and no external services are needed. Cloud downloads, external web resources and ads may require internet access. ZIP extraction, file editing, server-side programs such as Python, PHP or Node.js, project builds and download management are not supported. Open the finished web output folder for projects that need a build step. Page inputs and runtime state are not permanently saved and may reset when a project closes or restarts. Read-only access does not block every form of external communication. Run only trusted projects without sensitive files. The version 1.3 interface supports 15 languages: Korean, English, Japanese, Simplified and Traditional Chinese, German, French, Spanish, Brazilian Portuguese, Arabic, Uzbek, Vietnamese, Thai, Hebrew and Serbian (Latin script). Your documents and code remain in their original language.
Screenshots
Verdict
The clearest difference is ads: Nslookup at none against HTML Web Preview's shown. HTML Web Preview's advantage is iOS requirement (17.0 vs 26.5). On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 15, 2026 and October 16, 2026 respectively.
| Parameter | Nslookup | HTML Web Preview |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Weekly |
| Ads | No ā better | Yes |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad ā better |
| Requires iOS | 26.5 | 17.0 ā better |
| Further details ā not scored | ||
| Size | 1 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Ronald Guillen | Do Yun Kim |
In-app purchases
Nslookup
No in-app purchases
HTML Web Preview
No in-app purchases
Questions
Is Nslookup free?
Is HTML Web Preview free?
Do Nslookup or HTML Web Preview have ads?
Which is updated more often, Nslookup or HTML Web Preview?
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