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Harken
✓ verifiedFreemium
Tracks Spotify playlists and restores songs removed from auto-updating 'Made for You' mixes, with daily change reports.
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Duck.ai
✓ verifiedFree
Free, privacy-focused AI chat from DuckDuckGo offering anonymous access to popular chat models without saving conversations.
19M visits/mo
Pricing
Free: $0 (track 5 playlists)
No public pricing
No public pricing
Core features
- ✦Playlist change tracking
- ✦Restore previous playlist versions
- ✦Daily additions/removals report
- ✦Track up to 5 playlists (free plan)
- ✦Planned playlist analytics
- ✦Free AI chat
- ✦Anonymous, privacy-preserving access
- ✦Choice of popular chat models
- ✦No conversation logging or training use
- ✦Video lessons
- ✦Revision notes
- ✦Quizzes
- ✦Flashcards
- ✦Exam-style questions
- ✦Past papers
Use cases
- →Recovering lost Spotify songs
- →Monitoring playlist changes
- →Restoring old playlist versions
- →Chatting with AI privately
- →Quick answers without an account
- →Using multiple AI models anonymously
- →Preparing for Maths and Science exams at KS3, GCSE, and A-Level.
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