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📅 Development History

PDF Reader Pro Edition®

by iTECH DEVELOPMENT SYSTEMS INC. · Business · View full /p/ profile →

📊 Tracking summary

Tracked since
2014-09-30
109 snapshots captured
Events detected
16
cause-and-effect changes
App Store rating
3.90★
1,720 ratings from App Store
Current revenue
$27.2K /mo
Estimated or reported monthly revenue

📈 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.

25 1,732 2014-09-30 2026-09-17 ⭐ 💲 ⭐ 📈 📈 📈 📈 📈 ⭐ 📈 🚀 📈 ⭐ ⭐ 🚀 ⭐

📅 What Worked™ · full timeline (16 events)

Every detected change in PDF Reader Pro Edition® 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
⭐
Rating ↑ 3.90 → 4.39 (improved 0.49★)
→ 30 days after:
2026-05
💲
Went paid — introduced $1.99 price point
→ 30 days after:
2026-03
⭐
Rating ↑ 3.48 → 3.90 (improved 0.42★)
→ 30 days after:
2026-03
📈
Crossed 1,000 ratings — social-proof flywheel kicking in
→ 30 days after:
2025-11
📈
Crossed 500 ratings — social-proof flywheel kicking in
→ 30 days after:
2015-03
📈
Crossed 100 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$154/mo · reviews +10 high confidence
2015-03
📈
Crossed 100 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$93/mo · reviews +6 high confidence
2014-10
📈
Crossed 50 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$253/mo · rating +0.13★ · reviews +16 medium confidence
2014-10
⭐
Rating ↑ 2.24 → 3.38 (improved 1.14★)
→ 30 days after: revenue +$253/mo · rating +0.13★ · reviews +16 medium confidence
2014-10
📈
Crossed 50 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$696/mo · rating +1.27★ · reviews +43 medium confidence
2014-09
🚀
First tracked snapshot — initial data captured
→ 30 days after: revenue +$443/mo · rating +1.14★ · reviews +27 medium confidence
2014-09
📈
Crossed 10 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$443/mo · rating +1.14★ · reviews +27 low confidence
2014-09
⭐
Rating ↓ 2.75 → 2.40 (dropped 0.35★)
→ 30 days after: revenue +$443/mo · rating +1.14★ · reviews +27 low confidence
2014-09
⭐
Rating ↓ 3.33 → 2.75 (dropped 0.58★)
→ 30 days after: revenue +$443/mo · rating +1.14★ · reviews +27 low confidence
2014-09
🚀
First tracked snapshot — initial data captured
→ 30 days after: revenue +$443/mo · rating +1.14★ · reviews +27 low confidence
2014-09
⭐
Rating ↓ 5.00 → 3.50 (dropped 1.50★)
→ 30 days after: revenue +$443/mo · rating +1.14★ · reviews +27 low confidence

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