Comparison

Source Viewer XL vs Dev Calc

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

Head to head
About

Source Viewer XL

View the HTML, CSS, and JavaScript source code of any website. Highlighted syntax, extracted links, and image galleries make code analysis easy. Save images, bookmarks, and history for later.

Highlights
  • Syntax highlighting for HTML, CSS, and JavaScript
  • Extracts and follows embedded links
  • Lists and views all website images
  • Saves images to photo album
  • Bookmark and session history management
  • Copy/paste code functionality
Features
Read full description

Whether you are a web designer or just curious - this application is for you. Source Viewer shows the HTML, CSS and Javascript source code of any website. Features: - Tags, keywords and CSS attributes are highlighted with a different color. - It extracts the links which are embedded into HTML and CSS so that they can be followed easily. - It collects all images from the HTML and CSS which can be viewed separately in a list and full screen. - save images to the photo album - save bookmarks - session history list - toggle word wrap - copy and paste code to clipboard - open the URL in the browser and send it by email

About

Dev Calc

This app assists developers and programmers with immediate numeric conversions between binary, octal, decimal, and hexadecimal formats. It also provides tools for generating color codes from RGB, HSL, and HSV values, with a color picker and preset options.

Highlights
  • Numeric conversion (Bin, Oct, Dec, Hex)
  • Signed/Unsigned options
  • Adjustable bit sizes (8, 16, 32, 64)
  • RGB, HSL, HSV color code generation
  • Color picker
  • Preset color options
Features
Read full description

You can convert numeric to Bin, Oct, Dec, Hex immediately with Signed, Unsigned. ** Introduction ** This is a calculator app to help System Developers and Programmers. Convert numeric to binary, octal, decimal, hex immediately. You can set conversion bit number and signed/unsigned, so you can adjust settings for binary, short, int, long. Also you can get clolor code for system application from RGB and Color Picker. And you can choose preset color simply. ** Overview ** - Convert numeric to binary, octal, decimal, hex immediately. - You can edit each digits for detailed confirmation. - You can get color code from RGB, HSL, HSV and Color Picker. - Using preset color, you can get color code quickly. ** Characteristics ** >> Numeric conversion - You can input numeric in binary, octal, decimal, hex. - You can choose bits size from 8bits, 16bits, 32bits, 64bits. - You can choose signed numeric or unsigned numeric. - you can edit each digits directly. >> Color code - You can see a color code in Hex, RGB, HSL and HSV. - Support alpha channel of color. - You can get a color code from RGB, HSL, HSV adjuster and Color Picker. - You can get a color code just by choosing a preset color. ** Terms of Use ** https://coconutsdevelop.com/en/terms/terms_of_use.html ** Developer website ** https://coconutsdevelop.com/

Screenshots

Dev Calc4 screens

Verdict

The call

The clearest difference is price: Dev Calc at Free against Source Viewer XL's $1.99. Dev Calc also leads on update cadence (every 2 months vs every 28 months) and device support (3 vs 1). Source Viewer XL's advantage is rating (4.7 vs 2.0) and in-app purchases (none vs 1). On review sentiment and ratings volume 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

Dev Calc is free to download; Source Viewer XL costs $1.99 up front. Dev Calc sells 1 in-app purchase, starting at $1.99 per month. Source Viewer XL asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Source Viewer XL holds the better App Store score, 4.7 against 2.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews complicate that: 57% of Source Viewer XL's written reviews are positive against 60% of Dev Calc's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Source Viewer XL ships an update every 28 months, Dev Calc every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard8 real differences · 2 level
Source Viewer XL versus Dev Calc: the parameters behind the verdict, then further details
ParameterSource Viewer XLDev Calc
Price$1.99Free — better
Rating4.7 (3 ratings) — better2.0 (2 ratings)
Positive reviews57.1% of reviews60.0% of reviews — better
Number of ratings3 — better2
Update frequencyEvery 28 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPadiPhone, iPad, iPod — better
Requires iOS15.613.0 — better
Further details — not scored
Size1 MB51 MB
Age rating17+4+
DeveloperPiet JonasToshiya Hondo

Customer experience

Source Viewer XL

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive57.1%
Neutral14.3%
Negative28.6%

Dev Calc

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews5 reviews
Positive60.0%
Neutral0.0%
Negative40.0%

In-app purchases

None

Source Viewer XL

No in-app purchases

1 purchases

Dev Calc

Subscriptions1
  • Remove Ads (Monthly)$1.991 Month

Questions

Is Source Viewer XL free?
Source Viewer XL costs $1.99, with no in-app purchases.
Is Dev Calc free?
Dev Calc is free to download, with in-app purchases available.
Which has better reviews, Source Viewer XL or Dev Calc?
Source Viewer XL is rated higher. Source Viewer XL averages 4.7 out of 5 from 3 ratings, while Dev Calc averages 2.0 from 2 ratings.
Do Source Viewer XL or Dev Calc have ads?
Dev Calc shows ads; Source Viewer XL does not.
Which is updated more often, Source Viewer XL or Dev Calc?
Source Viewer XL ships an update every 28 months, and Dev Calc every 2 months. Most recently, Source Viewer XL was updated on November 1, 2026 and Dev Calc on November 3, 2026.

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