5 E-Reader Apps Ranked: Kindle, Kobo, Libby, Scribd (2026)

E-reader apps promise the same outcome from very different business models: a phone or tablet becomes a library, every book travels with you, and reading happens anywhere. Kindle is Amazon's catalog-and-storefront app, the largest ebook ecosystem with deep Kindle device integration. Apple Books ships pre-installed on every iPhone and iPad with iCloud sync and the ePub-friendly Apple Books Store. Kobo is Rakuten's Kindle alternative, popular outside the US with a strong overseas presence and openness toward EPUBs and library files. Libby is OverDrive's free public-library app, where readers borrow ebooks and audiobooks from their local library card with zero monthly cost. Scribd (rebranded Everand in 2024) is the all-you-can-read subscription service bundling ebooks, audiobooks, magazines, and documents for a flat monthly fee. The 1-3 star reviews on iOS and Google Play describe the gap between the reading promise and the daily reality: sync that loses your last-read position, library waitlists 16 weeks long, font rendering that glitches mid-chapter, DRM that strands purchased books when accounts move, and subscriptions that quietly throttle access to popular titles.

We pulled 1-3 star reviews across the 5 most-installed e-reader and reading subscription apps in early 2026. Each app earns its dominant complaint pattern: Kindle for the catalog lock-in and tablet-vs-phone UX inconsistency, Apple Books for the sync reliability and limited annotation export, Kobo for the niche storefront gaps and side-load friction, Libby for the borrowing waitlists and library-system dependence, Scribd/Everand for the catalog rotation and audiobook quality. We separated the breakdown so readers picking by reading habit (one-genre regular, audiobook commuter, library-first borrower, all-you-can-read subscriber, format-agnostic side-loader) can match the app to how they actually consume books, not whichever ecosystem they happened to start on.

This post focuses on consumer e-reader and reading subscription apps. It does not cover academic textbook apps (VitalSource, RedShelf), pay-per-book audiobook apps (covered separately in our audiobook ranking), or specialty comic/manga readers. "E-reader app" here means a mobile app where the primary use case is reading long-form text or listening to long-form audio.

Apps Analyzed

• Kindle: Amazon, largest ebook catalog, $0 to use plus per-book or Kindle Unlimited ($11.99/mo) subscription, deep integration with Kindle e-ink devices and Whispersync audio
• Apple Books: Apple, pre-installed on iOS and macOS, iCloud sync, ePub and PDF support, Apple Books Store with curated catalog smaller than Kindle's
• Kobo: Rakuten, large EPUB-friendly catalog, OverDrive library borrowing built in (legacy integration), Kobo Plus subscription ($9.99/mo) for unlimited access to a subset
• Libby: OverDrive, free borrowing from public libraries, no purchase model, ebooks plus audiobooks, library card required
• Scribd / Everand: Scribd Inc, $11.99/mo all-you-can-access ebooks plus audiobooks plus magazines plus documents, throttles for heavy users on popular titles

Top Complaints Across All E-Reader Apps

Before app-specific patterns, several complaints repeat across every reading app in the 1-3 star review pool.

1. Sync that drops the last-read position. Reviews across all five apps describe the same scenario: read 100 pages on the phone, open the app on the tablet later, find it on page 1 or page 47. Sync recovery is sometimes possible (long-press for "sync to furthest position"), often not. Readers who switch devices mid-book describe this as the most-disruptive bug in the category.

2. Font rendering glitches and accessibility gaps. Reviews describe text that re-flows incorrectly after font-size change, paragraphs that compress to one column on tablet, footnotes that link to the wrong destination, and accessibility settings (dyslexic font, high contrast) that exist in the OS but are not honored by the reading app.

3. Annotation export is locked or limited. Highlighting and note-taking is a key feature for nonfiction readers, but exporting highlights is gated. Reviews describe needing third-party tools (Readwise, Bookcision) to extract annotations from Kindle, hitting export limits in Apple Books, and finding no export at all in Kobo's mobile app.

4. DRM strands books when accounts move. Reviews describe purchased books becoming inaccessible after region switching, account changes, or device upgrades. Recovery requires customer service for some apps and is impossible for others. Readers with 5-10 year purchase histories describe losing access to dozens of books.

5. Reading-position-vs-page-number ambiguity. Reflowable ebooks have no fixed pages. Apps invent "locations," "percentages," or "pages" with inconsistent meaning. Reviews describe book-club confusion (different readers on different apps see different page numbers for the same passage) and citation friction for academic readers.

Kindle: Catalog Lock-In, Tablet-vs-Phone Inconsistency

Kindle is the category default by install base and catalog size. The 1-3 star review pool reflects a mature ecosystem with mature complaints.

Pattern 1: In-app purchase blocked on iOS. Apple's App Store policy blocks Amazon from selling books inside the iOS Kindle app. Reviews describe the friction: tap a book in the catalog, get a "browse the Kindle Store on the web" message with no in-app path. New iOS users describe abandoning Kindle for Apple Books because the purchase flow is broken.

Pattern 2: Tablet UX feels like a stretched phone. Kindle on iPad does not use the larger screen well. Reviews describe single-column reading where two-column would fit, oversized chrome that wastes screen real estate, and library views that show fewer books per row than expected for the screen size.

Pattern 3: Sync occasionally jumps backward. Whispersync usually works, but reviews describe periodic incidents where the position jumps backward 20-50 pages or the audio sync drifts from the text. Recovery is manual.

Pattern 4: Recommendations dominate the home screen. Reviews describe the Kindle library home screen as 70% recommendation slots and 30% your actual library. Finding the book you are currently reading often requires tapping into a sub-tab.

The Kindle positives in 4-5 star reviews: catalog is unmatched, prices are usually the lowest in the category, Whispersync between Kindle device and phone is genuinely useful, Kindle Unlimited is good value for heavy genre readers, dictionary lookup is excellent.

Apple Books: Sync Reliability, Limited Annotation Export

Apple Books is pre-installed on every iOS and macOS device. The 1-3 star review pool reflects an app that benefits from default placement but loses to Kindle on serious-reader features.

Pattern 1: Sync between iCloud devices is mostly reliable but occasionally amnesiac. Reviews describe the typical iCloud-sync pattern: most days fine, some days the position resets or a downloaded book disappears from the library and re-appears days later. The amnesiac states are rare but unsettling.

Pattern 2: Catalog smaller than Kindle on niche genres. Apple Books' catalog is comprehensive for trade fiction and bestsellers and weaker on technical, academic, indie, and back-catalog titles. Reviews from non-bestseller readers describe needing to switch apps to find specific books.

Pattern 3: Annotation export is one-shot. Apple Books lets users export annotations, but the export is per-book and the format (PDF or plain text) is not friendly to Readwise-style ingestion. Power readers describe Apple Books as the wrong choice for note-heavy nonfiction.

Pattern 4: Audiobook handling separate from ebook. Apple sells audiobooks alongside ebooks but does not link them automatically. Reviews describe buying both formats and finding no Whispersync-equivalent that links audio position to text position.

The Apple Books positives in 4-5 star reviews: pre-installed convenience, clean reading UI, EPUB and PDF support out of the box, no extra account needed beyond Apple ID, side-loaded ePubs work without DRM friction, dark mode and font controls are well-designed.

Kobo: EPUB-Friendly, Storefront Gaps Outside Major Markets

Kobo is the strongest non-Amazon non-Apple option, especially outside the US. Reviews reflect a polished app held back by catalog and storefront issues.

Pattern 1: Catalog gaps relative to Kindle in the US. Kobo's catalog is competitive in Canada, UK, Australia, and parts of Europe. In the US, reviews describe specific titles that are on Kindle but not Kobo, and prices that are higher than Amazon's on overlapping titles.

Pattern 2: Side-load friction on iOS. Kobo is more EPUB-friendly than Kindle, but iOS still requires desktop-to-cloud workflows for side-loading. Reviews describe Kobo's mobile-first promise breaking down when users try to import a non-Kobo-purchased EPUB.

Pattern 3: OverDrive integration is legacy and limited. Kobo had built-in library borrowing through OverDrive's API, but the experience is not at parity with the dedicated Libby app. Reviews describe the in-Kobo library flow as outdated and recommend using Libby separately and exporting to Kobo when possible.

Pattern 4: Kobo Plus catalog rotation. Kobo Plus ($9.99/mo) is Kobo's all-you-can-read subscription. Reviews describe the catalog rotating titles in and out, with books available at sign-up disappearing weeks later, and the search UI not always indicating which titles are subscription-included versus purchase-only.

The Kobo positives in 4-5 star reviews: strongest non-Amazon catalog, EPUB native and DRM-free imports work cleanly on the Kobo e-reader hardware, polished reading UI on tablet and phone, no Kindle-style recommendation clutter on the home screen, strong dictionary and translation tools.

Libby: Borrowing Waitlists, Library-System Dependence

Libby is the only fully free option in the comparison, funded by public libraries via OverDrive. The 1-3 star review pool reflects the borrowing model's structural friction.

Pattern 1: Long waitlists on popular titles. Reviews describe placing holds on bestsellers and waiting 8-16 weeks to borrow. The library system buys a limited number of digital copies, and the borrow queue moves at the pace of returns. Readers who want a book now describe Libby as unsuitable.

Pattern 2: Library card requirement and renewal friction. Libby requires a working public library card. Reviews describe accounts going inactive after card expiration, library moves between systems requiring re-authentication, and out-of-state users without local cards being unable to use the app.

Pattern 3: Borrow durations are limited. Standard ebook borrows are 14-21 days. Reviews from slow readers describe finishing partial books and needing to re-borrow (sometimes re-queueing). Renewals are sometimes auto-granted, sometimes blocked if another patron has placed a hold.

Pattern 4: Audiobook download size and offline behavior. Libby's audiobooks can be 1-2 GB each. Reviews describe storage pressure on smaller devices and offline-mode failures where downloaded audiobooks would not play without network.

The Libby positives in 4-5 star reviews: completely free, supports your local library, broad catalog across libraries (some libraries share consortiums), audiobook quality is good, no advertising or recommendation clutter, "skip the line" feature for short borrows on popular titles is genuinely useful when available.

Scribd / Everand: Catalog Rotation, Audiobook Quality Mixed

Scribd rebranded to Everand in 2024 (the Scribd brand still appears in stores). The 1-3 star review pool reflects a subscription model that bundles ebooks, audiobooks, magazines, and documents for a flat fee.

Pattern 1: Throttling on heavy use. Reviews describe Everand throttling access to popular titles after a user has consumed several premium audiobooks or ebooks in a month. The throttle removes specific high-cost titles from the user's catalog view until the next billing cycle. The behavior is not prominently disclosed and feels deceptive when discovered mid-month.

Pattern 2: Catalog rotates without notice. Books in your "saved" list disappear without warning when titles leave the subscription. Reviews describe building a 50-book reading queue and finding 10 books gone weeks later. The Apple Books and Kindle owned-purchase model does not have this issue; subscription readers describe Everand as renting, not owning.

Pattern 3: Audiobook narrator quality varies. Everand includes audiobooks but reviews describe inconsistent narrator quality, especially on midlist and indie titles. Compared to Audible's curation, Everand's audiobook layer feels less editorially controlled.

Pattern 4: Magazine and document layer feels secondary. Everand's value-prop includes magazines and uploaded documents, but reviews describe the magazine reader as functional-not-great and the document layer as a graveyard of low-quality user uploads.

The Everand positives in 4-5 star reviews: $11.99/mo for ebooks plus audiobooks is good value if you read 2+ books per month, no per-book purchase decisions reduce friction, magazine layer is a nice extra for casual reading, the app's reading UI is clean.

Picking by Reading Habit

One-genre regular (romance, mystery, sci-fi): Kindle Unlimited is the best value. Catalog depth and the subscription's genre breadth are unmatched. Kobo Plus is the alternative outside the US.

Audiobook commuter: Audible (covered separately) is the category default for audiobook depth. Libby is the free alternative if your library has good audiobook holdings. Everand bundles audiobook with ebook for a flat fee.

Library-first borrower: Libby. No competitor is free, and the catalog from a strong library system rivals paid services. Combine with Kobo for purchase-fill on titles your library does not have.

All-you-can-read subscriber: Kindle Unlimited (catalog depth) or Everand (catalog breadth across formats). Both throttle in different ways; pick by what you read most.

Format-agnostic side-loader (you have your own EPUBs): Apple Books for iOS-only reading or Kobo for cross-platform. Kindle requires conversion to Amazon's format, which adds friction.

Note-heavy nonfiction reader: Kindle with Readwise integration is the best-supported workflow. Apple Books works but exports are clunky. Kobo annotation export is limited.

How to De-Risk an E-Reader Purchase

Across all five apps, a few practices reduce 1-3 star outcomes:

• Try a free borrow before subscribing. Libby is free; use it to test reading habits before committing to a $10-15/mo subscription. Some libraries share OverDrive consortiums, multiplying catalog access.

• Verify catalog before subscribing. Search for 10-15 books you want to read in the next 6 months. If the app you are evaluating has fewer than 8-10 of them, the subscription will not match your usage.

• Check sync reliability with one book on two devices. Read 30 pages on the phone, switch to tablet, verify position lands within 1-2 pages. If sync fails on the test, expect it to fail mid-trip.

• Export your annotation strategy. If you take notes, verify the app's annotation export works (Kindle to Readwise is the gold standard) before committing your reading workflow.

• Plan for DRM lock-in. Books purchased in Kindle, Apple Books, or Kobo are DRM-locked to the platform. Switching ecosystems means rebuying. Side-load DRM-free EPUBs when available to preserve format ownership.

Bottom Line

Kindle is the right pick for catalog-driven readers who accept Amazon's lock-in and use Whispersync between e-reader and phone, the wrong pick for iOS-first users frustrated by the in-app purchase block or readers who want a recommendation-free home screen. Apple Books is the right pick for casual iOS readers who value pre-installed convenience and DRM-free EPUB side-loading, the wrong pick for serious annotation workflows or niche-genre readers needing Kindle-depth catalog. Kobo is the right pick for non-US readers, EPUB enthusiasts, and Kindle alternatives, the wrong pick for US-only readers needing Amazon's specific catalog or library-first borrowers expecting parity with Libby. Libby is the right pick for any reader with a library card who can wait through borrowing queues and accepts library-system dependence, the wrong pick for impatient readers needing immediate access to bestsellers. Scribd / Everand is the right pick for cross-format flat-fee subscribers who read 2+ books per month across ebook plus audiobook plus magazine, the wrong pick for users wanting permanent ownership or readers who hit the subscription throttle on popular titles.

Before paying for any e-reader subscription, read the most recent 1-3 star reviews on Unstar.app for the specific app and check for clusters around your platform, your reading volume, and your annotation needs. Those clusters tell you whether the app actually fits how you read, not just how the App Store positions it.

Related reading: Audible vs Spotify vs Libby vs Kindle: Audiobook Apps Ranked covers the audiobook half of the reading category in deeper detail. Productivity App Reviews: What Power Users Complain About covers adjacent apps where annotation export and cross-device sync issues mirror e-reader pain points. Subscription App Reviews: How to Reduce Cancellations covers the broader subscription pricing patterns that govern Kindle Unlimited and Everand pricing decisions.