Is Kindle better than KOReader?

Kindle ranks higher in our list of ebook reader apps (#1 against #4, score 90.0 against 85.0). Kindle is best for: reading books bought from Amazon. KOReader is best for: e-ink devices and many document formats.

Which is cheaper, Kindle or KOReader?

Kindle: Free apps; Kindle books are bought separately. KOReader: Free and open source under AGPL-3.0.

Do Kindle and KOReader run on the same platforms?

Kindle supports iOS, iPadOS, Android, macOS, Windows. KOReader supports Android, Linux.

Kindle vs KOReader: Which Is Better? (2026)

90.0
Editorial score
85.0
5
Platforms
2
Yes
Free to use
Yes
No
Open source
Yes

Which should you choose?

Choose Kindle if you want

Reading books bought from Amazon.

Free apps on iOS, Android, Mac and PC that read the Kindle Store library. Books are bought from Amazon, and the apps are closed source, so the choice suits Amazon customers.

Choose KOReader if you want

E-ink devices and many document formats.

Open-source reader for many formats that runs on Kindle, Kobo, PocketBook, Android and desktop Linux. It reads files you already have, but it does not sell books, so it suits readers who manage their own files.

The main differences

Only KOReader runs on Linux.
Only Kindle runs on Windows.
Only Kindle runs on macOS.
Only Kindle runs on iOS.
KOReader is open source; Kindle is not.

Side by side

	Kindle	KOReader
Score	90.0	85.0
Rank in list	#1 of 10	#4 of 10
Price	FreeFree apps; Kindle books are bought separately	Free and open sourceFree and open source under AGPL-3.0
Free to use	Yes	Yes
Open source	No	Yes
Platforms	iOS, iPadOSAndroidmacOSWindowsiOS, iPadOS, Android, macOS, Windows	AndroidLinuxAndroid, Linux
Made by	Amazon	Not stated
Phone app	Yes	Yes
Best for	Reading books bought from Amazon	E-ink devices and many document formats
Strengths	Free apps on phones, tablets, Mac and PC Built around Amazon's ebook store	Free and open source under AGPL-3.0 Reads EPUB, PDF, MOBI and more Runs on many e-ink readers
Limits	Closed source, so the code cannot be checked Books are tied to Amazon's store	Reads files you already have rather than selling books Works on a narrower set of devices than Kindle
Links	Visit site	Visit site

Questions about Kindle vs KOReader

Is Kindle better than KOReader?: Kindle ranks higher in our list of ebook reader apps (#1 against #4, score 90.0 against 85.0). Kindle is best for: reading books bought from Amazon. KOReader is best for: e-ink devices and many document formats.
Which is cheaper, Kindle or KOReader?: Kindle: Free apps; Kindle books are bought separately. KOReader: Free and open source under AGPL-3.0.
Do Kindle and KOReader run on the same platforms?: Kindle supports iOS, iPadOS, Android, macOS, Windows. KOReader supports Android, Linux.