Core Features

Smart replies in 3 steps, 10x efficiency boost

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Capture
Read chat text
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๐Ÿง 
Analyze
Context & emotion
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๐Ÿ’ฌ
Generate
6 style replies
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Tap to Send
One tap done
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โœ…
Sent!
3 seconds total

๐Ÿถ AI senses the contextโ€ฆ Detected: Girlfriend missing you

01 ยท Smart Context Awareness

Langou automatically reads visible chat text โ€” 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.

๐Ÿถ AI generates multi-style reply suggestions:

Miss you too babe! Almost home ๐Ÿฅฐ๐Ÿ’• Sweet
On my way! Got you bubble tea ๐Ÿต๐Ÿ˜Ž Funny
Coming home, need a hug ๐Ÿค—๐Ÿค— Warm

02 ยท Multi-Style AI Reply Generation

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

Miss you too babe! Almost home ๐Ÿฅฐ๐Ÿ’• Sweet
On my way! With bubble tea ๐Ÿต๐Ÿ˜Ž Funny
Need a hug ๐Ÿฅบ๐Ÿค— Warm
Miss you too babe! Almost home ๐Ÿฅฐ

โœ… Sent!

03 ยท One-Tap Select & Send

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

โŒ Original prompt

write me a plan

๐Ÿถ Prompt optimizer at workโ€ฆ

โœ… 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 ยท Prompt Optimizer

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

๐Ÿพ More Features

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Cloud Sync

Dictionary, preferences, and data sync across all devices.

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Custom Themes

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

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Chinese Input Engine

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

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Multi-Language

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

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Privacy Protection

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

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Lightning Fast

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