GAJIX
This sells structure on top of a chat model: it converts 'teach me X' into a syllabus with exercises. At $20 a month it costs the same as a general assistant subscription that can approximate this with a decent prompt, so the value rests entirely on whether you want the scaffolding handed to you.
Pros
- Produces practice projects and thought exercises, not just explanations
- Flat single price with no credit ledger to monitor
- Adjusts pacing based on comprehension checks rather than a fixed track
- Browser-only, nothing to install
Cons
- No company name, jurisdiction or team is disclosed anywhere on the site
- Homepage leans on university and Fortune 500 logos as social proof
- No permanent free tier, only a trial
- No API, no export, no mobile app, no offline access