The Accuracy Index
A sighting rate you can actually trust.
Anyone can claim a perfect record after one lucky trip. The Accuracy Index won’t let them. Here’s exactly how the numbers are built — and why being honest about what we don’t know is the whole product.
Two-sided proof
Every sighting on Lyferr is backed by evidence from both sides — the guide’s geotagged, timestamped photo and the traveler’s own confirmation. Neither side can fake it alone.
We cross-check every claim against eBird, GBIF, and iNaturalist occurrence data, so a species claimed where or when it doesn’t occur gets flagged automatically.
Found on 47 of 52 trips · 90% (range 79%–96%)
The denominator (52 trips) and the confidence range are always shown. We never publish a bare percentage.
Then we do the honest math.
We rank by the Wilson lower bound of each rate, not the headline number. That keeps small samples humble: a brand-new guide can’t leap to the top on a single lucky outing. Below about ten trips we lead with the raw count and label it early data.
“A guide at 1-for-1 won’t outrank one at 47-for-52.”
The three tiers
Every rate carries a tier so you always know how much to trust it. The tiers are colour-coded — and never red. We’re honest, not alarmist.
- Verified
- Every sighting is backed by two-sided proof and cross-checked against occurrence data. The strongest signal we publish.
- Reported
- Guide-reported and plausible, but not yet corroborated by two-sided proof. Our launch guides are seeded at this tier.
- Unverified
- Early or thin data, shown honestly and kept off by default — never mixed in as if it were proven.
Questions about the numbers
Ready to put it to work? Search a species →
No guide guarantees a wild animal. These are verified track records, shown to improve your odds — not to promise an outcome.