RIFF turns the words, idioms and cultural references that unlock your favorite shows into collectible cards you actually master, not flashcards you forget.
Cancel anytime · for iPhone
Browse a growing catalog of series. Each show breaks into decks by episode, so you learn exactly the language of the scene in front of you.
Series
Dialogue you actually hear
Episode decks
Scene-accurate vocabulary, in the show’s own order
Daily deck
Cards due for review, gathered for you each day
A simple loop you repeat: each pass leaves more of the story understood.
Choose a show from the catalog and open the deck for an episode: context you already care about.
Browse each card’s image, definition and real example, then rate how well you already know it.
A rotating set of exercise types brings each card back right as you’re about to forget it: the timing runs on research-backed memory models, not a fixed calendar, so nothing is wasted on what you already know.
Watch your coverage and six-stage comprehension profile climb, scene by scene, toward full understanding.
Language isn’t just words. RIFF gives each kind of meaning its own card, color and way of learning.
The front introduces a meaning; the back deepens it. Tap Flip to see the extras, straight from the app. Why one card per meaning?
Definitions and examples graded by level, all with audio. Flip the card for extras: inflections, synonyms and etymology.
Multi-word verbs taught as one unit, because “go off” isn’t “go” plus “off”.
A three-step reveal: literal scene → figurative meaning → where it came from.
People, places, events and works worth knowing to truly get the reference.
Every card you learn comes back as a different challenge, so recall stays active, never rote.
Type the missing word back into a real sentence from the story.
A picture, a sound, a line of context: whichever side you get, recall the rest and flip to check.
Separate an idiom’s surface image from what it truly means.
Drag the words back into order and hear the line the way the story said it.
Recall why that name keeps coming up, then reveal the answer to check.
Rebuild the phrasal verb tile by tile to learn exactly where the pronoun goes.
Six here, more in the app.So you never end up memorizing the format instead of the language.
RIFF scores how much of each work you can follow and maps it onto a six-stage comprehension profile, so progress is something you can actually see.
Your comprehension profile climbs as coverage grows.
RIFF hides badges all across your journey. Unlock one and it hands you free days on your subscription. No purchase, no catch. Most stay a mystery until you earn them.
It adds up to weeks of RIFF, earned just by learning.
Your weekly streak is earned by real study (new cards learned and reviews cleared, never just opening the app), with the bar set from research on what actually builds a habit.
Your subscription opens all of RIFF: every work, every deck, every exercise. Cancel anytime.
$3.99 /mo
Billed monthly
Coming soon to the App StorePrices in USD. Subscriptions are handled by the App Store, billed in your region’s currency, and renew automatically unless you cancel at least 24 hours before the period ends.
Yes. Cancel from your App Store subscription settings and you keep access until the end of the period you have already paid for.
Badges you unlock while learning grant real free days on your subscription. No purchase needed, and they stack up to weeks.
The catalog is English-first today. Cards run from A1 to C2, and each one’s definition and example stay in the language you’re learning, written at three reading levels so there is always one you can read comfortably.
RIFF is an iPhone app, designed for that screen from the ground up.
RIFF arrives on the App Store very soon, turning what you’re already watching into real, lasting fluency.
One subscription · Cancel anytime
