There isn[SQ]t a single, universally known Android app called "AI Gallery." The name is too generic. There are many apps on the Google Play Store that use AI in some way and might incorporate the word "AI" or "Gallery" in their title or description.

To find what you[SQ]re looking for, you need to be more specific. Are you thinking of an app that :

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Uses AI to enhance or edit photos in a gallery?

Many photo editing apps use AI for things like background removal, upscaling, style transfer, etc.
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Is an AI-powered art generator that saves images to a gallery?

Apps like these let you create images from text prompts and store them.
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Is a gallery app with AI-powered features?

This might include features like smart album creation based on AI recognition of faces or objects.
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Something else entirely?

If you can remember any other details about the app (developer name, logo, specific features), that would help greatly in identifying it.