Instead of showing you the same words on a fixed schedule, WordUp watches how well you recall each one — and times the next review to hit right before you'd forget it.
The interval ladder
Day 0→First time seeing it
Day 4→First correct recall
Day 10→Getting familiar
Day 24→Feeling strong
Day 60→⭐ Mastered
The gap doubles each time you nail it. That's what makes it stick long-term.
⏱
After every card, you rate yourself
Three buttons. Your honest answer sets when this word comes back.
😬
Again — back in 10 min
Blanked on it. WordUp resets the interval and brings it back this session. Mastery drops.
🤔
Hard — tomorrow
Almost had it. Short interval, no mastery advance. You'll see it again soon.
😎
Easy — interval doubles
Nailed it. The gap to next review roughly doubles. One mastery pip fills.
⭐
5 correct recalls = Mastered
Each word has 5 mastery pips. One fills every time you rate it Easy — but they must be spaced out. Cramming doesn't count.
Word mastery — EPHEMERAL
Rate "Again" and the pip empties back. Mastery is earned through real spaced recall — not just tapping through cards fast.
🚀
You're ready.
Be honest with your ratings — the system only works if you are. A word you fake-Easy today will trip you up on test day.
You can re-read this anytime in ⚙️ Settings
Card Front
9:41
📶 🔋
Flashcard
🔥 121,340 XP
Word 6 of 2030% today
Sounds likeeh·FEM·er·ul
🦋
EPHEMERAL
adjective
tap to reveal →
EPHEMERAL adjective
lasting for only a very short time
🔑 A butterfly lives just weeks — its beauty is ephemeral. "e-FEM-eral" sounds like a trend from a past era — gone before it started.
"Her ephemeral fame faded by August — one viral video, then silence."
🃏
Learn
📊
Progress
🏆
Rank
⚙️
Settings
Settings
🧠
How it works
Spaced repetition explained
›
🔔
Daily reminder
🔊
Auto-pronounce words
How it works
🔁 Spaced repetition
WordUp shows you each word at the exact moment you're about to forget it — not too soon, not too late. This is proven to build long-term memory faster than re-reading lists.
⏱ What the rating buttons mean
😬
Again — back in 10 minutes
Didn't remember it at all. See it again very soon.
🤔
Hard — see you tomorrow
Almost had it. Come back in a day to reinforce.
😎
Easy — see you in 4 days
Nailed it. The gap widens each time you get it right.
📈 Why it works
Research from Duolingo (12 million study sessions) shows adaptive spacing outperforms fixed review schedules. The keyword + image method produces up to 3× better retention than rote memorization.
Question
9:41
📶 🔋
Quiz
⏱ 12s
Question 3 of 10+10 XP per correct
SYCOPHANT
SIK·uh·fant
🃏
Learn
📊
Progress
🏆
Rank
⚙️
Settings
Match Pairs
9:41
📶 🔋
Match
⏱ 0:34
⚡ Speed bonus under 45sMatched: 2/6
EPHEMERAL
SYCOPHANT
LOQUACIOUS
PERFIDIOUS
INSIPID
TENACIOUS
lasting only briefly
deceitful and disloyal
a flattering yes-person
persistent and determined
excessively talkative
lacking flavor or interest
🃏
Learn
📊
Progress
🏆
Rank
⚙️
Settings
Blitz Mode
9:41
📶 🔋
⚡ Blitz
Score: 300
6
GARRULOUS
GAR·oo·lus
excessively talkative, especially on trivial matters
🃏
Learn
📊
Progress
🏆
Rank
⚙️
Settings
XP & Mastery
9:41
📶 🔋
Progress
⚡ XP & Level
Lv. 7
Wordsmith
1,340 / 2,000 XP to Level 8
Correct answer+10 XP
Streak multiplier 🔥5+×1.5 XP
Boss Battle win+100 XP
Perfect Blitz round+50 XP
⭐ Word Mastery
EPHEMERAL
Mastered
SYCOPHANT
Strong
GARRULOUS
Familiar
PERFIDIOUS
Learning
INSIPID
New
🃏
Learn
📊
Progress
🏆
Rank
⚙️
Settings
Streak & Badges
9:41
📶 🔋
Achievements
🔥 Daily Streak
M
🔥
T
🔥
W
🔥
Th
🔥
F
🔥
Sa
○
Su
○
12day streak
🧊 Freeze tokens: 2miss a day, use one
🎖 Badges
🔥
10-Day Streak
🧠
50 Mastered
⚡
Perfect Blitz
🏆
Top 10 Week
🌙
Night Owl
💯
100 Mastered
🐉
Boss Slayer
🎓
SAT Ready
🃏
Learn
📊
Progress
🏆
Rank
⚙️
Settings
Boss Battle
9:41
📶 🔋
⚔️ Boss Battle
🐉
Set 2 Boss
The Verbose Dragon
Boss HP55%
The politician surrounded himself with ___ advisors who only told him what he wanted to hear.
🏅 This Week
🥇
🦊
StudyFox99
32 mastered
4,820
🥈
🐺
VocabWolf
29 mastered
4,210
4
🐻
You 🔥12
18 mastered
1,340
🃏
Learn
📊
Progress
🏆
Rank
⚙️
Settings
Paywall
9:41
📶 🔋
🎉 You've mastered 30 free words!
Keep your momentum going
You're on a 🔥 12-day streak. Don't stop now.
Tier 1
$0.99
✅ 200 words
✅ All 4 modes
✅ Visual cards
✅ Streaks & XP
Tier 1 + 2
$2.98
✅ 1,000 words
✅ Everything +
✅ Boss battles
✅ Leaderboard