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Stairway for iOS
Stairway is a free educational app that makes learning mathematics and science concepts accessible and engaging for iOS users anywhere
since Jun 16, 2026 · HTTP 404
CohortClass of 2026What it is
Stairway is a free educational app that makes learning mathematics and science concepts accessible and engaging for iOS users anywhere. With over 500 lessons covering fundamental to advanced topics, it provides flexible self-paced education without cost barriers.
HTTP liveness
8 probes since Jun 16Jun 16Jul 15
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jul 15, 2026Went darkDead · 404
- Jul 4, 2026Probe inconclusiveTimeout
- Jun 20, 2026Went darkDead · 404
- Jun 19, 2026Probe inconclusiveUnknown
- Jun 16, 2026First probe — downDead · 404
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Pulse Indexobserved activity
8 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2026weekly
567 products launched in 2026 · 100% still active
567 active0 sunset
Still active
100%
Median lifespan
4.9y