Sobani is a local AI roommate for your Windows desktop. She is more than a chat box or a decorative mascot: her personality and memories grow on your PC while you spend time together.
Before you buy: on BOOTH, Free is 0 JPY and Character Studio Pro is a one-time 1,500 JPY purchase for Windows 11. Ollama and a Japanese-capable model are required separately.
From the day you install Sobani, she becomes a resident of your desktop. She sits on window edges, takes an occasional walk, and spends quiet time simply being there.
She does not look at your screen without permission. Screen awareness and PC control only work when you explicitly enable them.
Start a chat and she answers in character. Leave her alone and she follows her own daily rhythm. Choose assistant mode for replies only, or a custom interval for occasional conversation starters.
By default, Sobani connects to a local Ollama model you install separately. OpenAI, Anthropic, and Gemini APIs are optional choices.
Parts of your conversations remain as memories and return naturally in later chats. Those memories are not hidden from you: you can open, read, edit, or delete them whenever you want.
Keep only what you want her to remember. That is the point of Sobani's memory design.
Ask during a conversation and Sobani writes it on the promise board. If the app is running at that time, she reminds you in her own words. One-time, daily, and weekly promises are supported.
Promises are stored only on this device. Sobani cannot notify you while the app is closed.
Chat history, memories, promises, and personality settings are stored on your PC. With the default local Ollama connection, conversations are processed locally too.
Conversation data is sent to an API only when you choose and enable OpenAI, Anthropic, or Gemini. API keys use Windows encryption rather than plaintext storage. Provider fees follow your own contract.
You can delete individual memories, disable permissions such as screen awareness at any time, and remove the app's local data folder.
| OS | Windows 11 (64-bit) |
|---|---|
| Memory | 16 GB or more recommended for running a local LLM |
| Required | Download Ollama (free) and a Japanese-capable model separately. The included README explains the setup. |
| Optional | VOICEVOX (free, installed separately and not bundled) — spoken lines use VOICEVOX: Shikoku Metan. |
| Disk | Space for the app plus several gigabytes or more for your chosen LLM model. |
Available now on BOOTH
Free delivers the finished Sobani Resident experience. Character Studio also lets you edit and preview personality, appearance, and VRMA motion choices.
Free
Use Resident features such as conversation, memories, and promises with the standard character. You can also edit and preview drafts in Character Studio.
Free cannot production-save a custom character or apply it as the active Resident.
0 JPY (Free variation)
Character Studio Pro
Save the custom character you create in Character Studio and apply it to the Resident experience.
1,500 JPY one time (Pro variation)
Existing BOOTH or itch.io purchasers can use Pro without paying again or losing features.
Safety, privacy, data inspection, and data deletion remain available in Free.
BOOTH item 8616433 is live with Free at 0 JPY and Character Studio Pro at 1,500 JPY.
The first setup requires internet access to download Ollama, a model, and optionally VOICEVOX. Afterward, Ollama conversations and VOICEVOX speech can run locally. Internet access is needed when you choose a cloud AI API.
Character Studio lets you edit personality, speaking style, and how the Resident addresses you. Sobani also supports loading your own VRM model.
Not with the default local Ollama connection. Conversation data is sent only when you choose and enable an OpenAI, Anthropic, or Gemini API.
Install the free VOICEVOX app separately and Sobani can read her lines with VOICEVOX: Shikoku Metan. VOICEVOX is not bundled. Text-only conversation works without it.
Free is 0 JPY and Character Studio Pro is a one-time 1,500 JPY purchase. There is no subscription. If you choose cloud AI, you pay that provider separately.
Invite her to stay.
Buy on BOOTHFree is available for 0 JPY and Character Studio Pro for a one-time 1,500 JPY on BOOTH. Windows 11, Ollama, and a separately downloaded Japanese-capable model are required.