Core Features

Smart replies in 3 steps, 10x efficiency boost

πŸ“±
Capture
Read chat text
β†’
🧠
Analyze
Context & emotion
β†’
πŸ’¬
Generate
6 style replies
β†’
πŸ‘†
Tap to Send
One tap done
β†’
βœ…
Sent!
3 seconds total

🐢 AI senses the context… Detected: Girlfriend missing you

01 Β· Smart Context Awareness

Langou automatically reads visible chat text β€” no manual input needed. Smart emotion analysis detects tone (loving/playful) and intent (seeking attention). Works with WhatsApp, Telegram, WeChat, Discord, and all major apps.

🐢 AI generates multi-style reply suggestions:

Miss you too babe! Almost home πŸ₯°πŸ’• Sweet
On my way! Got you bubble tea 🍡😎 Funny
Coming home, need a hug πŸ€—πŸ€— Warm

02 Β· Multi-Style AI Reply Generation

Powered by MiMo large language model. Sweet/Humorous/Warm/Professional/Concise/Casual β€” 6 styles to match any conversation. Every suggestion is natural, optimized, and ready to send.

Miss you too babe! Almost home πŸ₯°πŸ’• Sweet
On my way! With bubble tea 🍡😎 Funny
Need a hug πŸ₯ΊπŸ€— Warm
Miss you too babe! Almost home πŸ₯°

βœ… Sent!

03 Β· One-Tap Select & Send

Found the perfect reply? One tap fills and sends it. No copy-paste, no app switching. Recognition β†’ generation β†’ selection β†’ sending β€” four steps become one.

❌ Original prompt

write me a plan

🐢 Prompt optimizer at work…

βœ… Optimized prompt

You are a senior product manager. Write a project proposal for "Smart Customer Service System" including: 1) Background 2) Architecture 3) Timeline 4) Expected ROI. Markdown, under 2000 words.

04 Β· Prompt Optimizer

Struggling with ChatGPT or DeepSeek prompts? Langou auto-transforms vague instructions into structured, professional prompts β€” doubling your AI output quality.

🐾 More Features

☁️

Cloud Sync

Dictionary, preferences, and data sync across all devices.

🎨

Custom Themes

Cute dog-themed design, eye-friendly typing experience.

πŸ”€

Chinese Input Engine

Based on RIME, full/double pinyin, million-word dictionary.

🌍

Multi-Language

Full Chinese and English. AI auto-matches conversation language.

πŸ”’

Privacy Protection

Encrypted transfer, no screenshot storage, memory-only processing.

⚑

Lightning Fast

2-3 second reply generation, 10x faster than manual typing.