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Use case · WhatsApp Replies

WhatsApp, with an AI keyboard

Translate messages to 55+ languages, generate replies, change tone — all inside WhatsApp. No copy-pasting to Google Translate.

Download on the App Store

WhatsApp is the dominant messaging app outside the US — and most of its users write in multiple languages every day. An AI keyboard makes that flow 10x faster.

For family across countries, international friends, or business partners across regions, every WhatsApp message in another language used to be a 30-second translation detour. With an AI keyboard, it's 2 seconds.

How to do it with KeyAI

  1. 1

    Open WhatsApp and tap into a chat

    Long-press the globe icon (🌐) to switch to your AI keyboard.

  2. 2

    Translate an outgoing message

    Type in your native language. Tap Translate → target. The message is replaced in place. Send.

  3. 3

    Translate an incoming message

    Long-press the received message, tap Translate (iOS built-in Apple Translate). Or copy and paste into the AI keyboard for context-aware re-translation.

  4. 4

    Generate a reply with context

    For ongoing chat, tap Generate Reply. The keyboard drafts a reply based on the last messages.

  5. 5

    Apply tone shift before sending

    For tricky replies (family conflict, business follow-up), apply Tone → Friendly or Professional before sending.

Example

Before
"Hola, gracias por confirmar — nos vemos el viernes a las 7."
After (with KeyAI)
"Hi, thanks for confirming — see you Friday at 7." [in English] OR "Olá, obrigado por confirmar — vejo-te sexta às 7." [in Portuguese]
Same message, three languages, two taps each. International friend groups, family chats, business chats — all 10x faster.

Tips

  • • For ongoing chats with the same person, pin their language so you don't pick it every time.
  • • For business WhatsApp, Tone → Professional before sending automated replies.
  • • Translation works mid-conversation — no need to start a new draft.
  • • Voice notes still need a transcription tool — translation keyboards work on text only.

FAQ

Can I translate WhatsApp messages on iPhone?

Yes — incoming via Apple's built-in long-press Translate, outgoing via an AI keyboard like KeyAI. Both directions are 1-tap.

Does KeyAI work inside the WhatsApp app?

Yes — every iOS app. The keyboard works at the OS layer, so it's available in every text field of every app, including WhatsApp Business and WhatsApp Web on iPad.

How many languages does it translate?

55+ languages on KeyAI, including all major Latin American Spanish variants, Brazilian Portuguese, European Portuguese, German, French, Italian, Arabic, Hindi, Bengali, Urdu, Mandarin, Cantonese, Japanese, Korean, Vietnamese, Thai, Indonesian, Tagalog.

Is my WhatsApp content private with an AI keyboard?

When you tap Translate, only the selected text is sent to the AI provider. Nothing else is logged. WhatsApp's end-to-end encryption protects the message in transit; the AI keyboard sees only what you explicitly send through it.

Join 100,000+ users writing smarter on iPhone

Free for 3 days. No credit card to start the trial.

Download on the App Store