Apple acquires observability startup SigScalr, maker of open-source tool SigLens
What's the deal? Apple has acquired "certain assets of SigScalrDealroom has a profile for this one. Try Dealroom →, Inc." along with the option to hire certain employees, according to a European Union filing. SigScalr makes SigLens, a tool that monitors and debugs large numbers of interrelated applications.
Why now? The deal was reported to the European Union on March 12, 2026, but only surfaced publicly in July 2026. Under the Digital Markets Act, firms such as Apple must report large or significant acquisitions, and the EU publishes a summary no sooner than four months after notification.
What does SigScalr do? Application monitors like SigLens track and log what happens inside several apps at once, or across many routines within one — replacing multiple programs from Xcode to Activity Monitor. SigScalr claimed SigLens was up to 100% more efficient than rivals DataDog and Splunk.
Who's behind it? Founded in May 2021 by Kunal NawaleDealroom has a profile for this one. Try Dealroom →, a former Salesforce principal engineer and software architect, the company is based in Nashua, New Hampshire, with ties to California, Montana, and India. It had between two and 10 employees.
SigScalr spent three years in stealth, raised $1.76 million in a 2024 pre-seed round, and released SigLens as open source on February 20, 2024.
What's the endgame? Neither company has said what happens next, and SigScalr's website is down. The code remains on GitHub but has not been updated since July 2025. If SigLens folds into Xcode, it would follow Apple's June 2026 purchase of Swift tool Play.
What could go wrong? With the website gone and the code untouched for a year, the future of SigLens as a standalone product is unclear. As an asset deal, Apple bought the technology and the option to hire staff — not the company outright.
The signal: Apple is steadily buying up developer tooling to strengthen its own ecosystem. As vibe coding produces routines no developer wrote or documented, detailed monitoring tools like SigLens grow more useful — and more attractive to acquire.
Read more: AppleInsider
