An Android keyboard that refuses to be everything

What it does

Xime is an Android Chinese input method built atop the Rime engine, supporting Wubi, Pinyin, and custom schemes. The author uses it as a daily driver and keeps the surface area intentionally small, explicitly rejecting the sprawling feature sets of larger frameworks like fcitx-android or Trime. It handles typing, voice input, clipboard history, and theming through a Material Design 3 interface.

The interesting bit

Rather than relying solely on cloud services, Xime runs local Transformer models—a roughly 17 MB predictive-text model and a 2.2 MB punctuation predictor—alongside offline speech recognition powered by sherpa-onnx. The author openly calls the project an “NLP testbed,” which explains why the AI stack is first-party and the rest of the app is deliberately opinionated.

Key highlights

• Built on librime with a Kotlin and Jetpack Compose frontend, bridging native C++ through JNI.
• Ships with Wubi 86/98, Pinyin, and mixed-mode support, though resources and UI bias heavily toward Wubi.
• Runs predictive text, punctuation restoration, and ASR entirely on-device using downloadable ONNX models.
• Offers candidate encoding hints and swipe-down radicals for Wubi learners or the occasionally forgetful.
• Material Design 3 with light/dark themes, adjustable keyboard height, and optional plugin packs for kaomoji and memes.

Caveats

• The author describes it as a personal tool first: if the UI or feature mix doesn’t suit you, the expected remedy is to fork it.
• Currently transitioning toward broader scheme support, but the roadmap explicitly rejects becoming a general-purpose, highly configurable IME.

Verdict

Consider it if you want a lean, Rime-backed Android keyboard with genuine on-device AI and a Wubi-centric workflow. Pass if you need deep customization or a Pinyin-first experience without compromise.