We're excited to introduce Postiller, a new kind of AI content creation tool built for people who care about privacy.
The Problem with AI Writing Tools
Most AI writing assistants share a common issue: they want your data. Your drafts, notes, and ideas flow through their servers. Your content may train their models. And for this privilege, you pay monthly subscriptions that never end.
We built Postiller because we believed there had to be a better way.
A Privacy-First Approach
Postiller takes a fundamentally different approach:
- Your data stays on your device - All bookmarks, notes, and drafts are stored locally using SwiftData
- Bring your own API keys - Connect directly to OpenAI, Anthropic, Google, or xAI with your own keys
- On-device AI - Many features use Apple's on-device models, so data never leaves your phone
- One-time purchase - No subscriptions, no recurring fees
How It Works
When you save a bookmark or jot down an idea, it stays on your iPhone or iPad. When you want AI help to polish a draft, Postiller connects directly to your chosen provider - we never see your content.
// Your data flows directly to your AI provider
let response = try await aiProvider.generate(
prompt: yourContent,
apiKey: yourKey // Stored securely in Keychain
)
For many tasks like semantic search and basic text processing, we use Apple's on-device intelligence. It's fast, private, and free.
See It in Action
Here's a quick look at how Postiller helps you create content:
What's Next
We're currently in private beta, refining the experience with early users. If you're interested in trying Postiller, request early access.
Stay tuned for more updates on our journey to build privacy-first AI tools.
This post was written in Postiller and published directly to our blog - dogfooding at its finest.