Getting Started with LangBlitz

This guide walks through everything that happens the first time you open LangBlitz, from installing the app to finishing your first review session. If you have already been using the app for a while, most of this will be familiar, but the section on CEFR levels near the end is worth reading even for existing users, since it explains a distinction (practice level versus mastery) that trips people up later on.

Installing LangBlitz

LangBlitz is an Android app, available on the Google Play Store. Installation works the same way as any other app: search for LangBlitz, tap install, and open it once the download finishes. No account creation step follows. You are taken directly into the app, and the first thing you see is the placement quiz.

There is no sign up form, no email verification, and no password to remember. This is intentional. LangBlitz stores your progress locally on your device rather than in a cloud account, which means faster setup and no data collection tied to a personal identity, but it also means backing up your progress before switching phones is something you have to do yourself. That process is covered in a separate guide, and it is worth reading before you invest weeks of study into the app, not after.

The Placement Quiz

The placement quiz is fifteen words shown one at a time. For each word, you simply tap one of two options: "New to me" if you do not recognize the word or are not confident you know what it means, or "I know it" if you do. There is no typing, no multiple choice, and no penalty for guessing wrong in either direction, since the point of this quiz is only to quickly tell whether you are starting from scratch or already have some basic foundation, not to rigorously measure how far your vocabulary actually extends.

The fifteen words are all drawn from beginner range vocabulary, some words most English speakers know by the time they finish basic schooling, others slightly less common but still elementary level. How many of them you already recognize determines whether you start at A1 (beginner) or A2 (elementary). The quiz is deliberately narrow in what it measures: it is built to catch that one distinction reliably, not to place you anywhere across the full CEFR range from fifteen yes or no answers, which would not be a reliable enough signal to build a whole learning path on. Everything from B1 upward is something you earn through automatic level progression as you actually study, not something the placement quiz guesses at upfront.

It is still worth answering honestly rather than trying to mark words as known that you are not genuinely comfortable with. Starting at A2 when you are really at A1 still means your first review sessions introduce new words a step above where you actually are, which tends to be frustrating rather than motivating. The app also has a Fast-track Level Up test built for exactly the situation where you want to skip ahead later once you have proven you actually know the material, so there is no real advantage to inflating your placement quiz answers.

Understanding CEFR Levels

CEFR stands for the Common European Framework of Reference for Languages, and it is the standard scale used across most serious English learning and testing contexts, including many of the exams LangBlitz's exam prep tags are built around. LangBlitz uses six levels, from A1 up through C2.

A1 is the beginner level, covering the most basic, everyday vocabulary. A2 is elementary, still fairly basic but broader. B1 is intermediate, the level where most people can hold a real conversation and handle everyday situations comfortably, though not with much nuance. B2 is upper intermediate, where vocabulary starts to include more abstract and less common everyday words. C1 is advanced, the level most competitive university programs and many professional contexts expect. C2 is mastery, close to or at the level of vocabulary sophistication a highly educated native speaker would have.

Right after the placement quiz, LangBlitz shows you the level it has assigned based on your answers, along with a short explanation of what that level means. This becomes your starting practice level, the level new words are drawn from by default when you begin review sessions.

Your practice level is not permanent or locked in stone. It is meant to move as you improve. LangBlitz supports both automatic progression, where the app advances your level on its own once you have introduced and reviewed enough of the current level's words with strong enough retention, and manual progression, where you take the Fast-track Level Up test whenever you decide you are ready, rather than waiting for the automatic threshold. Which mode is active is a setting you control, covered in more detail in the Daily Quiz and Practice Quiz guide, since the Fast-track test lives in that same part of the app.

One distinction worth understanding early: your practice level and your mastery are tracked separately, even though they are related. Your practice level determines which CEFR band new words get pulled from when you learn something you have never seen before. Your mastery, which you can see on the home screen as a set of progress rings for each CEFR level and in more visual detail inside Vocabulary World, reflects how well you currently remember the words you have already been introduced to, based on the spaced repetition algorithm's read on your memory strength for each one. You can be at practice level B1 while still holding strong A1 and A2 mastery from earlier, and that same A1 mastery can quietly decay if you go a long time without reviewing those words, even though your practice level has moved on to harder material. That is expected behavior, and it is the entire reason the spaced repetition system exists in the first place: to bring older words back for review right as you are about to forget them, regardless of what level you are currently learning new words at.

The Home Screen

After the placement quiz, you land on the home screen, which stays the center of the app for as long as you use it. A few things are worth knowing about what you see here on day one.

At the top is your current practice level and your streak, which starts at zero days until you complete your first full review session. Below that are several action buttons: Daily Quiz, Practice Quiz, Fast-track Level Up, Explore Word Groups, and a large button that says either "Learn new words" or "Start review" depending on whether you have due reviews yet, which you will not on your very first visit since nothing has been introduced to review.

Practice Quiz and Fast-track Level Up show a small lock icon if you are on the free tier, since both are premium features. Daily Quiz and Explore Word Groups are available to everyone regardless of tier. Tapping the large "Learn new words" button on your first visit starts your first review session, drawing new words from your assigned practice level.

Further down the home screen, you will see progress rings for each CEFR level, all showing zero percent until you begin studying, and a Word of the Day card that shows a single featured word and definition, refreshed daily and visible even to free users who have not unlocked the full word library yet.

Your First Review Session

When you start your first session, you will see a word card. The front shows the word itself along with its phonetic pronunciation. Tapping the card reveals the back: a full definition, a nuance note explaining subtle shades of meaning or usage that a plain dictionary definition would miss, an example sentence showing the word used in context, and depending on the word, additional details like synonyms, antonyms, related words, or a memory aid.

After reading the back of the card, you rate how well you knew it using four options: Again, Hard, Good, or Easy. Again means you did not know it or got it wrong, and the word will come back to you again soon, often within the same day or the next one. Hard means you knew it but it took real effort or you were not fully confident. Good means you knew it comfortably. Easy means you knew it instantly and it felt too easy for where the app currently has it scheduled. These four ratings feed directly into the FSRS scheduling algorithm, which is covered in full detail in a separate guide, and they are what determine exactly when each word comes back to you next.

There is no way to get a rating "wrong" in the sense of breaking anything. The ratings exist purely to give the algorithm an honest signal about your memory for that specific word, and rating generously or harshly will simply shift when that word reappears, not affect any score or grade.

What to Do in Your First Week

A few habits early on make a real difference in how well spaced repetition works for you over the following months. Try to review daily rather than in occasional large batches, since the algorithm is built around consistent, spaced exposure rather than cramming. Keep the default new words per session setting for at least the first week or two before increasing it, so you can get a feel for how large your daily review backlog becomes as new words start coming due again. And take the Daily Quiz each day if you can, since it is free for everyone and gives you a quick secondary check on retention beyond just the review session.

From here, the natural next guide to read is the one on spaced repetition and FSRS, which explains in detail what is actually happening behind the scenes every time you rate a card, and why the interval between reviews changes the way it does over time.