Echo: Flashcards & Study Plan

Salty Yak Apps

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About this app

Study smarter, remember more, and feel ready for every exam.

Echo is a focused flashcard app that helps you build long-term memory with smart spaced repetition, personal study goals, and flexible review tools. Whether you are preparing for school, university, language learning, medical study, music practice, or a certification exam, Echo helps you turn what you learn into knowledge that lasts.

Smart flashcards for real learning

Create flashcards that match the way you study. Use text for definitions, images for diagrams, drawings for visual notes, and audio for pronunciation, listening practice, music, or recorded examples.

Echo supports cloze deletions, reverse card pairs, and multiple audio clips per card, so you can practice active recall in the format that works best for each subject.

Spaced repetition that adapts to you

Echo uses FSRS, a modern spaced repetition system designed to help you review at the right time. After each card, your rating helps Echo estimate how well you know it and schedule the next review when it matters most.

You can also choose Echo-SRS or fixed review intervals for each deck. Set different learning rhythms for different subjects, from daily practice to weekly review.

Study plans built around your goals

Every deck can have its own study plan. Add your test date, target confidence, study frequency, and preferred card order. Echo helps you stay on track by planning your study around the goal you actually care about.

Instead of guessing what to review next, open a deck and start the session Echo has prepared for you.

Test yourself without changing your schedule

Need a confidence check before an exam or quiz? Test mode lets you run through a deck for a pass/fail score without affecting your spaced repetition schedule.

Use it to see what you know, find weak spots, and practice under pressure before the real test.

Study offline anywhere

Echo keeps your decks on your device, so you can study without a signal after your cards are loaded. Review on the bus, train, plane, campus, library, or anywhere you have a few minutes to focus.

Track your progress

See how your memory is improving with mastery progress and recall graphs for each deck. Build a consistent habit with streak reminders and study notifications that help you keep learning day by day.

Why students choose Echo:

• Smart flashcards for any subject
• Spaced repetition with FSRS, Echo-SRS, or fixed intervals
• Personal study plans for exams and deadlines
• Text, image, drawing, and audio flashcards
• Multiple audio clips per card
• Cloze deletions and reverse card pairs
• Test mode for confidence checks
• Mastery progress and recall graphs
• Streak reminders and study notifications
• Offline study on your device
• Import existing .apkg decks when needed

Echo helps you stop cramming and start remembering.

Open Echo, pick a deck, and study with a plan that adapts to you.

What’s new

Echo is now on Google Play — adaptive flashcard study that schedules reviews at the right time.

• FSRS-powered scheduling
• Rich cards with audio and images
• Deadline planning for exam prep
• Streaks, badges, and reminders
• 100% on-device — your data stays yours