Comparison

Unit Converter vs HTML Viewer & CSS Editor

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Unit Converter

This free unit converter offers over 40 categories and 200+ currencies with live exchange rates. It features batch conversion, offline functionality, and a user-friendly interface with dark mode. All features are permanently free with no sign-up or data collection.

Highlights
  • 40+ conversion categories
  • 200+ currencies with live rates
  • Batch conversion
  • Offline functionality
  • Dark mode
  • CSV export
Features
Read full description

ConvertMaster is a completely free, ad-free unit converter. Launch and go. No sign-up. No data collection. All 40 categories are permanently free. No paywalls. ALL FEATURES FREE FOREVER: • 40 categories — currency, length, weight, area, volume, temperature, speed, time, pressure, energy, power, data storage, cooking, angle, fuel, force, torque and more • 200+ currencies with live exchange rates, updated hourly • Currency picker with search — find any currency instantly • Multilingual currency names (CLDR standard) • Home page ranks categories by your usage frequency • Restores your last-used category on launch • Batch convert — enter multiple values, see all results instantly • CSV export for batch results • Metric and imperial side by side • Scientific notation for extreme values • Dark mode • 100% offline (except live currency rates) No account. No sign-up. No data collection. No internet required (except live rates). Most converters limit their currency list or lock categories behind paywalls. ConvertMaster gives you everything — 200+ currencies with search, 40 categories — all for free, forever. Voluntary support available in app — optional, never nagged. No data collected. No tracking. No sharing. Your numbers, on your device only.

About

HTML Viewer & CSS Editor

Visually customize web pages in real time without coding. Experiment with layouts, change text, adjust styles, and swap images instantly. Save and export your design prototypes for sharing or reference.

Highlights
  • Edit text instantly
  • Customize colors and styles
  • Replace images
  • Live visual editing
  • Save and export designs
  • Simple and intuitive interface
Features
Read full description

Edit HTML pages visually with live previews. Editra is a powerful HTML viewer and visual editor that lets you inspect, preview, and customize web pages without complicated tools. Open HTML files, edit text, change colors, replace images, adjust styles, and instantly see your changes. Whether you're learning web design, prototyping layouts, or experimenting with HTML and CSS, Editra provides an intuitive editing experience with real-time previews. FEATURES • HTML Viewer Open and preview HTML files with a fast and responsive interface. • Visual HTML Editor Edit page content without manually modifying source code. • Inspect Page Elements Select page elements and quickly customize their content and appearance. • Edit Text Change headings, paragraphs, buttons, and other text instantly. • Customize CSS Styles Modify colors, fonts, spacing, borders, backgrounds, and other visual styles. • Replace Images Preview different designs by swapping images directly on the page. • Live Preview See every change immediately while editing. • Save Projects Store your work and continue editing later. • Export Your Work Export edited projects for sharing or future reference. • Clean Interface Designed for speed, simplicity, and productivity. PERFECT FOR • Web designers • Front-end developers • Students learning HTML & CSS • UI/UX designers • Website prototyping • HTML experimentation • Design previews EDITRA PRO Unlock premium features: • Unlimited projects • Unlimited exports • Advanced editing tools • Premium customization options • Ad-free experience IMPORTANT Editra is intended for visual editing, learning, and prototyping. Changes are applied locally within the app and do not modify live websites or remote web content. Privacy Policy: https://redizeuz.com/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Subscription Information • Editra Pro Weekly — $4.99/week • Editra Lifetime — One-time purchase Payment will be charged to your Apple ID account at confirmation of purchase. Weekly subscriptions automatically renew unless canceled at least 24 hours before the end of the current billing period. Manage or cancel subscriptions anytime in your Apple ID account settings.

Screenshots

Unit Converter4 screens
HTML Viewer & CSS Editor4 screens

Verdict

The call

The clearest difference is review sentiment: Unit Converter at 100% against HTML Viewer & CSS Editor's 50%. Unit Converter also leads on ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Unit Converter sells 2 one-off in-app purchases and HTML Viewer & CSS Editor sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Unit Converter ships an update every 10 days, HTML Viewer & CSS Editor every 6 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 6 level
Unit Converter versus HTML Viewer & CSS Editor: the parameters behind the verdict, then further details
ParameterUnit ConverterHTML Viewer & CSS Editor
PriceFreeFree
Rating—3.4 (5 ratings) — better
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings—5 — better
Update frequencyEvery 10 daysEvery 6 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.6
Further details — not scored
Size25 MB15 MB
Age rating9+4+
Developer磊 刘Ebenezer Oteng

Customer experience

Unit Converter

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

HTML Viewer & CSS Editor

All ratings5 ratings
Positive60.0%
Neutral0.0%
Negative40.0%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

2 purchases

Unit Converter

One-time2
  • Unit Conversion Standard Version$2.99
  • Unit Conversion Pro Edition$5.99
4 purchases

HTML Viewer & CSS Editor

Subscriptions3
  • Premium Weekly$4.997 Days
  • editra monthly pro$7.991 Month
  • Yearly Subscriptions$19.991 Year
One-time1
  • Lifetime access$14.99

Questions

Is Unit Converter free?
Unit Converter is free to download, with in-app purchases available.
Is HTML Viewer & CSS Editor free?
HTML Viewer & CSS Editor is free to download, with in-app purchases available.
Do Unit Converter or HTML Viewer & CSS Editor have ads?
HTML Viewer & CSS Editor shows ads; Unit Converter does not.
Which is updated more often, Unit Converter or HTML Viewer & CSS Editor?
Unit Converter ships an update every 10 days, and HTML Viewer & CSS Editor every 6 days. Most recently, Unit Converter was updated on October 31, 2026 and HTML Viewer & CSS Editor on November 5, 2026.

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