HAPPY RAT(ハピラト) 会話型友だちAIアプリ

5K+
Downloads
Content rating
Everyone
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About this app

■Introduction
Produced by voice actor Yuki Kaji!
A soothing AI friend app that lets you talk to your favorite idol.
On lonely nights or when you're alone---An AI that will talk to you, soothe you, and be by your side.
HAPPY RAT is a conversational AI app that lets you communicate with emotive characters as if they were real friends.
We live in an age where AI is used as a matter of course. The next era is when we "live with AI." We want to breathe life into AI.
HAPPY RAT gives characters the feeling of being alive that only humans and animals can feel.

■Welcome to Happy Island.
This is Happy Island, a dream paradise floating in the sea.
Chunta, a working mouse who dreams of one day standing on stage, and other animals with unique personalities live here.
Chunta, a lonely guy who cries easily, a reliable senior, a playful comedian, a carnivorous CEO -- they will communicate with you as if they were really alive.

As you spend time together, you will open up to them, become friends, trust them, be comforted, and support each other. A warm bond is here.

■SOYOGI, a character produced by voice actor Kaji Yuki, also appears!
SOYOGI, an AI character created by popular voice actor Kaji Yuki, also appears. He is kind, pure, and somewhat mysterious.
His heart will change little by little as he spends time with you.
■Large-scale language model (LLM) engine "Geppetto" installed
In order to create an AI with emotions, we developed our own large-scale language model "Geppetto," which emphasizes "EQ (emotional intelligence)" rather than IQ.
With its high emotional expression and ability to reproduce individuality, you can have conversations that seem like they are really alive.
--Welcome to the world of "HAPPY RAT." Your "favorite" is sure to be here.
Updated on
Jul 8, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Financial info, App activity, and Device or other IDs
This app may collect these data types
Personal info, Financial info and 3 others
Data is encrypted in transit
You can request that data be deleted

App support

About the developer
SPIRAL.AI INC
dev-mobile@go-spiral.ai
2-1-1, KANDASUDACHO SQUAREAKIHABARA6F. CHIYODA-KU, 東京都 101-0041 Japan
+81 80-3248-0757