Frequently Asked Questions
Everything you need to know about our science-based approach to learning.
AI & Technology
We use advanced large language models to generate all content — articles, grammar exercises, conversations, phrase books, and feedback. Every piece of content is calibrated to your CEFR level and generated fresh, so you always have new material to work with.
Yes. AI generates new content on every request. You'll never see the same Reading Lab article or U Translate paragraph twice. This means unlimited practice material that stays fresh and challenging.
Language Partner uses a combination of speech recognition and AI language models to enable real-time voice conversations. The AI understands your spoken input, responds naturally, and can correct your pronunciation and grammar in real time.
Features & Tools
The Reading Lab uses AI to generate fresh articles matched to your CEFR level on topics you choose. While reading, you can tap any word to see its translation and instantly save it to your vocabulary for spaced-repetition review.
Language Partner lets you have real voice conversations with AI in three modes:
- Repeat Mode — Practice pronunciation by repeating phrases
- Conversation Mode — Free-flowing dialogue on any topic
- Office Hours — Ask any language question and get a detailed explanation
AI generates a paragraph in English. You translate it sentence by sentence into your target language. After each sentence, you get instant detailed feedback on grammar, word choice, and natural phrasing. It's one of the most effective active-recall exercises in the app.
Testing Tenses provides language-specific grammar drills tailored to each language's unique challenges — Spanish subjunctive, Japanese politeness levels, German cases, French past tenses, and more. Exercises are generated by AI at your CEFR level.
Spin the wheel and land on one of 8 categories. Answer trivia questions written entirely in your target language. It's a fun, low-pressure way to build reading comprehension and pick up cultural knowledge.
The library includes 9 curated phrase books covering essential topics like travel, dining, business, emergencies, and daily life. Each phrase includes audio pronunciation and can be saved to your vocabulary.
Yes! You can ask the AI to generate a complete phrase book on any topic — medical terminology, wine vocabulary, sports, cooking, tech jargon — instantly created at your CEFR level.
Professor Mode is available from any screen in the app. Activate it whenever you're confused about a grammar rule, verb conjugation, or usage question. You'll get a clear, detailed explanation tailored to your level — like having a language tutor on speed dial.
Every word you tap across any tool is automatically saved to My Vocabulary. Each word comes with:
- AI-generated example sentences
- Mnemonic memory aids
- Native audio pronunciation
- Spaced-repetition scheduling (SM-2 algorithm)
Getting Started
ScienceBasedLearning is an AI-powered language learning app that combines cognitive science (spaced repetition, active recall) with 7 interactive tools — from voice conversations to grammar drills to AI-generated reading. Available for iPhone with support for 15 languages at CEFR levels A1 through C2.
We currently support 15 languages: Chinese, Dutch, French, German, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Spanish, Swedish, Turkish, and Ukrainian. More languages are added regularly.
CEFR (Common European Framework of Reference) is the international standard for measuring language proficiency, from A1 (complete beginner) to C2 (mastery). When you set your level, all content — reading articles, grammar drills, conversations — is automatically calibrated to match. You can change your level anytime as you progress.
Yes! You can download and use the app for free with access to core features. A Pro subscription unlocks unlimited AI content generation, all 7 tools without limits, and advanced vocabulary features.
Go to Settings in the app. You can switch your target language or adjust your CEFR level at any time. All content will immediately recalibrate to your new selection.
ScienceBasedLearning is currently available on iPhone via the App Store. iPad and Android versions are planned for future release.
Learning & Progress
We use the SM-2 algorithm, the gold standard in memory science. When you review a vocabulary word, the algorithm tracks how well you remembered it and schedules the next review at the optimal moment — right before you'd forget. Easy words get spaced further apart; difficult words come back sooner.
You set a daily learning goal (in minutes) when you start. The app tracks your time across all tools and shows your progress. Building a streak motivates consistency — the single most important factor in language learning.
Your dashboard shows daily goal completion, streak count, vocabulary size, and tool usage. You can see how many words you've mastered, how many are in review, and your overall activity trends over time.
Pricing & Subscription
The free version gives you access to explore the app and try all tools with daily limits. You can see how each tool works and experience the learning method before committing to Pro.
Pro removes all limits and unlocks the full power of the app:
- Unlimited AI content generation
- Unlimited voice conversations
- Unlimited vocabulary saves
- All grammar drill categories
- Custom book generation
- Full spaced-repetition features
We offer monthly and annual subscription plans. The annual plan offers significant savings. Check the app for current pricing.
Yes. Your subscription is tied to your Apple ID. On a new device, go to Settings and tap "Restore Purchases" to reactivate your Pro access instantly.
We are considering a lifetime purchase option for the future. Currently, we offer monthly and annual subscriptions. Follow us for announcements about new pricing options.