Gugu Pinyin - Private Engine

Gugu Pinyin is a privacy-focused Chinese Pinyin input method powered by a self-developed local engine. It runs entirely offline with zero network access - no tracking, no data collection, no uploads.

Smart Pinyin Guidance
As you type, valid next letters are highlighted while invalid ones fade, helping you navigate the keyboard faster. Combined with phrase prediction and a large local dictionary, your typing is smooth and efficient.

Flow Commit (experimental)
Confirmed words commit automatically - no need to tap each candidate, and words commit as whole units instead of being split. Choose a Conservative / Standard / Aggressive tier; enable it in Settings, with a free trial for non-subscribers.

9-key (T9) & 26-key Layouts
Both a full 26-key QWERTY layout and a 9-key (T9) grid are supported - long-press the 中/En key to switch. T9 decoding runs entirely on-device, with full / abbreviated / mixed pinyin, syllable selection and segment-by-segment commit.

Self-developed Local Engine
All pinyin conversion, phrase matching, and prediction happen on-device. No cloud dependency means zero network latency and absolute privacy.

QWERTY + Swipe Typing
Full QWERTY layout with swipe-to-type support and dual-label keys (letters + numbers). Backspace swipe gestures for clearing or batch deleting text, and swipe down to undo a deletion.

Advanced Features (some are membership perks, with a free trial)
• Cursor mode: long-press a trigger key (G on 26-key / ' on punctuation / 5 on 9-key) and drag to move the cursor
• Clipboard history: long-press the space bar to bring up copied text and tap to insert it
• One-handed mode: shrink the keyboard to one side; swipe the space bar to switch hands

Beautiful Themes
20 premium keyboard themes (free + membership) - all keys change color instantly when you switch.

Popup System
Long-press a/e keys for punctuation popups, l key for emoji - all in an 18-cell grid layout.

Absolute Privacy
Unlike keyboards that require "Allow Full Access", Gugu Pinyin works without it. The keyboard extension has zero network capability - system-enforced isolation means your keystrokes stay on your device.

Subscription & Lifetime
• Yearly subscription: unlock popup customization, flip animations, backspace gestures
• Lifetime: one-time purchase, all premium features forever

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://lanceryoung.github.io/policy/pinyin/privacy.html