When you purchase through links on our site, we may earn an affiliate commission.Heres how it works.

Big name AI may get all the headlines, but behind the scenes theres another revolution going on.

My tests revealed three surprisingly good chatbots.

a silver-haired gentleman looks happily at his smartphone

Something that’s all the more remarkable with the meager resources of my Android phone.

I was genuinely shocked by how satisfying they are to use.

Local AI

This chatbot has an interesting take on adding AI to a phone.

Screenshots of the app taken from the Play Store

For instance the Fast setting is extremely quick.

Hopefully that will be fixed soon by the developers.

Download Local AI on the Play Store here.

Screenshots of the app taken from the Play Store

Beyond that, things run very slowly indeed.

The model size vs speed equation is a constant constraint of these apps.

The fact is current smartphones, apart from very high end models, are not built for processing AI.

Screenshots of the app taken from the Play Store

The result is most of the responses will be quite slow even using tiny models such as Gemma 2.

Download Private AI on the Play Store here.

PocketPal

One of the big surprises was howgoodthis free Android app is.

Google Pixel 9 Pro Unlocked…

So the fast speed is a surprising bonus.

This includes different cache parameters, and also using flash attention for faster processing.

One feature I particularly liked is the ability to add a different system prompt to each model individually.

Google Pixel 9 Pro Obsidian…

Download PocketPal on the Play Store here.

More from Tom’s Guide

Google Pixel 9 Pro 128 GB

Verizon

Google Gemini vs GPT 4o

Copilot, Gemini, Claude

AI tools floating out of laptops

AI Madness tournament bracket from Tom�s Guide showing 8 major AI chatbots, including ChatGPT, Gemini and others

ChatGPT generated image

Gemini gif

Student at desk

the plaud notepin, an AI dictaphone, in silver. it�s a pill shaped device at just 2 inches long and can be worn as a watch, necklace, clip, or pin thanks to the magnetic panel

A person holding a Nintendo Switch 2 playing Mario Kart World

2025 Rivian R1S Tri-Motor test drive review.

Garmin Vivoactive 6 in emerald green with the Morning Report shown on the screen

2025 Toyota bZ4X at New York Auto Show.

A person holding a Nintendo Switch 2 playing Mario Kart World