2026-05
⭐
Rating ↓ 4.70 → 4.20 (dropped 0.50★)
📊 Tracking summary
Tracked since
2015-06-16
Events detected
11
Current rating
4.20★
Current revenue
$14.0K
/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 (11 events)
Every detected change in EPUB Reader - Reader for epub format 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
📈
Crossed 100 ratings — social-proof flywheel kicking in
2026-05
🔄
Monetization changed: freemium → free
2026-03
⭐
Rating ↑ 3.67 → 4.70 (improved 1.03★)
2018-04
📈
Crossed 100 ratings — social-proof flywheel kicking in
2017-02
📈
Crossed 50 ratings — social-proof flywheel kicking in
2015-09
📈
Crossed 10 ratings — social-proof flywheel kicking in
2015-07
⭐
Rating ↑ 2.25 → 2.80 (improved 0.55★)
2015-07
⭐
Rating ↑ 1.33 → 2.25 (improved 0.92★)
2015-07
⭐
Rating ↑ 1.00 → 1.33 (improved 0.33★)
2015-06
🚀
First tracked snapshot — initial data captured
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