Read what you love. Keep the words. Use them in conversation.
Learn a language from articles, books and YouTube videos you choose. Tap any word for its meaning, review the ones you miss, then use them in a chat at your level.
7-day free trial. No card.
What Spark helps you do
Six outcomes and the features behind them.
Read what you'd read anyway
Any article or video, with instant meanings.
Explore the reader →Follow it when it's spoken
Hear any article read aloud in a real accent.
Explore listening practice →Have the words when you need them
Review cards built from your own reading.
Explore vocabulary review →Get your sentence out in time
Chat about what you read, at your level.
Explore conversation practice →See that it's working
Track the words you can actually use.
Explore progress tracking →Use the AI you already use
Spark inside Claude or ChatGPT.
Explore Spark for Claude and ChatGPT →What each plan includes
| Each month | Free | Core | Plus |
|---|---|---|---|
| Imports | 2 articles and 2 videos | Unlimited | Unlimited |
| Word look-ups | 500 | 4,000 | 7,000 |
| AI narration | 10 min | 2 hours | 5 hours |
| Chat messages | 100 | 800 | 1,500 |
| Speaking your replies | 10 min | 2 hours | 5 hours |
| AI transcripts for videos without captions | Not included | 3 videos | 6 videos |
| Convert a video into your language | Not included | 2 videos | 3 videos |
| Spark in Claude or ChatGPT | Not included | Included | Included |
| Languages | 1 | 3 | Unlimited |
Core is $14.99 a month or $149 a year. Plus is $29.99 a month or $299 a year. Every new account gets 7 days of Core, no card.
Questions about Spark
What is Spark?
An app for learning a language from content you choose: read with help on every word, review what you miss, and use it in a chat at your level.
Who is Spark for?
People who can read some of the language they're learning and want to use it in real conversation. If you're starting out, Spark begins with short stories written at your level.
How much does Spark cost?
There is a free plan. Core is $14.99 a month or $149 a year, and Plus is $29.99 a month or $299 a year. Every new account gets 7 days of Core with no card.
Does Spark work with ChatGPT or Claude?
Yes, on Core and Plus. Connect Spark and your assistant talks to you at your level, using the words you know, and can build review decks and stories for you.
Can I use Spark on my phone?
Yes. The whole app works in your phone's browser, and pages turn with a swipe.
Finally use the language you've been learning.
Read something you care about today. Talk it through the same day.
7-day free trial. No card.