Learn TOP 5000* Russian words in 1 yearLearn TOP 5000** ~95% of everyday RussianRussian words in 1 year
* ~95% of everyday Russian
With just 10-15 minutes a day
Why exactly 5000 frequent words?
In Russian, not all words are equally important. The 5000 most frequent words are the base that can cover up to 95% of everyday Russian. Russian stops feeling like a wall of unknown words.
Cambridge research: understanding a language requires knowing ≈95–98% of words
CORE95 helps you master 95% (5,000 Russian words) in just one year. It is the foundation for confident communication and understanding the main idea.
Want more? Want to have deep conversations and understand complex texts? 98% (8,000 Russian words) is enough. It takes less than one more year with CORE95.
Open the Cambridge researchWhy is it so hard to learn words?
The problem is forgetting.
Without repetition, words disappear from memory before they become part of your speech.
You can honestly learn a word today and fail to recall it a few days later. That is not a motivation failure. It is normal memory behavior: new information fades quickly unless it returns on time.
Ordinary word lists do not solve the main problem: they do not tell you when each word must return so it does not disappear.
CORE95 breaks the forgetting curve
Smart spaced repetition brings a word back before it fully drops out of memory.
Our method is based on Hermann Ebbinghaus’s forgetting curve
Hermann Ebbinghaus was a German psychologist and one of the first researchers to study memory experimentally. He described how quickly people forget new information without repetition. Spaced repetition builds on this principle: return material not randomly, but at the moment memory starts to weaken.
Repetition is the mother of learning
But the point is not just to repeat. The point is to repeat at the right moment.
CORE95 brings a word back exactly when you start to forget it
You do not need to remember when to repeat each word. CORE95 shows new words, checks answers, returns difficult words sooner, and gradually moves familiar words further away.
You are not just going through a list. You are building vocabulary memory.
Shows a new word
You get words from the frequency core, not random noise.
Checks the answer
The system understands whether the word is stable or slipping away.
Returns difficult words
Made a mistake? The card returns sooner while memory can still be rescued.
Extends intervals
If the word is easy to recall, it moves further away and stops getting in the way.
Intervals grow with your memory
This is a practical use of the Ebbinghaus forgetting curve: hard words return quickly, familiar words move further away. CORE95 does not force you to repeat everything. It adapts the schedule to how well you remember each word.
30 sec
a quick check while the word is still in short-term memory
2 min
catch the first forgetting point and bring the word back up
10 min
fix the first memory trace if the word comes back without a hint
1 hour
check whether the word survived a normal pause
1 day
move the word from today’s memory into tomorrow’s memory
3 days
if the word holds, the interval can grow noticeably
1 week
the word no longer interrupts every day, but is still controlled
2 weeks
memory becomes more stable and the next review moves further away
1 month
the word passes its first long pause
2 months
check that knowledge did not fall apart without frequent training
4 months
the word is close to long-term memory
8 months
the final check before the yearly interval
1 year
the word is considered learned
1.5 years
rare reinforcement so knowledge does not disappear over the years
2 years
long-term fixation without putting pressure on the user
3 years
deep retention for your vocabulary base
Try for free
First 150 for your level free forever. If the format works for you, unlock the full 5000-word program for ≈ $15.
Try the magic of spaced repetitionTry the magic
of spaced repetition
Nobody can learn words for you
Not a tutor, not YouTube lessons. Only daily repetition work does that.
CORE95 helps with this in the best possible way.
Smart spaced repetition gives you the word at the ideal moment based on how well you remember it.
Hard words return more often. Familiar words return less often. Repetition becomes a system.
These cards already include both new words and old repetitions.
10-14 minutes per day
You choose the daily target, and the app mixes new words and old reviews based on your progress.
About 12-13 months at the current daily target. The higher the pace, the faster you close the frequency core.
Mistake #1 — focusing on grammar
Rules can be understood quickly. But you can only speak and understand with the words already stored in memory.
It helps connect thoughts. But by itself, it does not give you material for speech.
Without words, there is nothing to build, say, or understand. That is why CORE95 closes the vocabulary foundation first.
You will not start speaking until enough words are automatic in long-term memory
Mistake #2 — trusting a system that sells the process, not the result
Most apps, courses, and lessons create a strong feeling of learning: streaks, new topics, polished exercises, long programs. But they are not forced to bring specific words into long-term memory.
Duolingo is good at building a habit. Anki can repeat. A tutor can highlight mistakes. CORE95 solves a different task: it gives you the right words, checks your answer, and brings them back when memory starts to fade.
Why Duolingo does not build vocabulary progress
Duolingo is good at building a habit, but games, lessons, and streaks do not automatically move specific words into long-term memory.
Why a tutor cannot learn words for you
A teacher can explain mistakes and grammar, but long-term memory is built only by your repetitions.
Why YouTube lessons are forgotten quickly
A video gives understanding in the moment, but without repetition the material disappears within days.
Why Anki works but does not fit everyone
The repetition system is strong, but you must find decks, configure the process, and maintain discipline yourself.
Articles that change how you learn languages
We break down myths, research, and learning mechanics so you can focus on what works — not just what feels like progress.
Risk-free test drive: the first 150 words are free
This is not just a word list. It is a full first learning cycle. You will see whether the format fits you and how the repetition system works.
We are just launching, so early users get a lower price as a bonus for trust and early feedback.
150 words
First training cycles without payment and without a card.
- 150 most important words
- smart training and spaced repetition
- first measurable progress
- format check without payment or risk
≈ $15 / year
Early price for trusting the product at launch. One tutor lesson can cost more than a full year of CORE95.
- 5000 frequent Russian words
- training without time limits
- full progress statistics
- all future updates during the yearly access period
You control renewal yourself. No hidden auto-charges.
≈ $29 / year
Standard price after the first 50 paid users.
- same 5000 frequent-word base
- same smart repetitions
- same progress statistics
- yearly access without hidden charges
This price starts after the first 50 special-price seats are gone.
CORE95 development roadmap
Russian: top 5000 high-frequency words
The Russian core is already built: 5000 frequent words, training, progress tracking, and spaced repetition as the foundation of the product.
Core languages after Russian
We add the most requested directions first: Spanish, French, and German. This expands the product without losing focus.
Phrasal verbs and common chunks
After single words, we add chunks: phrasal verbs, collocations, and common phrases that actually appear in speech.
37 languages in the same system
After the first wave, we expand the language base to the full app set: more languages, the same repetition principle, and the same focus on memory.
Tenses and grammar through spaced repetition
The next layer after words and phrases is grammar patterns: tenses, forms, and sentence structures. They also need to return at the right moment until they become automatic.
CORE95 will grow around one principle: spaced repetition
Words, phrases, and grammar stay in memory better when they return at the right moment. New languages, phrasal verbs, and grammar will not be separate courses, but a system of knowledge that returns on time and stays active.
Learn even without internet
CORE95 keeps the needed words and progress on the device. You can open training on the road, in the subway, or on a plane. Internet should not break the habit.
Word buffer on your phone
Upcoming cards are ready locally, so training does not have to wait for the network.
Progress is saved
Answers and repetitions stay on the device even if the connection disappears.
Sync later
When internet returns, data goes to the cloud and pulls the current state.
Common questions before you start
Short answers about purchase, app installation, offline mode, and what to expect from the first version.
Is this an automatic subscription?
No. This is payment for 1 year of access. We do not charge automatically. After a year, you decide whether to continue.
Why about $15 per year?
Because CORE95 is not an expensive course or tutor lessons. It is a focused vocabulary tool, and the yearly price keeps it accessible for early users.
Will I definitely learn 5000 words?
The program is designed to go through 5000 frequent words with regular practice. The result depends on your consistency and honest repetition.
Why not just download a word list?
A word list does not bring words back into memory on time. CORE95 does not just show words. It builds repetitions and progress.
How is the app installed now?
CORE95 is available on RuStore — the Russian app store. Installation is just like any regular app, no extra permissions needed. You can also download the APK directly from the site.
Do I need internet for training?
No. Training can work offline: words and progress are saved on the device. Internet is needed for cloud sync and updates.
Why is it not fully free?
The first 150 words are free so you can check the format. Premium unlocks the full base and supports product development.
Will there be grammar?
Yes, it may appear later. But the first focus of CORE95 is the vocabulary core. Without words, grammar is a scheme without material.
Try for free
First 150 for your level free forever. If the format works for you, unlock the full 5000-word program for ≈ $15.