LangLearn: Live Language

LangLearn turns PDFs, text files, pasted passages, and original AI-generated learning articles into an interactive bilingual study workspace. Read source text and its translation together. Tap a word, double-tap a sentence, triple-tap a paragraph, or select a longer range to hear it naturally and repeat it at your own pace. Sentence-level highlighting follows continuous playback in both panes. Practice conversation with an optional realtime Assistant. Keep replies silent for an unobtrusive conversation helper, or enable spoken responses for a coach or another role you configure. Highlights: • Synchronized bilingual reading for configurable supported language pairs • PDF text extraction with OCR fallback for scanned pages • Qwen-powered learning articles with built-in categories, levels, custom prompts, and reusable configurations • Word, sentence, paragraph, and continuous-document playback • Local Apple translation and voices when supported • Optional personal Aliyun provider key stored in iOS Keychain • Optional LangLearn Cloud account with a one-time ten-minute trial and usage-bounded App Store cloud-time purchases • Persistent on-device documents and Assistant sessions • Explicit provider, microphone, voice-output, and privacy controls The Reader does not require registration. Cloud providers are opt-in and are never selected as a silent fallback. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/