Frequently Asked Questions

Penguen.io is a free flashcard app that helps you memorize words and improve your vocabulary knowledge in a simple, effective way.

Yes. Penguen.io is completely free to use. There are no subscription fees, no pricing plans, and no ads.

Penguen.io is for anyone who wants to build vocabulary, remember new words faster, and practice through interactive learning activities.

First, you select your native language. Then you study using collections, which are organised groups of flashcards designed to help you learn words step by step.

A collection is a group of flashcards focused on a specific topic or learning set.

Each collection is divided into levels, and each level contains smaller groups. Each group includes 20 words, making learning manageable and structured.

Yes. You can view the word list for an entire collection, or the word list for a single group. This helps you preview and review vocabulary at any time.

Yes. You can add words to your favourites so you can come back to them anytime.

Yes. Penguen.io includes a flashcard mode so you can review words in a simple and familiar format.

Penguen.io offers multiple study activities to help you learn in different ways, including: Flashcards, Dictations, Listen & Choose, Fill Letters, Matches, Multiple Choice, and Test. These activities help improve memory, listening, recognition, spelling, and recall.

In Dictation mode, you listen and write what you hear. This helps improve spelling, listening, and word recall.

In Listen & Choose, you listen to a word and choose the correct answer. This is useful for practicing listening comprehension and recognition.

In Fill Letters, you complete missing letters in a word. This helps strengthen spelling and memory.

In Matches, you connect related items correctly. This is a fast and interactive way to improve word recognition.

In Multiple Choice, you choose the correct answer from several options. This helps test your understanding quickly and clearly.

Test mode helps you check how much you remember after studying. It is designed to measure your progress and reinforce learning.

Yes. Penguen.io lets you view your stats so you can see how you are improving over time.

Yes. You can check your activity history to review your past learning activity and stay consistent.

Yes. Penguen.io includes an Achievement feature to reward your progress and keep you motivated.

Yes. Penguen.io has a leaderboard where you can compare your progress and performance with other learners.

You can sign up using your email address and a password, or sign up instantly with your Google account. After registering with email, you will receive a verification email to activate your account.

Yes. After signing up with email, you will receive a verification link. You need to click the link to activate your account. The verification link expires after 24 hours.

Check your spam or junk folder first. If you still don't see it, you can request a new verification email from the resend verification page. Make sure the email address you entered is correct.

Yes. You can sign up and log in using your Google account. No separate password or email verification is needed when using Google sign-in.

Your password must be at least 8 characters long. We recommend using a mix of letters, numbers, and symbols for better security.

Yes. You can delete your account from your profile page. You will need to confirm your email address before the deletion is processed. Please note that this action is permanent and cannot be undone.

Go to the login page and click "Forgot Password." Enter your email address, and you will receive a password reset link. Click the link and set your new password.

The password reset link expires after 1 hour. If your link has expired, you can request a new one from the forgot password page.

Check your spam or junk folder. If you still don't see it, wait at least 10 minutes before requesting another reset link. Make sure you are entering the correct email address associated with your account.

There is a 10-minute cooldown between password reset requests. This is to protect your account from abuse. After 10 minutes, you can request a new link.

Yes. Your passwords are securely encrypted and never stored in plain text. Your personal information and learning progress are protected and never shared with third parties.

Yes. You can add a bio, set your display name, and control your privacy settings from your profile page. You can choose whether to show your email, join date, and native language to other users.

Yes. Your profile is public, but you control what information is visible. You can toggle the visibility of your email address, join date, and native language from your privacy settings.

When you first log in, you will be asked to select your native language. You can change it anytime from the language selector on the dashboard. This setting determines which collections are shown to you.

The activity heatmap shows your learning activity over the past 365 days. Each square represents a day, and the color intensity shows how active you were. It helps you stay consistent and track your daily habit.

A streak is the number of consecutive days you have completed at least one practice session. If you miss a day, your current streak resets to zero, but your best streak is always saved.

A word is considered mastered when you have correctly answered it enough times to reach a high mastery level. Mastered words show that you have strong recall and understanding of that word.

Accuracy is calculated based on the percentage of correct answers across your practice sessions for a specific group or collection. It helps you identify areas where you need more practice.

Yes. You can view detailed statistics for each group, including total words, words studied, words mastered, accuracy, hard words, current streak, and total practice sessions.

Penguen.io makes vocabulary learning simple, structured, interactive, motivating, and completely free and ad-free. It gives you different ways to practice so learning stays effective and engaging.

No. All core features are available without payment.

No. Penguen.io is ad-free, so you can focus on learning without distractions.

By combining structured word groups, multiple practice modes, progress tracking, and review tools, Penguen.io helps you memorize words more effectively and build stronger vocabulary knowledge.

You can reach us through our contact form. Choose a topic (General Inquiry, Technical Support, or Billing), describe your question, and we will get back to you as soon as possible. You can also email us at support@penguen.io.

You can use the "Report Issue" button available on practice pages, or visit our contact form and select "Technical Support" as the topic. Please include as much detail as possible so we can help you quickly.