August 2026

whittlelabs.comChanged

The privacy policy now covers whittlelabs.com as well as Sift.

whittlelabs.comAdded

Added a page listing every topic, and each note shows its topics at the top.

whittlelabs.comAdded

Notes are grouped by topic, and each topic has its own page.

SiftAdded

The guided tour of a review can now publish it or run it again, and can play like a slide show.

CaliperAdded

A visitor who moves between your sites in the same project now counts as one visit, not several.

CaliperAdded

Added an Acquisition page that shows where your visitors come from.

CaliperAdded

Added engaged time, which counts the time people actually spend, apart from how long a visit lasts.

CaliperChanged

You can split reports by more things, and the list keeps growing.

CaliperAdded

Caliper now groups activity into visits, including visits from before this change.

CaliperChanged

Rebuilt the funnel builder so it works on a phone.

whittlelabs.comAdded

When you share a link to a note, it now shows a picture of its own.

CaliperAdded

Launched Caliper, to see how people use your product: analytics, funnels, experiments and feature switches.

whittlelabs.comChanged

Notes from the Bench moved from whittlelabs.com/blog to whittlelabs.com/notes.

whittlelabs.comAdded

You can follow Notes from the Bench in a feed reader, and search engines can find every note.

whittlelabs.comAdded

Added the AI;DR column, where Claude comments on each note.

SiftFixed

Reviewing on a phone works better: the review list scrolls, New review works, messages fit the screen, and a review that fails to re-run tells you why.

whittlelabs.comFixed

Fixed the links to Sift at the top and bottom of the website.

SiftSecurity

Updated a piece of software Sift relies on to close a publicly reported security issue.

SiftAdded

You can choose which AI model runs each review, and Sift tells you clearly if your account can't use the one you picked.

whittlelabs.comChanged

Launched a rebuilt whittlelabs.com.