App Store: What Users Actually Complain About
Overview
The most prevalent pain points relate to library organization, highlighting functionality, reading streak tracking, app performance, and navigation issues. Users are particularly frustrated by stability problems and data loss concerns, which are rated as high severity issues.
Top complaints
1. Library Browsing and Organization Issues
cluster 1/10Users struggle with finding and organizing books in their library, with poor search functionality and lack of organization options.
“VERY difficult to search my library unless I know exactly what I'm looking for. There's no "browsing" option.”
“It is hard now to scroll down through the books in my library and find the ones I've bought but haven't read yet.”
2. Highlighting and Note-Taking Problems
cluster 2/10Users face difficulties with the highlighting interface, color selection, and note-taking functionality.
“There's an unnecessary double hop to highlight. Underline a passage -> get popup to select highlighting -> Then there's”
“They've made highlighting available in five colors, but removed Blue, and made it so you have to move the color bar to a”
3. Reading Streak Tracking Issues
cluster 3/10Users experience problems with reading streak tracking due to timezone discrepancies and sync issues.
“Because the app doesn't go by the time zone I'm in, there have been days where the app didn't think I read.”
“Every time it happens, I lose my reading streak. It's super annoying, and disheartening.”
4. App Performance and Stability
cluster 4/10Users report slow performance, battery drain, frequent crashes, and loading issues.
“It is very slow, and it heats up my device and drains my battery. I must often reinstall it.”
“The app will freeze, crash, or takes forever to sync the information from my Kindle.”
5. Navigation and Interface Problems
cluster 5/10Users face difficulties with menu navigation, cluttered UI, and unwanted interface changes.
“The only time I seem to have any luck is at the beginning of any chapter. Other than that, reading is fine.”
“all of the updates to "add new features" have really made the app very glitchy”
6. Content Display and Formatting Issues
cluster 6/10Users experience problems with page display, file formatting, and page number inconsistencies.
“I need to see 2 pages at a time to hit phrases that cross a page. No can do in Kindle for Mac or Ipad.”
“The files I'm sending to my kindle have terrible formatting on the kindle app after sending them any other way besides m”
7. Sync and Data Management Problems
cluster 7/10Users encounter issues with syncing across devices, missing books, and offline functionality.
“I open the app and it takes forever to load if it even does load. I can no longer get back to my kindle unlimited books.”
“****FREE BOOKS ARE MISSING**** NONE - and I do mean NONE - appear in my library.”
8. Recommendation and Discovery Issues
cluster 8/10Users find the recommendation system lacking and face difficulties with book discovery.
“The recommendations are lacking. It seems to suggest the books that it wants and not ones related or in theme with my bo”
9. Text-to-Speech and Audiobook Problems
cluster 9/10Users experience issues with text-to-speech functionality and audiobook synchronization.
“The reader will sometimes stop speaking in the middle of a page for no clear reason”
“I can't change the audiobook that the book wants to be synced with. This bothers me immensely.”
10. UI/UX Annoyances
cluster 10/10Users are frustrated with popup interference, home screen changes, and default settings.
“Instead of showing me my books it puts me on their new Home screen. It is nothing more than a way to try to sell me more”
“There are now over 30 pop-up descriptions of books! It's impossible to close them.”
More Reading pain reports
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This page is rendered from the App Pain API — the same clusters, evidence quotes, and severity scores are available as JSON (or via MCP for AI agents) for any app on both stores.
Read the API docs Get a free API keyBuilt from public app-store reviews · not affiliated with Apple or Google · clusters are LLM-generated from real user quotes.