# 12levels: English Vocabulary — Learn words & keep them

> Science-based English vocabulary builder using spaced repetition and personalized levels. (iPhone/iPad app by Iuvenalii Khlopkov.)

- Source: https://appshunter.io/ios/app/12levels-english-vocabulary/id6769502514 (this page in markdown: same URL + `.md`)
- Developer: [Iuvenalii Khlopkov](https://appshunter.io/developer/1896663726)
- Category: Education, Reference
- Price: Free with in-app purchases
- Rating: 1.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 26.1 · 62 MB
- Languages: American English, Japanese, Russian, European Spanish
- Released: 2026-07-15
- Data updated: 2026-08-31
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/12levels-english-vocabulary/id6769502514/reviews.md

## What is 12levels?

12levels helps you build real English vocabulary — and actually keep it — with the science of memory.

Most apps make you cram. 12levels uses scientific spaced repetition (the open FSRS algorithm) to show you each word right before you'd forget it, so it moves into long-term memory with the least effort.

• Learn at your exact level — a precise CEFR ladder from A1.1 to C1.3, not a vague "beginner / intermediate."
• Read AI books and articles matched to your level. Tap any word for its meaning, an example, and American pronunciation.
• A real-time progress map of the words you already know.
• Keep your streak with goals and achievements.
• Your words on the Home Screen with a large widget.

Start with a 14-day free trial. Built on memory science. No ads.

Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings.

Terms of Use (EULA): https://12levels.app/legal/terms
Privacy Policy: https://12levels.app/legal/privacy

## Key features

- Spaced repetition learning
- Personalized CEFR levels
- AI-generated reading materials
- Real-time progress map
- Home screen widget
- Streak tracking

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| 12levels Pro — Yearly | $59.99 | per year |
| 12levels Pro — Monthly | $9.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 12levels Pro — Lifetime | $149.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/12levels-english-vocabulary/id6769502514/reviews.md

### 1/5 — Так нельзя. Мне нужен тестовый период

*2026-08-22*

Разработчик, ты теряешь деньги. Объясняю почему. Мне визуально зашло приложение, все круто. 

Тут предлагают пройти тренировку и сразу оплата, но с предложением пробного периода в 14 дней. 

И пробный период только, если только выберешь годовую подписку, а на счёте должно быть минимум 60 долларов. А с месячной подпиской такое не работает, тестовый режим не взять. 

А так хотелось проверить приложение и скорее всего купить. Хотя бы на месяц

**Developer response:** Пользователь 12levels: English Vocabulary, обращаем внимание, что у нас есть двухнедельный тестовый период.

Видим, что в вашей стране еще есть возможность попадать в мировой интернет и оставлять единички даже на те сервисы, которые крутые и вам нравятся. У вас удалось подменить регион устройства на USA и пробраться в магазин приложений.

Надеемся все же, что скоро этой возможности у вас не останется. Приложение рассчитано на другие страны.

Для остальных адекватных пользователей — мы рады вас видеть у нас, приложение действительно крутое, и есть щедрый тестовый период для платного функционала.

## Frequently asked questions about 12levels

### How does 12levels help me learn English vocabulary?

12levels uses the science of spaced repetition, specifically the FSRS algorithm, to show you words at optimal times before you forget them. This method moves vocabulary into your long-term memory with minimal effort.

### What are the learning levels in 12levels?

The app offers precise CEFR levels, ranging from A1.1 to C1.3, ensuring you learn at your exact proficiency. This is more specific than general beginner or intermediate labels.

### Can I read content in 12levels?

Yes, you can read AI-generated books and articles that are matched to your current learning level. You can tap any word for its meaning, an example sentence, and American pronunciation.

### Does 12levels have ads?

No, 12levels is ad-free. The app focuses on a distraction-free learning experience, built on memory science.

### What are the subscription options for 12levels Pro?

12levels Pro offers monthly and yearly subscription plans. The yearly plan costs $59.99 and includes a 14-day free trial.

### How do I manage or cancel my 12levels subscription?

Subscriptions auto-renew unless cancelled at least 24 hours before the current period ends. You can manage or cancel your subscription anytime through your App Store account settings.

### What devices does 12levels support?

Currently, 12levels is supported on iPhone devices. The app is designed to be accessible on iOS.

### How often is 12levels updated?

The latest version of 12levels is 1.0.5, which was last updated on August 24, 2026. Updates are released to improve features and performance.

## Version history (last 5 releases)

### 1.0.5 — 2026-08-24

Bug fixes and performance improvements.

### 1.0.4 — 2026-08-09

Bug fixes and performance improvements.

### 1.0.3 — 2026-07-31

12levels is now more accessible. Literally.
We improved VoiceOver, Voice Control, Larger Text, contrast, and Reduce Motion. Vocabulary scrolls more smoothly, Learn sessions survive a trip to the background, and the missing book covers are back.
We also fixed bugs and improved stability.
You can still forget English words. But now the app is less likely to help you do it.

### 1.0.2 — 2026-07-30

Сәлем, Қазақстан! Қош келдіңіздер! 
We’re thrilled to see so many active 12levels learners joining us from Kazakhstan.

In this version, some cards received memorable illustrations, while the library gained a new article that’s essential for your learning: “1250 Phrases for Natural English.”

Another premiere is experimental Tactile Pronunciation. We transformed IPA transcription into a consistent tactile alphabet: each English phoneme has a stable vibration pattern built around real phonetic features, including voicing, duration, stress, and manner of articulation.

The idea is grounded in multisensory learning: your brain receives information through sight, sound, and touch, creating an additional association for distinguishing and remembering sounds. Now you can not only see and hear a word’s transcription—you can feel it.

This is an experimental approach, but to the best of our knowledge, no mainstream language-learning app has turned transcription into a consistent tactile alphabet before. We’re already preparing a patent application.

We also fixed bugs and improved the app’s stability.

Illustrations can be disabled from the Vocabulary display menu. Tactile Pronunciation is off by default.

You can still forget English words. But now they can stay with you through touch, too.

### 1.0.1 — 2026-07-27

We rebuilt your first run: 12levels now finds your starting point more precisely and makes your personal plan easier to understand. We fixed a few bugs too.  
You can still forget English words. You’ll just have to try harder.

## More apps by Iuvenalii Khlopkov

- [Ommo: Breathwork & Calm](https://appshunter.io/ios/app/ommo-breathwork-and-calm/id6776748358)

All apps by Iuvenalii Khlopkov: https://appshunter.io/developer/1896663726

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-31.*