English from TV series
Before you play an episode, you know how much you'll understand.
Before every episode you'll master exactly the words you're about to hear in the dialogue. No pausing, no dictionary, and you know whether an episode is too hard before you press play.
Coming soon to the App Store
The learning loop
Four steps to a green light
That's all that stands between you and watching an episode without stopping on an unknown word.
- 1
Pick an episode
The one you were going to watch tonight anyway. Greenlight doesn't set your syllabus — it fits around what you already watch.
- 2
See how much you understand
The app compares the episode's vocabulary against your personal dictionary and tells you the percentage of content words you already understand.
- 3
Do the lesson
First a quick triage — right for “know it”, left for “don't know”. Then you learn the ones you don't: each word comes back in the session until you've got it.
- 4
Watch
A green light means you're above your comfort threshold. Play the episode in the original and leave the remote alone.
What you get
Tools that do one thing well
No gamification, no streaks to keep alive, no notifications begging you to come back.
Gap Check
Comprehension is weighted by how often a word occurs, not just the list of unique words: a word that appears ten times in an episode weighs ten times more than one used once.
Learning with audio
You learn exactly the words you're missing, not a random list. The harder ones come back in the session until they stick. The phone reads the pronunciation itself, without sending anything to a server.
Spaced repetition
Learned words return at decreasing frequency so they settle into long-term memory instead of evaporating within a week.
Placement test
Two minutes of adaptive questions set your starting point. Or just pick your level, anywhere from A1 to C1, and adjust later.
Library and requests
The catalogue holds 245 series today, A1 through C1, and grows by hand — one title at a time. Yours missing? Request it from the app.
Honest progress
Words you know, words learned from series, days in a row, episodes with a green light. Numbers that actually mean something.
The mechanic
Three lights instead of guessing
Before you hit play you know where you stand.
Green light
You're at your comfort threshold or above it. Play the episode in the original — you'll follow it without stopping.
Amber light
You're a little short. One flashcard session — usually a dozen or so words — and you're on green.
Red light
This episode would cost you more time learning than watching. Better to come back to it in a few weeks.
Why we count it this way
Coverage is weighted by how often a word occurs, because comprehension depends on how many times an unknown word actually lands. We only count content words — the two hundred most common ones (“the”, “you”, “is”) are skipped, because everyone knows them and on their own they would push even a beginner into the nineties. Proper nouns count as understood — a character's name doesn't block a scene. The difficulty rating is prepared in advance, when the episode is added to the library.
Pricing
Start for free
The free plan is enough to find out whether this method works for you.
Free
- 3 episode analyses per day
- One episode at a time — no word cap
- Reviews and Foundation unlimited
- Placement test
- Your own words in the dictionary
Greenlight Pro
199,00 zł per year · 16,58 zł / mo
- No daily episode limit
- Learn towards any episode, no waiting
- The whole catalogue — 245 series today
- Detailed vocabulary statistics
Payment is handled by the App Store — cancel in one tap, any time.
Prices are planned for launch. The App Store always confirms the actual amount before purchase. Amounts are shown in Polish złoty.
Questions
Before you ask
Is the app in English?
The app interface is currently Polish only — that is the interface language, not the product's scope. The language you learn is English, with more planned. This page is bilingual.
Does Greenlight give me series to watch?
No. Greenlight is not a streaming service and doesn't provide episodes or subtitles. It prepares you for a viewing on a service you already use.
How does the app know which words I know?
It starts from your level — anywhere from A1 to C1 — which you pick yourself or a two-minute adaptive test sets for you. From there your dictionary grows with every flashcard session and review.
What is the “comfort threshold”?
It's the level of comprehension at which watching stops feeling like work. Default 85%. Lower it if you like a challenge, raise it if you want to understand truly everything.
Why does 83% sound high when an episode is still hard?
Because the last few percent are usually exactly the words that carry a scene's meaning. That's why we count coverage by occurrences, not by the list of unique words, and why the default threshold sits so high.
Where does a show's dictionary come from?
We prepare it ourselves, show by show — AI helps us create the translations, usage notes and original example sentences. The app contains no episodes and no subtitles.
What do I need to use it?
An iPhone on iOS 17 or newer and an internet connection to analyse an episode.
When does it launch?
The app is in development. We don't collect sign-ups or email addresses — when it reaches the App Store, this page will say so.
Green light means: watch
Greenlight is in the works. This page will change on launch day.
When does it launch? See the questions