AI in any app

In-context AI writing assistant for macOS

Kerlig app

One-time payment, then cover only for used OpenAI, Claude or Gemini tokens.

Payment via Lemon Squeezy.
VAT may apply.


Trusted by 620 people already!

Never embarrass yourself with typos again

Fix spelling and grammar in any app before you hit send

Don't ghost people

Reply on the go with perfectly crafted message

…or just ask about anything

As you would with ChatGPT.

(Input token limit 8/16/32K depending on model)