2026-05
🔄
Monetization changed: freemium → free
📊 Tracking summary
Tracked since
2021-11-04
Events detected
8
Current rating
4.77★
Current revenue
$19.0K
/mo
📈 Reviews growth with event markers
Cumulative review count over time. Each marker (🚀⭐💲🔄🔧📈📊📦) is a detected event — click anything in the timeline below to scroll to its row.
📅 What Worked™ · full timeline (8 events)
Every detected change in edX: Courses by Harvard & MIT since we started tracking. Each event shows the cause (what changed) and effect (measured impact over 30 days after). Confidence chip flags whether the attribution is clean or muddied by co-occurring events.
2026-03
📈
Crossed 1,000 ratings — social-proof flywheel kicking in
2026-02
📈
Crossed 500 ratings — social-proof flywheel kicking in
2022-07
📈
Crossed 100 ratings — social-proof flywheel kicking in
2022-01
📈
Crossed 50 ratings — social-proof flywheel kicking in
2021-11
⭐
Rating ↓ 5.00 → 4.60 (dropped 0.40★)
2021-11
📈
Crossed 10 ratings — social-proof flywheel kicking in
2021-11
🚀
First tracked snapshot — initial data captured
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