Free

Details

  • Released
  • Updated
  • November 14, 2013
  • September 8, 2026

Features

KCLS screenshot #1 for iPhone
KCLS screenshot #2 for iPhone
KCLS screenshot #3 for iPhone
KCLS screenshot #4 for iPhone
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KCLS screenshot #6 for iPhone
KCLS screenshot #7 for iPhone
KCLS screenshot #8 for iPhone
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About

Manage your library account conveniently from your mobile device. Discover new books, place holds, renew borrowed items, and easily locate library branches and their hours.

Discover and search library collection
Place, manage, and cancel holds
Renew borrowed items
Rate and save titles
Find library locations and hours
Browse bestsellers and new arrivals
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What users say

See all reviews

What's New in KCLS

2.24.0

September 8, 2026

Stability improvements for a smoother app launch and sign-in experience

User reviews

Unreliable/Unstable

Love the KCLS, but wish their technology worked more consistently. Unfortunately, what *is* reliable is how UNreliable the app is: keeps logging you out, constant sign in issues… the poke in the eye is that the failed sign in attempts via the app count against you if you give up on the app and try to log in via a desktop computer.
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Doesn’t always work

They’ve fixed the last issues I mentioned but issues still remain: the Return book function doesn’t work from the app anymore, which extends wait times. I wish the search bar was coded less narrowly to correct for misspellings or allow for less than exact search terms.

Kids love it!

Easy to log in and fun books to read!

Excellent!

Excellent app!

No notifications

Why on earth build an app that let’s you place holds on books but doesn’t notify you when they’re ready to be picked up? It’s beyond stupid. “We notify by email” Sorry, no. It makes zero sense to have one half of an interaction occur in one place and the second half in another. No other app does this. Even other apps used by KCLS like Libby and Overdrive don’t work that way.
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User experience

🐞

Reported Bugs

173 issues

Keeps logging out

Bug

Constant sign in issues

Bug

Failed sign in attempts count against user

Bug

Return book function doesn't work

Bug

Search bar coded too narrowly

Bug

No notifications for holds ready

Bug

App times out

Bug

Bookshelf features show blank

Bug

Glitching frequently

Bug

Kicks user out

Bug

Won't accept card or passcode

Bug

System errors after login prompts

Bug

Search results blank

Bug

Borrowing tab won't show books

Bug

Opening a book doesn't work

Bug

App crashes when viewing 'For Later' shelf

Bug

App loads website in all views

Bug

Navigation is a mess

Bug

Wasted space

Bug

Hard to find things

Bug

App gets worse with each update

Bug

Developers lack common sense

Bug

Borrowing section takes long to load

Bug

Borrowing section often blank

Bug

App not reliable

Bug

App didn't resize on iPad

Bug

App remains small on iPad

Bug

Confusing new UI

Bug

Horrid update

Bug

New version doesn't let you search by genre

Bug

New version doesn't let you search by type of item

Bug

App bounces user to multiple other apps

Bug

Forces multiple sign-ins

Bug

Doesn't work in the end

Bug

Completely useless

Bug

Confusing vocabulary

Bug

Counterintuitive product

Bug

Horrible new update

Bug

App is slow

Bug

Cumbersome new version

Bug

Less visually attractive new version

Bug

Missing 'On Order' filter

Bug

Lacks website functionalities

Bug

Awful new version

Bug

Not visual

Bug

Not user friendly

Bug

Worst App ever

Bug

Missing 'Just Ordered' option

Bug

Useless to user

Bug

Landing page shows holds, not borrowed

Bug

Takes long to open Borrowing page

Bug

Real drag to wait every time

Bug

Easier to use browser version

Bug

Black bars on top and bottom of iPhone X screen

Bug

App is adequate at best

Bug

App is unloved compared to website

Bug

Design is outdated

Bug

Keyboard and popup windows target non-Retina devices

Bug

App forced into portrait on iPad

Bug

Cannot be used in landscape on iPad

Bug

Does not scale to iPad screen

Bug

App is almost unusable due to instability

Bug

Very buggy

Bug

Features to refine searches not working

Bug

'Done' button doesn't work for refinements

Bug

'Done' or 'Cancel' button doesn't work for refinements

Bug

'Refine' feature stopped working

Bug

'DONE' button for refining results isn't working

Bug

App looks horrible on an iPad

Bug

App keeps crashing

Bug

App closes within seconds of opening

Bug

App tells user something's on hold when it's not

Bug

Lag with dialogue boxes

Bug

Invalid Patron Access error

Bug

App had a bunch of issues initially

Bug

App won't stay open

Bug

Redirected to mobile website for holds

Bug

Redirected to mobile website for ebooks

Bug

Slow when placing a hold

Bug

Slow when checking account

Bug

Difficulties with logging in/out

Bug

Difficulties with changing accounts

Bug

Can't suggest authors

Bug

Can't recommend other books in a series

Bug

Doesn't mark books read through Overdrive app

Bug

New version is confusing

Bug

New version is slow

Bug

New UI very difficult to use

Bug

Cannot listen to audiobooks through Apple Music

Bug

App gets worse with each update

Bug

Developers lack common sense

Bug

App times out

Bug

Bookshelf features show blank

Bug

Glitching frequently

Bug

Kicks user out

Bug

Won't accept card or passcode

Bug

System errors after login prompts

Bug

Search results blank

Bug

Borrowing tab won't show books

Bug

Opening a book doesn't work

Bug

App crashes when viewing 'For Later' shelf

Bug

App loads website in all views

Bug

Navigation is a mess

Bug

Wasted space

Bug

Hard to find things

Bug

App gets worse with each update

Bug

Developers lack common sense

Bug

Borrowing section takes long to load

Bug

Borrowing section often blank

Bug

App not reliable

Bug

App didn't resize on iPad

Bug

App remains small on iPad

Bug

Confusing new UI

Bug

Horrid update

Bug

New version doesn't let you search by genre

Bug

New version doesn't let you search by type of item

Bug

App bounces user to multiple other apps

Bug

Forces multiple sign-ins

Bug

Doesn't work in the end

Bug

Completely useless

Bug

Confusing vocabulary

Bug

Counterintuitive product

Bug

Horrible new update

Bug

App is slow

Bug

Cumbersome new version

Bug

Less visually attractive new version

Bug

Missing 'On Order' filter

Bug

Lacks website functionalities

Bug

Awful new version

Bug

Not visual

Bug

Not user friendly

Bug

Worst App ever

Bug

Missing 'Just Ordered' option

Bug

Useless to user

Bug

Landing page shows holds, not borrowed

Bug

Takes long to open Borrowing page

Bug

Real drag to wait every time

Bug

Easier to use browser version

Bug

Black bars on top and bottom of iPhone X screen

Bug

App is adequate at best

Bug

App is unloved compared to website

Bug

Design is outdated

Bug

Keyboard and popup windows target non-Retina devices

Bug

App forced into portrait on iPad

Bug

Cannot be used in landscape on iPad

Bug

Does not scale to iPad screen

Bug

App is almost unusable due to instability

Bug

Very buggy

Bug

Features to refine searches not working

Bug

'Done' button doesn't work for refinements

Bug

'Done' or 'Cancel' button doesn't work for refinements

Bug

'Refine' feature stopped working

Bug

'DONE' button for refining results isn't working

Bug

App looks horrible on an iPad

Bug

App keeps crashing

Bug

App closes within seconds of opening

Bug

App tells user something's on hold when it's not

Bug

Lag with dialogue boxes

Bug

Invalid Patron Access error

Bug

App had a bunch of issues initially

Bug

App won't stay open

Bug

Redirected to mobile website for holds

Bug

Redirected to mobile website for ebooks

Bug

Slow when placing a hold

Bug

Slow when checking account

Bug

Difficulties with logging in/out

Bug

Difficulties with changing accounts

Bug

Can't suggest authors

Bug

Can't recommend other books in a series

Bug

Doesn't mark books read through Overdrive app

Bug

New version is confusing

Bug

New version is slow

Bug

New UI very difficult to use

Bug

Requested Features

23 requests

Correct misspellings in search

Feature

Allow less than exact search terms

Feature

Auto-correction in search

Feature

Word suggestion in search

Feature

Dark mode option

Feature

Filter search by genre

Feature

Filter search by subject

Feature

See reviews and comments in app

Feature

Limit search to specific word and exclude derivatives

Feature

Predictive text feature in search

Feature

Add library card to Apple Wallet

Feature

Optimize for iPhone X screen

Feature

Suggest authors, not just books

Feature

Mark books as read through Overdrive app

Feature

Push notifications for holds/due dates

Feature

Account overview/summary screen

Feature

Return 'On Order' filter

Feature

Return 'Just Ordered' filter

Feature

Dark mode

Feature

Advanced search filters

Feature

Improved search functionality

Feature

Better iPad optimization

Feature

Push notifications

Feature

FAQ

What can I do with this library app?

This app allows you to manage your King County Library System account on your mobile device. You can search the library's collection, place holds on items, renew borrowed materials, and save titles you're interested in. It also helps you find library locations and their operating hours.

How do I find books and other items?

You can easily find items in the library's collection by using the search function. The app provides filters to help you narrow down your search results. You can also browse categories like bestsellers and new arrivals, and view recent reader reviews.

Is this app free to use?

Yes, this application is completely free to download and use. There are no charges associated with managing your library account or accessing the app's features.

Can I manage my holds and renewals?

Absolutely. The app makes it simple to place, suspend, activate, and cancel holds on items. You can also renew your borrowed items directly through the app, saving you a trip to the library.

How do I find the nearest library branch?

The app includes a feature to find library locations. It will display the hours for each branch and provide directions to the nearest one, making it convenient to plan your visit.