An index of your material
Cairn indexes files on the Mac and connected tools. Slack and Notion are the connections the product names.
Native Mac app
Cairn
Ask your files. Every sentence comes back with a citation.
Requires macOS 26Release notesTrial length: not setDownload size: not set
The download link is not published yet.
Checkout is not open yet. The Lemon Squeezy store and variant id still need to be set.
- Mac-first design
- Private by design
- Support from the founders
- Money-back guaranteeNot confirmed
- Notarized by AppleNot confirmed
Cairn is a private on-device knowledge assistant for macOS 26, with Liquid Glass. It indexes your files and the tools you connect, including Slack and Notion. Answers carry a citation on every sentence, plus source age and confidence. Conflicting sources are flagged. A knowledge health report covers duplicates and outdated docs. Answers can be marked verified. Actions wait for your approval. You can summon Cairn from anywhere.
Cited sentence
SourceAgeConfidence
What it does
A citation on every sentence
Each sentence points at a source. You can open that source instead of trusting the prose alone.
Age, confidence, conflicts
Source age and a confidence indication sit with the citation. If sources disagree, Cairn flags the conflict.
Knowledge health
A report for duplicates and outdated docs in the index. It is a list to read, not an automatic delete.
Verified answers
An answer can be marked verified. The citation is still what you check.
Approval, and summon
Actions are approval-gated. You can summon Cairn from anywhere you are working, instead of hunting for a window.
A question, in order
Let it index
Point Cairn at the files you want included, and connect Slack or Notion if those are part of the corpus.
Ask, then open the citation
Every sentence has one. Source age tells you whether the document is old. Confidence tells you to slow down when the support is weaker.
Read a conflict if it is flagged
Two sources can disagree. The flag is there so the assistant does not pick one in silence.
Approve any action
If you ask Cairn to do something, it waits for approval. The knowledge health report is where duplicates and outdated docs are listed for you to judge.
What you can count on
Five promises about the apps and the studio. They are not reviews, ratings, or a claim about how many people use the software.
On your Mac
Murmur transcribes on the Mac. Cairn works with local files and the services you choose to connect. Disk Housekeeper previews disk changes. Errand connects to work accounts only when you configure them, and AutomatorAI works on folders you select.
PrivacyRefunds
For a purchase issue, contact us with the app name and order reference. The checkout provider shown at purchase handles the payment and any approved refund. A refund period will be stated only when confirmed.
Refund policyWrite to the founder
Support goes to Harish Ganapathi, co-founder, at harishganapathi@sevenhillshq.com. You are not writing to a rating, a forum, or a download counter.
ContactNative Mac software
Disk Housekeeper, Murmur, Cairn, and Errand target macOS 26. AutomatorAI currently targets macOS 14 or later. Each app page states its own requirements.
The appsBuy
Available at checkout
Pricing model: not set
Secure checkout via Lemon Squeezy
Prices in USD. Taxes may apply at checkout
Trial length: not set
A money-back guarantee is not published. Refund policy
Lemon Squeezy emails the license key after purchase. If the store sends you back with a key, it is shown on the thank-you page.
Questions
Is Cairn a cloud chatbot?
Cairn is a private on-device assistant. It answers on the Mac. Connecting Slack or Notion still involves those products, because that is where those accounts live.
Does every sentence have a source?
Yes. Cairn puts a citation on every sentence, and it shows source age and confidence.
Will it delete duplicate files on its own?
The knowledge health report includes duplicates and outdated docs. Actions are approval-gated. The report itself is not a delete button.
Does Cairn send my data anywhere?
Cairn is a private on-device assistant. It indexes files on the Mac. Connecting Slack or Notion talks to those services. We do not describe a Seven Hills server that stores the corpus.