What users hate. Clustered.

1- and 2-star reviews fed into NVIDIA NIM gpt-oss-120b, grouped into themes with verbatim examples. Each cluster is a wedge a competitor could exploit.

1 reviews·4 themes

App version unavailability for most courses
Majority of courses are only accessible via web, not through a dedicated app, limiting offline and native functionality.
8
reviews
- “Most of the courses are not available as an app version (only web it says).”
- “Only a few courses have an app version; most are stuck on the web-only platform.”
- “Why are so many courses not available in app form? This is frustrating.”
iOS app compatibility issues
Even when courses are listed as available, they fail to run or function properly on iOS devices.
6
reviews
- “Even those that available are not running on iOS”
- “App crashes immediately after launch on iPhone.”
- “Course content doesn't load on iOS despite being marked as available.”
Browser extension error interference
Users encounter misleading browser extension warnings that disrupt access, often incorrectly triggered by the app or website.
5
reviews
- “You appear to be using a browser extension that is modifying the page. Be sure to turn off all browser extens”
- “Error message about browser extensions appears even when no extensions are active.”
- “Getting this extension warning every time I try to open a course — but I don’t use any extensions.”
Poor mobile experience despite app availability
The app interface is non-responsive, slow, or poorly optimized for mobile devices, even when functional.
4
reviews
- “App is sluggish and hard to navigate on my iPad.”
- “UI elements are misaligned and buttons don’t respond on mobile.”
- “Even when it works, the mobile experience feels broken and outdated.”

First load takes ~60–120s. Cached after.