HTML Viewer Pro vs MathLib
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HTML Viewer Pro
View HTML source code from URLs or directly from Safari. This app offers multi-tab browsing, bookmarking, and search functionality. Customize the display with various themes, fonts, and user agents.
- View source code from URLs
- View source code from Safari share
- Multi-tab browsing
- Bookmark and history management
- Keyword search in source code
- Switch between static and dynamic HTML
- Customizable themes and fonts
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It is a multi-functional HTML source viewer. You can view the source code by URLs, and of course, you can also view the source code from Safari's share button. Since it is the latest version of the app, it covers almost all the features of other apps. [Features & Functions] - Browser and source code switching. - Multi-tab browsing. - Display bookmarks and history. - Search for keywords in the source code. - Switch between static and dynamic HTML. - Changing the user agent. - Display non-HTML languages. - Use the cloud, such as iCloud, Dropbox, OneDrive, etc. - Use local files in the iPhone and iPad. - Balanced light operation. [View source code] - About 90 different design themes available. - Change the font, size and line spacing. - Switch between static and dynamic HTML. - Support for almost all programming languages (over 180). [Terms & Conditions] https://www.hayaya.net/terms-conditions/html-viewer.html [Privacy Policy] https://www.hayaya.net/privacy-policy/html-viewer.html
MathLib
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Do the math once. Use it again. MathLib turns the calculations you repeat into reusable tools. Work through a quick calculation, keep the steps that matter, and change the inputs next time instead of typing everything again. START CALCULATING RIGHT AWAY Write expressions, see their results, and use named values in later calculations. Keep related steps together while you work through everyday math, study problems, or technical calculations. KEEP THE STEPS, NOT JUST THE ANSWER Save a useful calculation as a personal formula. Choose its inputs and outputs, then run it whenever you need it. Adjust a number or slider to see the results update without rewriting the expressions. SKIP THE BLANK PAGE Explore 104 ready-made formulas across 13 categories, including finance, geometry, physics, engineering, statistics, and unit conversions. Preview a formula for free, or save your own copy to customize. GO BEYOND A SINGLE NUMBER Use scientific functions, units, fractions, complex numbers, vectors, and matrices. Add plots to explore how a result changes across a range. Built-in function suggestions and a searchable reference help you find the syntax you need. YOUR MATH, ON YOUR IPHONE Calculate, browse the catalog, and run saved formulas offline. Your personal formulas stay on your iPhone: no account, cloud sync, ads, or tracking. Scratch calculations are temporary; save a formula to keep useful work. FREE TO CALCULATE. PRO TO SAVE MORE. The full calculator, all 104 templates, plotting, units, and reference are free. Save up to 2 personal formulas with Free. MathLib Pro removes that saving limit with a one-time purchase. No subscription. Purchases and restoration require access to the App Store.
Screenshots
Verdict
The clearest difference is ads: MathLib at none against HTML Viewer Pro's shown. HTML Viewer Pro's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On price and in-app purchases 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. HTML Viewer Pro sells 2 in-app purchases, starting at $1.99 per month and MathLib sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | HTML Viewer Pro | MathLib |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (46 ratings) — better | — |
| Positive reviews | 49.1% of reviews | — |
| Number of ratings | 46 — better | — |
| Update frequency | Every 15 months | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 33 MB | 15 MB |
| Age rating | 17+ | 12+ |
| Developer | Hayato Shimizu | Andreu Pifarre |
In-app purchases
HTML Viewer Pro
- Premium (Monthly plan)$1.991 Month
- Premium (Buying out)$19.99
MathLib
- MathLib Pro$14.99








