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![Kalkul [proto]Type 1](https://ph-files.imgix.net/21d3e06d-f9f4-449e-ada9-db55c2ccfab0.jpeg?auto=format)
Kalkul [proto]Type 1
Synthetic Reality prototypes — New [proto]type of earphone technology designed for noisy dense urban environments to control and expand your reality
verified Jul 13, 2026 · HTTP 200
CohortClass of 2017What it is
Synthetic Reality prototypes — New [proto]type of earphone technology designed for noisy dense urban environments to control and expand your reality. [Augmented Reality, Tech]
HTTP liveness
11 probes since Jun 12Jun 12Jul 13
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 12, 2026First probe — liveAlive · 200 OK
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Pulse Indexobserved activity
11 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2017weekly
13,497 products launched in 2017 · 100% still active
13,462 active35 sunset
Still active
100%
Median lifespan
4.9y