Build Vocabulary While You Sleep
Struggling to remember new words? SomniCue uses Targeted Memory Reactivation to reinforce vocabulary during deep sleep. Learn during the day, consolidate at night.
Works with any language • Free tier available • iOS 17+
Tonight's Review
mariposa
butterfly
bibliothèque
library
桜 (さくら)
cherry blossom
Schmetterling
butterfly
12 cues scheduled for tonight
Works with any language you're learning
The Vocabulary Problem
You know the feeling—you learn 50 new words, but a week later you've forgotten half of them.
The Forgetting Curve
Without reinforcement, you forget 70% of new vocabulary within 24 hours. By week's end, it's even worse.
Not Enough Time
Between work, life, and study sessions, there's barely time to learn new words—let alone review old ones.
Wasted Sleep Hours
You spend 6-8 hours sleeping every night. What if that time could reinforce your vocabulary?
Turn Sleep Into Study Time
SomniCue uses Targeted Memory Reactivation (TMR)—a neuroscience technique that plays subtle audio cues during deep sleep to strengthen specific memories.
Learn During the Day
Study new vocabulary with SomniCue's Study Mode. Audio cues create associations with each word.
Reinforce at Night
While you sleep, SomniCue detects deep sleep and replays cues at the perfect moment.
Wake Up Remembering
The cues trigger memory replay in your brain, strengthening those word connections.
How TMR Helps Vocabulary
You hear a cue while studying 'mariposa = butterfly'
Smart Watch detects you're in deep sleep (N3 stage)
The same cue plays softly—your brain reactivates 'mariposa'
Neural pathways for that word are strengthened overnight
What Can You Reinforce?
SomniCue works for any declarative memory—anything you need to recall.
Vocabulary Building
New words, phrases, and expressions. Perfect for expanding your active vocabulary.
Grammar Patterns
Verb conjugations, sentence structures, and grammatical rules that need drilling.
Conversation Phrases
Common phrases, idioms, and expressions for real-world conversations.
Pronunciation
Pair audio cues with pronunciation practice during study mode.
Language Learners Love SomniCue
"I've been stuck at intermediate Spanish for years. SomniCue helped me finally push through the plateau. My vocab retention is noticeably better."
Alex T.
Learning Spanish, 8 months
"Japanese kanji was my nightmare. I add 5 new kanji to SomniCue each day and let it reinforce them overnight. Game changer for retention."
Michelle L.
Learning Japanese, JLPT N3
"The Flicker Trigger is perfect for marking words I keep forgetting. They get priority replay and actually stick now."
David R.
Learning French, B2 level
Fits Your Existing Routine
SomniCue enhances any language learning method. Keep using what works.
Duolingo
Add tricky words from lessons to SomniCue
Anki
Reinforce your hardest flashcards overnight
Babbel
Let TMR cement grammar patterns
Classes
Review vocab from your tutor sessions
Frequently Asked Questions
Which languages can I learn with SomniCue?
SomniCue works with any language! You create your own vocabulary items, so it works for Spanish, French, Japanese, Mandarin, German, or any language you're studying. The TMR technique is language-agnostic.
Is this the same as playing language podcasts while sleeping?
No—that doesn't work. TMR uses brief audio cues (not content) that were associated with vocabulary during study. These cues trigger your brain to replay and strengthen those specific word memories during deep sleep.
How many words can I learn per night?
We recommend focusing on 10-20 words at a time with SomniCue reinforcing 3-5 items per night. Quality matters more than quantity—deeply encoded words stick better than surface-level exposure to hundreds.
Can I use this with Duolingo or other apps?
Absolutely! SomniCue complements your existing study routine. Learn new words with Duolingo/Babbel during the day, add tricky vocabulary to SomniCue, and let TMR reinforce them overnight.
How long until I see results?
Most users report improved recall within 1-2 weeks of consistent use. The key is pairing daytime study with overnight reinforcement—TMR enhances consolidation but doesn't replace active learning.
Start Building Vocabulary Tonight
Download SomniCue free and supercharge your language learning with science-backed sleep reinforcement.