OpenCat

As an AI chat client, OpenCat takes a different route from browser-based tools: it is a native app for Mac, iPhone and iPad.

OpenCat is an AI assistant and chatbot app that lets you talk to several AI models in one spot, with translation, voice and text-to-image features alongside.

The free plan includes a prompt library, Markdown rendering and access to multiple models.

Pro starts at $9.99 and adds a keyboard extension, iCloud sync, Siri integration, text to speech and team joining.

A separate Cloud AI tier bundles GPT access, voice chat, vision chat for discussing pictures, image generation from prompts and keyboard input, so you can call on AI inside other apps.

With three tiers, check which features sit in which one before you pay.

If most of your work happens on Apple devices, OpenCat gives you one app for many models.