Compared with SillyTavern

SillyTavern is a server. To use it on Android you install Termux, clone it with git and start it there, which its own FAQ says is not officially supported, or you leave it running on a computer and open it from your phone's browser. On an iPhone, the browser route is the only one.

The Loup Frères Island is a native app on Android, not a web page in a wrapper. That is what lets it do the things only a phone app can: characters who text you as notifications while the app is closed, replies straight from the notification, and alarms where a character wakes you up.

In SillyTavern, long-term memory is something you set up and tend. World Info entries are written by you and inserted when their keywords appear. Vector storage, which pulls relevant past messages and documents back into the prompt, is off until you turn it on, and the Summarize extension keeps a running summary you can edit. Community extensions add more, including knowledge graphs.

In The Loup Frères Island, memory is built while you play. Every message is scored for how much it matters, and the most relevant past moments are recalled with each reply. Every ten messages, by default, the app adds the people, places and relationships from the story to a knowledge graph, and when enough has happened in a calm moment, the character stops to reflect on it. You can read and edit all of it in the Archival Scholar, or look at it as a star map.

SillyTavern's World Info is precise: keyword and regex triggers, recursion, probabilities, token budgets, timed effects and constant entries, with vector matching as an option.

The Loup Frères Island has no keyword triggers. Lorebook paragraphs are matched to the conversation by meaning, and Static Lore is sent with every prompt. Worlds bundle lore with a cast of side characters that more than one character can share. If you rely on exact triggers, SillyTavern gives you finer control.

SillyTavern can post a message from a neutral narrator on command, and the Objective extension works a goal into a task list. Group chats have no documented member limit and several ways to choose who speaks next.

In The Loup Frères Island, the Narrator watches each scene and decides whether to add a beat, bring in a side character from the world's cast, or stay out of the way; a side character can hold the conversation for several turns. The Overseer plans a whole campaign in acts and scenes, with a writer and a critic, and you approve each step. Group chats hold two to four characters, and each replies in turn after you.

This is where SillyTavern leads. It has text completion with instruct templates, a drag-and-drop prompt manager, a long list of samplers, Quick Replies, STscript, around 30 official extensions and a community writing more, plus text to speech and speech recognition.

The Loup Frères Island gives you control of a different kind. The prompts behind its features are settings you can rewrite, each job in the app can use a different model, and the sampler settings a model supports are shown for it. It has no extensions, no scripting, no text completion and no text to speech, and replies appear once they are finished rather than word by word.

The Loup Frères Island imports SillyTavern character cards, PNG or JSON, versions 1 to 3. The import uses your AI to rewrite the card into the app's own fields; the greetings come over word for word, and an embedded lorebook becomes lorebook text, without its keyword triggers. Stand-alone World Info files can't be imported, and there is no export back to SillyTavern's format.

SillyTavern is free, open source under AGPL-3.0, and its developers do not take donations for it.

The Loup Frères Island is closed source. It is free during the Open Beta, and every version you download is yours to keep. When the beta ends a license is what gets you the installer and its updates; the versions you already have keep working.

Choose SillyTavern if you want to shape every part of the prompt yourself, use text completion and instruct templates, add extensions and scripts, use it on an iPhone, or need it free and open source.

Choose The Loup Frères Island if you want a real app on your phone, memory that builds itself as you play, a narrator and campaigns without setting them up, and characters who reach out to you. It runs on the same AI providers you may already use: download it and get started.

What this page says about SillyTavern comes from its documentation and code:

• SillyTavern documentation and FAQ
• Installing on Android (Termux) and remote connections
• World Info, Data Bank, chat vectorization and Summarize
• Group chats, STscript and extensions
• Multi-user mode
• The SillyTavern repository and its 1.19.0 release

Spotted something out of date? Tell us on Discord.