Grackle AI: Now with Gen 4 xAI

Nightly Nexus

In-app purchases

About this app

Grackle is powered by xAI’s Grok 4 AI model and aims to be fast, direct and affordable. Grok currently supports text conversation.

$2.99 per month currently gets you full access, much less expensive than other AI models.

Grackle is not affiliated with xAI but uses xAI’s latest powerful grok-4 AI model to be a helpful assistant.

Ratings and reviews

nice app! would be nice if I could give it system instructions. apart from that it's good!

Need to pay and subscribe to be able to use, let you install but can't use without paying, I understand the logic that you all use api and probably paying for it but at least you could let people test a few tries per account, even once could be understandable. Lucky grok itself coming to play store soon.

Like what the author is doing here but app occasionally randomly bricks itself and has to be reinstalled especially if there’s a large amount of text in one session. It doesn't let you activate the keyboard in this state. Would like to see auto text to speech option for replies like Gemini has and minimize user interaction with screen with voice to speech (there are 2 taps with android keyboard with grackle whereas Gemini has just 1, it auto detects the end of your inquiry and sends it).

What’s new

Grok 4 is now LIVE in Grackle!