Causa is an AI Spanish tutor that lives inside WhatsApp. No app to download, no Zoom calls — just practice whenever you have a few minutes. Send a text or voice message in Spanish and Causa responds both ways, correcting what you write and say, then continuing the conversation naturally. Choose your Spanish variant: Mexican, Argentinian, Peruvian or Spanish from Spain. Currently looking for beta testers — 7 days free, no credit card required.

Hey! 👋 I'm Iván, a solo developer from Peru. I built Causa because I noticed that the hardest part of learning Spanish isn't grammar — it's finding a low-pressure space to actually practice speaking and writing every day. Causa lives entirely inside WhatsApp, which means zero friction. You text or send a voice note, it corrects you and keeps the conversation going naturally. You also choose which Spanish variant you want — Mexican, Argentinian, Peruvian or from Spain — because they're genuinely different. I'm looking for 10 beta testers to try it free for 7 days in exchange for honest feedback. If you're learning Spanish or know someone who is, I'd love to hear your thoughts. Happy to answer any questions below!

Causa

Learn Spanish via WhatsApp — text, voice & regional variants

Learn Spanish via WhatsApp — text, voice & regional variants