Whistle
The recorded URL now redirects offsite — often an acquisition, rebrand, or wind-down; the destination is recorded in the telemetry below. Pulse has been flat over the last 30 days.
HTTP liveness
realSignal telemetry
4 families · 2 observed · observed onlytractive.comedge
direct originserver
nginxTranco rank
#386,545
Analyst read
generated from the observed metrics above · no external narrativeWhistle's listed URL redirected off its original domain (to https://tractive.com/) when we last probed it on Aug 27, 2026 — we mark it redirected, not dead. Its Pulse Index is 21.3 of 100, built from 2 of 4 observed signal families. Observed footprint: 6 functional tags. It sits on the competitive-alternatives graph with 2 linked rivals, so the comparable set below leans on curated edges.
Comparable set
curated alternatives → functional tag-similarity| Company | Basis | Overlap | Pulse | 30d Δ | Status |
|---|---|---|---|---|---|
| Ambi Climatehardware | similar | 100% | 8.0 | 0.0 | — unverified |
| Tracy Trackershardware | similar | 100% | 8.0 | 0.0 | — unverified |
| CubeSensors Sleephealth | tag-overlap | 86% | 16.0 | +8.0 | → redirected |
| Pawlyhardware | similar | 86% | 40.0 | 0.0 | ● live |
| Tractivehardware | similar | 86% | 48.8 | 0.0 | ● live |
| WhistleGPShardware | similar | 86% | 21.3 | 0.0 | → redirected |
| WHOOP Strap 3.0hardware | similar | 86% | 17.4 | -32.0 | — unverified |
| Whistle 3 pet trackerhardware | similar | 86% | 21.3 | 0.0 | → redirected |
Confidence reflects source and category coherence: curated = an editorially linked alternative; similar = strong functional tag-overlap in the same category; tag-overlap = shared tags only and may be noisy. Overlap is the shared functional-tag ratio (Jaccard) for tag-matched rows. Pulse is the observed-activity index real and 30d Δ its signed month change; a dash means insufficient observed history, never zero.
Structure
observed attributesFunding & team
not in sourceNo disclosed funding in our sources. Funding data covers only ~1% of the corpus (462 rounds across 79K products), so absence here is unknown, not zero— we don't estimate a number we can't source.