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Assembly
What it is
Assembly combines an AI app builder, CRM, and branded client experience for client-facing apps and internal tools. Users describe an app in plain language, review a proposed plan, publish it, and refine it through conversation. More than 30 templates cover document collection, project tracking, proposals, and client support. Apps can connect to third-party services through authentication or an API key. An MCP connector links the workspace with AI tools such as ChatGPT and Claude. Published apps appear together in the workspace sidebar, while Assembly manages client authentication, roles, permissions, and client data scoping. The platform is SOC 2 Type II certified and offers HIPAA support with a BAA on Advanced; AI features are excluded from HIPAA support. Data is stored in the United States and encrypted with TLS in transit and AES-256 at rest. Assembly is not intended for public websites, public directories, or consumer apps. A free plan is available; paid plans start at $29 a month billed annually.
For and against
For
- Plain-language app building
- 30+ workflow templates
- Branded client experience
- SOC 2 Type II certification
- Web, Windows, and macOS access
Against
- Not suited to public-facing apps
- Free plan limits active contacts and apps
- HIPAA support excludes AI features
- Advanced plan requires annual billing for listed price
The verdict
Assembly combines conversational app creation with CRM and controlled client access across web and desktop platforms. Its free tier supports limited usage, while paid plans add contacts, users, domains, compliance, and support.
Who it suits
Assembly suits teams building authenticated client experiences and internal tools for requests, work tracking, files, and connected services.
Plans and prices
Free
5 active contacts · 1 internal user · 50 build credits/month · CRM
Read 15 Oct 2026 · assembly.com
Starter
50 active contacts · 1 internal user · 200 build credits/month · API & MCP connector
Read 15 Oct 2026 · assembly.com
Professional
500 active contacts · 3 internal users · 200 build credits/month · custom domains
Read 15 Oct 2026 · assembly.com
Advanced
Unlimited active contacts · 5 internal users · 200 build credits/month · audit log
Read 15 Oct 2026 · assembly.com
Enterprise
Unlimited users, contacts and apps · custom SSO · volume-based build credits · dedicated architect and success manager
Read 15 Oct 2026 · assembly.com
On the record
- Accounting integration
- The QuickBooks integration syncs Assembly invoices, customers, changes and payments one way into QuickBooks Online.assembly.com · read 15 Oct 2026
- AI app builder
- Users describe an app in plain English, answer a short question flow, approve a plan and receive a deployed app in their workspace.assembly.com · read 15 Oct 2026
- AI data use
- Assembly says it does not use workspace or client data to train AI models.assembly.com · read 7 Oct 2026
- AI integrations
- Assembly’s MCP connector can connect the workspace to AI tools including ChatGPT and Claude for analysis and workspace actions.assembly.com · read 7 Oct 2026
- App templates
- Assembly offers 30+ app templates covering workflows such as document collection, project tracking, proposals, and client support.assembly.com · read 7 Oct 2026
- Billing
- Payments support invoices, subscriptions, payment links, stores and credit-card or ACH collection.assembly.com · read 15 Oct 2026
- Builder limits
- The builder does not create public websites, native mobile or desktop apps, streaming experiences or heavy-compute workloads.assembly.com · read 15 Oct 2026
- Builder scope
- Generated apps can be client-facing or internal, use Assembly CRM/auth/notifications/branding, keep their own database and call external APIs.assembly.com · read 15 Oct 2026
- Built-in client experience
- Workspaces include a branded client experience, and published apps appear together in its sidebar.assembly.com · read 7 Oct 2026
- Client portal
- The portal centralizes client messaging, file sharing, e-signature contracts, invoices, forms and tasks under the firm's branding.assembly.com · read 15 Oct 2026
- Company size
- LinkedIn lists Assembly as a privately held software-development company with 11–50 employees.linkedin.com · read 15 Oct 2026
- Compliance
- Assembly says its platform is SOC 2 Type II certified and offers HIPAA support with a BAA on the Advanced plan; AI features are not covered by HIPAA support.assembly.com · read 7 Oct 2026
- Connected services
- Apps can connect to third-party services by authenticating the tool or providing an API key during setup.assembly.com · read 7 Oct 2026
- Contracts
- The platform includes professional agreements with built-in electronic signatures.assembly.com · read 15 Oct 2026
- CRM
- Contacts and companies are maintained in one CRM with client context available across apps.assembly.com · read 15 Oct 2026
- Data protection
- Assembly says customer data is encrypted in transit with TLS and at rest with AES-256, and workspace data is not used to train AI models.assembly.com · read 15 Oct 2026
- Desktop app
- Assembly offers a desktop app for macOS on Apple silicon and Intel, and Windows 10 or later 64-bit; the site also links to its web app.assembly.com · read 7 Oct 2026
- Developer extensibility
- Custom apps can be embedded for internal users or clients and can use Assembly's REST API plus webhook URLs.github.com · read 15 Oct 2026
