Watch videos to learn any language. Bilingual captions, grammar explanations & word lookup on Netflix, YouTube and more. DualCap overlays live dual language captions on whatever video you play. View original subtitle and translation side by side Click any word to look it up. Click for conjugation and full grammar explanation Save sentences to your own dictionary. No separate study sessions. No app switching. Just watch and absorb.

Mantle — The ultimate founder launchpad: Cap tables, equity & 409As

The ultimate founder launchpad: Cap tables, equity & 409As

Hey everyone 👋 maker here. DualCap started as a personal project. I was learning German by watching Netflix and kept switching between the show and a dictionary. Every language learning tool I found was either expensive, slow, or just not built for how immersion actually works. So I built this over a few nights. The core idea is simple your brain picks up language fastest through context and repetition. DualCap keeps you inside the video while giving you everything you need: translation, grammar, word lookup, and a dictionary that builds itself as you watch. Would love to hear from anyone learning a language through content. What do you watch? What's been the hardest part? Happy to answer any questions about how it works under the hood too.

Mantle — The ultimate founder launchpad: Cap tables, equity & 409As

The ultimate founder launchpad: Cap tables, equity & 409As

DualCap

Bilingual Captions & Language Learning

Bilingual Captions & Language Learning