2026-05
⭐
Rating ↓ 5.00 → 3.04 (dropped 1.96★)
→ 30 days after:
📊 Tracking summary
Tracked since
2012-04-30
Events detected
13
Current rating
3.04★
Current revenue
$32.0K
/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 (13 events)
Every detected change in Free Books - 23,469 Classics For Less Than A Cup Of Coffee. An Extensive Ebooks And Audiobooks Library 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.
2026-05
💲
Went paid — introduced $0.99 price point
→ 30 days after:
2026-03
⭐
Rating ↑ 4.20 → 5.00 (improved 0.80★)
→ 30 days after:
2024-11
📈
Crossed 500 ratings — social-proof flywheel kicking in
→ 30 days after:
2012-06
📈
Crossed 100 ratings — social-proof flywheel kicking in
→ 30 days after:
revenue +$16.9K/mo · rating +0.09★ · reviews +46
high confidence
2012-06
📈
Crossed 100 ratings — social-proof flywheel kicking in
→ 30 days after:
revenue +$15.9K/mo · reviews +44
high confidence
2012-05
📈
Crossed 50 ratings — social-proof flywheel kicking in
→ 30 days after:
revenue +$15.9K/mo · reviews +44
high confidence
2012-05
⭐
Rating ↓ 4.79 → 4.43 (dropped 0.36★)
→ 30 days after:
revenue +$15.9K/mo · reviews +44
high confidence
2012-05
📈
Crossed 50 ratings — social-proof flywheel kicking in
→ 30 days after:
revenue +$22.6K/mo · rating −0.36★ · reviews +63
high confidence
2012-04
🚀
First tracked snapshot — initial data captured
→ 30 days after:
revenue +$22.6K/mo · rating −0.36★ · reviews +63
low confidence
2012-04
📈
Crossed 10 ratings — social-proof flywheel kicking in
→ 30 days after:
revenue +$22.6K/mo · rating −0.36★ · reviews +63
low confidence
2012-04
🚀
First tracked snapshot — initial data captured
→ 30 days after:
revenue +$22.6K/mo · rating −0.36★ · reviews +63
medium confidence
2012-04
⭐
Rating ↓ 5.00 → 4.50 (dropped 0.50★)
→ 30 days after:
revenue +$22.6K/mo · rating −0.36★ · reviews +63
medium confidence
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