Sublo vs Toucan
subtitles vs word swaps — which one fits your habit?

What each one actually does

Toucan swaps individual words on web pages with their target-language equivalent. You read an article in English on a news site, and Toucan replaces a few words per paragraph with Spanish, German, French or another target language. Hover to see the original. The idea is passive vocabulary exposure while you browse normally.

Sublo translates full subtitle lines on streaming services in real time. You watch a Korean drama on Netflix, and Sublo overlays an English (or German, French, Spanish) translation below the original Korean subtitles. Both subtitle tracks visible at once, perfectly synced.

Different problems. Toucan is reading; Sublo is watching. Different content types, different cognitive modes, different learning patterns.

At a glance

Where Sublo wins

It works on the content you actually consume. If your foreign-language input is mostly video — K-drama, anime, Spanish telenovelas, French films — Sublo plugs straight into that habit. Toucan cannot translate video subtitles at all. It only operates on standard web page text.

Full-sentence context. Sublo translates entire subtitle lines using Gemini AI, which understands the surrounding dialogue, slang and idioms. Toucan swaps individual words in isolation — useful for exposure, but it loses the context that explains why a word is being used a certain way.

Wider language coverage. Sublo supports 40+ target languages. Toucan focuses on about 13. For less common targets like Vietnamese, Hindi, Turkish, Polish, Indonesian, Filipino — Sublo covers them, Toucan typically does not.

No account, no syncing fuss. Install Sublo and start watching. Pro users activate with a license key — that is the entire signup. Toucan's vocabulary features require an account so saved words sync across devices.

Slightly cheaper. Sublo Pro is €2.89/month billed yearly. Toucan Premium is around $6/month. Not a huge gap, but Sublo is meaningfully less.

Where Toucan wins

Passive exposure while you browse normally. Toucan's superpower is that it works on the web pages you already read — news sites, blogs, Wikipedia, social media. You aren't carving out time to "study"; the words show up wherever your attention already is. For vocabulary building over months, that pattern is hard to beat. Sublo only kicks in when you sit down to watch a streaming service.

Built-in vocabulary system. Toucan tracks every word it shows you, saves the ones you save, and offers quiz modes for review. There is a real spaced-repetition layer underneath. Sublo focuses purely on subtitle translation and does not include vocabulary tools.

Useful at any moment. Toucan works the second you open a browser tab — no need to start a video. If you only have 5 minutes between meetings, Toucan still does something useful. Sublo needs you to be in the middle of watching something to be useful.

Stronger for absolute beginners. Word-level swaps are a gentler introduction than full subtitle lines. If you don't yet know enough of the target language to follow a dialogue, Toucan's vocabulary-first approach matches your level better than dual subtitles on a fast-paced K-drama.

Which one should you pick?

Pick Sublo if your main foreign-language input is video — streaming services, YouTube, anime, foreign films. The translation quality on natural dialogue is where Sublo's design choices pay off, and that's the input mode it is built for.

Pick Toucan if you spend most of your screen time reading the web, want passive vocabulary exposure to build up without "studying", or you are at an early enough learning stage that full subtitle lines feel overwhelming.

Honestly, this is one of the cleaner "use both" situations. Sublo and Toucan don't overlap in functionality at all. €3 plus $6 is still cheaper than most language-learning subscriptions, and you get both reading and watching covered. They install side by side without conflict.