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Chain
Chain is a social productivity app designed to help users establish and maintain habits while connecting with a supportive community
since Jun 16, 2026 · HTTP 404
CohortClass of 2026What it is
Chain is a social productivity app designed to help users establish and maintain habits while connecting with a supportive community. The platform combines habit tracking with social features to create accountability partnerships and shared progress visibility. Users can document their habit journeys and draw motivation from others pursuing similar goals.
HTTP liveness
9 probes since Jun 16Jun 16Jul 13
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 21, 2026Went darkDead · 404
- Jun 20, 2026Probe inconclusiveUnknown
- Jun 16, 2026First probe — downDead · 404
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Pulse Indexobserved activity
9 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