6,620 tools, each one opened, scored and signed by a Toolio reviewer

Kai

AI keyboard assistant for iPhone.

Checked 5 Oct 2026 Reviewed by Alex Listed since October 2024

Screenshot of Kai

At a glance

Starts at $9.99 Price as published by the vendor, September 2026.
Free tier No
Platforms iOS only
Best for Writers, content creators

3.8 out of 5

Scored by Alex after real use

Our verdict

Kai offers AI writing help on your phone but is limited to iOS only and lacks detailed pricing information.

✓What it does well

Quick integrationInstantly upgrades iPhone's default keyboard with AI features.
Quick SetupEasy to integrate with iPhone's keyboard.
Accessible FeaturesIncludes word prediction and grammar checks for enhanced writing.

✕Where it falls short

Limited platform supportWorks only on iOS devices, not Android or desktops.
No detailed pricingPricing information is missing from the site.
Premium features cost extraSome advanced functionalities require a paid subscription.

Key features

AI suggestionsProvides real-time writing assistance and corrections.
Customizable keyboard layoutAllows users to adjust the keyboard according to their preferences.
Accessibility optionsIncludes features like word prediction, grammar checks, and more.
Customizable LayoutAllows users to adjust the keyboard layout as needed.

Questions about Kai

What is Kai?

Kai is an AI keyboard assistant for iPhone that upgrades the default keyboard with AI features. It provides real-time writing suggestions and corrections, word prediction and grammar checks, and lets users customize the keyboard layout. The reviewer finds it quick and easy to set up.

How much does Kai cost?

Kai has no free tier. The Monthly Plan costs $9.99 and the Annual Plan costs $89.04, with the $9.99 starting price as published by the vendor in September 2026. The reviewer also notes that some advanced functions require a paid subscription.

Does Kai work on Android?

No. Kai works only on iOS devices, not on Android or desktops, which the reviewer lists as its main limit. It is built as an AI keyboard for iPhone, upgrading the default keyboard with writing help.

Who is Kai for?

Toolio recommends Kai for writers and content creators who want AI writing help on their phone. Alex scored it 3.8 out of 5 after real use, crediting its quick setup and features such as word prediction and grammar checks.

What are some alternatives to Kai?

Toolio lists Say Pi Chrome Extension, Eleo AI Assistant Chrome Extension, Noam ChatGPT Translate As Chrome Extension and Istory Live as alternatives to Kai. Say Pi turns AI conversations into voice-driven experiences, and Eleo AI Assistant helps with emails and documents.