Most language learning push notifications are useless. Generic reminders ("Time to practice!") get disabled within days. The apps that use push notifications well build real vocabulary retention over time. Here are the best options.
What Makes a Push Notification Useful for Language Learning
A useful language learning notification delivers a specific vocabulary item for active recall. The word is one you have already seen, it appears at the right spaced repetition interval, and it requires you to think - not just glance. Notifications that just remind you to open the app have near-zero learning value.
TransLearn
TransLearn builds its notification system around your personal vocabulary - words you save while reading EPUB or PDF content in your target language. Notifications review those specific words throughout the day at spaced intervals. Since every word has reading context behind it, the recall quality is higher than generic word lists. Notification frequency is user-configurable.
Anki Mobile
Anki is the benchmark for spaced repetition flashcards. AnkiMobile (iOS) and AnkiDroid send review reminders when cards are due - the notification prompts you to open the app and complete your due reviews. Learning quality is excellent. Downside: setup is manual and requires importing or creating decks.
Duolingo
Duolingo's notifications are streak reminders, not vocabulary delivery. Their primary function is preventing streak breaks, not teaching vocabulary. Gamification keeps many learners consistent, which has indirect value. Do not rely on Duolingo notifications for vocabulary retention.
Babbel
Babbel sends spaced repetition review reminders for completed lessons. More grammar-integrated than Duolingo. Notifications prompt vocabulary review within the app. Good for learners who want structured curriculum alongside review.
Lingvist
Lingvist's algorithm models the forgetting curve and sends review reminders timed to when retention is predicted to drop. Example sentences accompany each word. The notification system is among the most research-grounded in the category.
Best Practice: Stack Input With Notification Review
Read in your target language daily to generate vocabulary. Save words as you encounter them. Let notifications handle the review layer. This input-plus-review stack outperforms any single app approach. TransLearn and Anki complement each other well for this workflow - TransLearn for reading input and personal vocabulary notifications, Anki for high-priority items needing precise memorization.