Three taps.
That's the loop.
Pick
your jungle
Six free B1–B2 decks. Six premium C1–C2 decks. Business, Tech, Sport, Science, Travel, Health & Medicine — pick the ground you actually walk on.
Take
a guess
A real sentence with a blank. No flashcard "list of words" feeling — every card teaches a word the way you'd actually meet it in the wild.
Reveal
the catch
Flip. Swipe right for Caught it, left for Missed it. That's the entire grading system. Try it →
No SM-2. No intervals. No streaks to protect. Just you, the word, and the truth.
Burned
the
algorithm.
Most flashcard apps schedule you. Sage Ape doesn't.
We threw out SM-2, intervals, streaks, XP, and every other dopamine knob. The study loop is the product. You see a card. You guess. You flip. You decide if you caught it. That's it.
Words land because they appear in sentences you'd actually use — not because a graph says you're due in 14 hours.
Twelve
jungles.
Six free for B1–B2. Six premium for C1–C2.
Pay once.
Or don't.
- ✓6 B1–B2 decks (300 cards)
- ✓Caught/Missed binary grading
- ✓iPhone, iPadOS, macOS, Android
- ✓Local-first. No tracking.
- ✓Everything in Free
- ✓6 C1–C2 advanced decks (300+)
- ✓Support a tiny indie team
Things
people ask.
What level is Sage Ape for?
B1 to C2. The free decks cover B1-B2 vocabulary in everyday contexts; the premium decks cover C1-C2 — the words you need for fluent professional speech, exam prep, and reading nuanced material.
Is Sage Ape free?
Yes. The six B1–B2 decks (300 cards) are free forever, with no account and no ads. Premium ($4.99/month, cancel anytime) adds the six C1–C2 decks.
What does a card look like?
The front is an English sentence with one word or phrase blanked out — for example, “The company is planning to _____ production to meet the growing demand.” You guess, flip, and the back shows the answer (scale up) with a short definition.
Which words are in the decks?
Twelve decks of 50 cards: Business, Tech, Science, Sport, Travel, and Health & Medicine, each at B1–B2 and C1–C2. They mix phrasal verbs, collocations, and the verbs and adjectives you meet in real texts. Browse every deck with sample cards.
Does Sage Ape use spaced repetition?
No. There's no SM-2, no intervals, and no due dates. You mark each card Caught or Missed, then study the whole deck again or only the cards you haven't caught yet — in order or shuffled.
Does it work offline?
Yes. Decks, cards, and your progress are stored on your device, so studying needs no internet connection.
Is my data sent anywhere?
Your decks and progress never leave your device. There is no account, no analytics SDK, no email collection. Premium subscriptions are paid through the App Store or Google Play and managed by RevenueCat, which sees only an anonymous ID and your purchase records — never your name or payment details.
Does my progress sync between devices?
No. Because there's no account, progress stays on the device you study on. Restoring purchases on a new device unlocks Premium again, but card progress starts fresh.
Does the Android version cost the same?
Yes — feature parity, same price. Sage Ape is on the App Store and Google Play, and a subscription bought on one platform is billed by that platform's store.
Can I add my own cards?
Not yet. Sage Ape ships with curated decks because curation is the product. Custom decks are on the roadmap for v2.
What about the gorilla?
Sage as in wise, ape as in the one doing the remembering. Also: monkey see, monkey remember. The gorilla is the mascot because gorillas are quiet, deliberate, and absolutely will not forget.