Comparison

Hooloovoo vs LibrarySorter

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

Head to head
About

Hooloovoo

This utility app converts colors between various formats like RGB, CMYK, and XYZ. It can identify the closest CSS or Crayola color, import custom palettes, and even capture colors using your device's camera. It's a comprehensive tool for all your color conversion needs.

Highlights
  • Multiple color format conversion (RGB, CMYK, XYZ, etc.)
  • Find closest CSS/Crayola colors
  • Import custom color palettes
  • Capture colors with device camera
  • Supports iOS 7 and newer devices
Features
Read full description

Have you ever needed to convert a colour from one format to another? If you have, Hooloovoo is the utility that you’ve been waiting for. With Hooloovoo you can convert to and from RGB, CMYK, XYZ, Yxy, CIE Lab, Hunter and many more besides. You can find out what the closest CSS or Crayola colour is and import your own palettes. As if that wasn’t enough, Hooloovoo can even capture a colour using the built in camera. Hooloovoo is your one-stop swiss army knife for all your colour needs. If you have a specialist colour conversion requirement that Hooloovoo doesn’t yet support, please get in touch and it will be our pleasure to update Hooloovoo accordingly. Hooloovoo has been tested on iOS 7 devices and newer from the original iPhone 4, through to the very latest iPhone 7s. If your iOS device can run iOS 7 or newer then you can run Hooloovoo on it.

About

LibrarySorter

Organize your photo library with intuitive swipe gestures and smart albums. This app uses on-device machine learning to identify and keep the best versions of similar pictures, helping you declutter and free up space. Comparison mode allows for side-by-side viewing to make decisions easier.

Highlights
  • Intuitive swipe gestures for sorting
  • On-device ML for best photo selection
  • Automatic Smart Albums
  • Side-by-side comparison mode
  • Effortless memory organization
  • Streamlined user interface
Features
Read full description

Effortlessly tidy up your photo library with LibrarySorter. Say goodbye to clutter and hello to efficiency as you swiftly sort your pictures using intuitive swipe gestures. Take control of your photo collection and easily find the best shots with our innovative on-device machine learning feature that identifies and helps you keep only the finest versions of similar pictures. Smart Albums automatically groups your photos into albums, making it easier than ever to organize and find your memories. No more endless scrolling to find that one photo. With Smart Albums, your photos are sorted and ready for you to enjoy. Need to make decisions? LibrarySorter's comparison mode lets you view and compare two pictures side by side, ensuring you always keep what matters most. Key Features: • Swiftly sort your photos with easy-to-use swipe gestures. • On-device machine learning to identify and keep the best version of similar pictures. • Smart Albums that automatically group your photos. • Comparison mode for side-by-side viewing and easy decision-making. • Organize your memories effortlessly and free up space on your device. • Streamlined user interface for a seamless experience. Download LibrarySorter now and transform your photo management into a breeze!

Screenshots

Hooloovoo3 screens
LibrarySorter4 screens

Verdict

The call

The clearest difference is rating: Hooloovoo at 5.0 against LibrarySorter's 1.0. Hooloovoo also leads on in-app purchases (none vs 1) and iOS requirement (8.0 vs 15.5). LibrarySorter's advantage is update cadence (every 4 days vs every 21 months). On price, ratings volume, ads 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. LibrarySorter sells 1 one-off in-app purchase. Hooloovoo asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Hooloovoo holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Hooloovoo ships an update every 21 months, LibrarySorter every 4 days. The most recent releases landed on October 5, 2026 and September 12, 2026 respectively.

Scorecard5 real differences · 5 level
Hooloovoo versus LibrarySorter: the parameters behind the verdict, then further details
ParameterHooloovooLibrarySorter
PriceFreeFree
Rating5.0 (1 ratings) — better1.0 (1 ratings)
Positive reviews—0.0% of reviews
Number of ratings11
Update frequencyEvery 21 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS8.0 — better15.5
Further details — not scored
Size2 MB2 MB
Age rating4+4+
DeveloperPascal HarrisPhilippe Weidmann

Customer experience

Hooloovoo

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

LibrarySorter

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Hooloovoo

No in-app purchases

1 purchases

LibrarySorter

One-time1
  • Library Sorter - Unlimited$1.99

Questions

Is Hooloovoo free?
Hooloovoo is free to download, with no in-app purchases.
Is LibrarySorter free?
LibrarySorter is free to download, with in-app purchases available.
Which has better reviews, Hooloovoo or LibrarySorter?
Hooloovoo is rated higher. Hooloovoo averages 5.0 out of 5 from 1 ratings, while LibrarySorter averages 1.0 from 1 ratings.
Do Hooloovoo or LibrarySorter have ads?
Neither Hooloovoo nor LibrarySorter shows ads.
Which is updated more often, Hooloovoo or LibrarySorter?
Hooloovoo ships an update every 21 months, and LibrarySorter every 4 days. Most recently, Hooloovoo was updated on October 5, 2026 and LibrarySorter on September 12, 2026.

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