Command Palette
Search for a command to run...
Khan Academy for iPad
Learn math, biology, chemistry, economics, & more for free [Tech]
verified Jul 16, 2026 · HTTP 200
CohortClass of 2015What it is
Learn math, biology, chemistry, economics, & more for free [Tech]
HTTP liveness
20 probes since Jun 16Jun 16Jul 16
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 16, 2026First probe — liveAlive · 200 OK
Discussion 0 comments
No comments yet. Be the first!
Pulse Indexobserved activity
502/4 signal families
Liveness40%1.00
Press30%no data
GitHub20%no data
Tranco10%0.97
Weighted observed activity · updated Jul 15
Cohort survival · Class of 2015weekly
12,940 products launched in 2015 · 100% still active
12,899 active41 sunset
Still active
100%
Median lifespan
4.9y