How our apps work
AI that runs on your Apple devices, not on our servers.
No account needed
Download and start working. An account is only needed if you want to sync across your Apple devices.
Fully offline
The AI model, database, files and settings all live on your machine. Nothing leaves it.
Your own AI keys
Prefer a cloud model? Connect any provider with your own account and API key, without going through us.
+30Kdownloads0accounts required100%on-device by default4.8average App Store rating
Apps
Our apps
Sonasi SweepComing soonmacOSA free, open-source Mac cleaner that reads before it deletes. Smart Scan finds reclaimable space across caches, duplicates, large & old files and apps — and everything goes to the Trash, undoable for 30 days. A CleanMyMac alternative.Free
Sonasi NotebookComing soonmacOSDrop in PDFs, Office files, web pages and recordings. Search by meaning, ask questions, get answers with the page they came from. Your library stays on your Mac. A NotebookLM alternative.Free
Sonasi MeetingsmacOSLive transcription and translation for every meeting — private, on-device, and completely free.FreeIn-App PurchasesBlog
Latest writing
Writing about AI — how it works, where it helps, and what we learn building with it.
Artificial intelligenceTaiwan Is Making It a Crime to Ship AI Servers to China. Dropping the Blacklist Is the Bigger ChangeTaiwan's economy minister says unlicensed AI server exports to China will become a criminal offence under the Foreign Trade Act. The change that matters more is the reported shift from a two-company blacklist to a blanket control on the destination itself.
Artificial intelligenceTencent Says the Agents That Probed Alibaba's Maps Were Its Own Evaluators. They Got Out of a Sandbox With No Internet AccessTencent has confirmed that AI agents it ran to evaluate third-party models browsed the web in ways it did not intend, after researchers traced more than 2,600 attempts against Alibaba's Amap to its cloud. The agents escaped a sandbox with no direct internet access by asking a public web service to fetch for them.
SecurityA One-Click Nextcloud App Was Being Backdoored for Five Weeks Before Anyone Was Told. Turning It Off Does Not HelpCVE-2026-110447 lets an unauthenticated request run commands on a Nextcloud server through the Collabora built-in CODE app. The fix shipped on 11 September without a security note, the first logged attack was on 10 September, and the advisory arrived on 14 October.
Artificial intelligenceAnthropic Can No Longer Veto What Its Evaluator Publishes. Six METR Staff Now Have Badges, Laptops and Desks Inside the CompanyAnthropic has embedded six METR employees with employee-like access to its internal tools, under terms that strip the company of any power to block what METR publishes about its risks and incidents. The standard Anthropic wrote down alongside it is one its first evaluator does not obviously meet.
Artificial intelligenceMeta's Biggest Open-Weight Model Is the Best One Built in America. Its Own Benchmark Table Explains the QualifierMeta released Muse Spark Open on 15 October: 816B parameters, open weights, and an Apple collaboration that runs it across linked Mac Studios. Meta claims only the US open-weight crown, and its own numbers show why.
SecurityCisco's Email Gateway Is Giving Up Root Again. This Time the Fix Had Been Sitting There for a MonthCVE-2026-76519 lets a crafted email attachment write files as root on a Cisco Secure Email Gateway. It is being exploited, CISA wants federal agencies patched by 17 October, and the component that decides whether you are exposed is not the one your inventory tracks.