Stack
One login. Every tool.
Sign in once and everything is connected. Your tools, your team, your billing.
The Hub
Everything connects through Stack.
Log in once. Your identity, your team's roles, and your subscriptions flow to every app automatically. No separate accounts, no repeated setup.
Stack What Stack Does
Three things. Nothing else.
Stack handles the setup (team access, billing, permissions) so your team can focus on serving clients.
Identity & Access
One secure login. Invite your team, assign roles at the firm level. Every Cairn app inherits permissions automatically. One invitation gives a new team member access to everything they need.
Subscription & Billing
Browse the catalogue, subscribe to tools as your firm grows. One invoice, transparent pricing. No hidden fees, no surprises. Subscribe to exactly what you need, nothing you don't.
Your App Launcher
Every tool your firm subscribes to is one click away. Your login, your role, and your permissions carry over instantly. No re-entering credentials, no separate accounts.
Every firm gets its own database.
Your firm's data lives in its own dedicated database, completely separate from every other firm's. When you log in, every Cairn app connects to your firm's data and only your firm's data. There's no possibility of seeing another firm's information.
The Suite
Every Cairn app connects through Stack.
Identity, billing, and access. Managed once, inherited everywhere. The suite is real and growing.
Cairn Statements
AI-powered bank statement processing and QuickBooks sync for accounting firms.
Learn moreCairn Contacts
Client relationship and institutional knowledge base for accounting firms.
Learn moreCairn Payroll
PlannedPayroll review and reconciliation for firms using third-party payroll services.
Cairn Insights
PlannedFirm analytics and reporting dashboard for firm owners.
Cairn Receipts
PlannedAI-powered receipt and expense processing for accounting firms.
Cairn Notices
PlannedIRS and state notice management with deadline tracking and resolution workflows.
Cairn Leaf
Personal note-taking for accounting professionals. Daily pages, quick capture, ambient calm.
Learn moreCairn Post
In DevelopmentAI email intake that classifies, extracts documents, and routes content to the right Cairn app.
Learn moreReady to build your stack?
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