Question 1

What is Rainline?

Accepted Answer

Rainline is a free, privacy-first AI chat app for macOS. It supports multiple AI providers, integrates with MCP tools, and keeps your conversations and credentials on your Mac.

Question 2

Is Rainline really free?

Accepted Answer

Yes. Rainline Basic is free to download and use forever. We also offer DevKit, a subscription that unlocks 200+ advanced tools and premium features.

Question 3

Do I need an account to use Rainline?

Accepted Answer

No. You can download Rainline and start chatting immediately. You only need an account if you choose to subscribe to DevKit or enable encrypted sync when Pro launches.

Question 4

Where are my API keys stored?

Accepted Answer

Your API keys are stored securely in the macOS Keychain, encrypted at rest by Apple's security subsystem. We never see or store them on our servers.

Question 5

Does Rainline send my conversations to your servers?

Accepted Answer

No. Conversations are stored locally on your Mac. The only remote connections Rainline makes are directly to your chosen AI provider endpoints.

Question 6

Is Rainline open source?

Accepted Answer

Key components of Rainline are open source. You can inspect the code, build from source, and verify release checksums on our GitHub repository.

Question 7

What providers does Rainline support?

Accepted Answer

Rainline supports OpenAI, Anthropic, Groq, and Mistral out of the box. You can also add custom OpenAI-compatible endpoints using your own API keys.

Question 8

What is MCP integration?

Accepted Answer

MCP (Model Context Protocol) lets Rainline connect to local and remote tools so your AI assistant can perform actions like running commands, querying databases, or controlling your environment.

Question 9

What powers the tool ecosystem?

Accepted Answer

Rainline's advanced tool palette is powered by rainfall-devkit, the open-source engine behind the Rainfall intelligence ecosystem. It enables the 200+ tools available with DevKit.

Question 10

What is DevKit?

Accepted Answer

DevKit is a $9/month subscription that unlocks the full Rainfall DevKit ecosystem, including 200+ advanced tools, premium MCP servers, cloud orchestration, and API access.

Question 11

Can I cancel DevKit anytime?

Accepted Answer

Absolutely. DevKit is billed monthly and you can cancel anytime from your account settings. Your access continues until the end of the current billing period.

Question 12

Do you offer refunds?

Accepted Answer

Yes. If DevKit is not working out for you, contact us within 14 days of your first payment for a full refund.

Question 13

Rainline won't open after installation. What should I do?

Accepted Answer

macOS Gatekeeper may block apps downloaded from the web on first launch. Right-click the Rainline app and select Open, or go to System Settings > Privacy & Security and allow it.

Question 14

How do I report a bug or request a feature?

Accepted Answer

You can open an issue on our GitHub repository or reach out via the support page. We read every submission and prioritize based on community demand.

Frequently asked questions

Powered by rainfall-devkit

Still have questions?