6 apps compared
Reading is where vocabulary finally sticks, but only if the text sits just above your level. Too easy teaches nothing; too hard becomes a dictionary exercise you abandon. These apps solve that in different ways.

Short answer
NativePal generates stories at your exact CEFR level with every word tappable and a comprehension quiz at the end, so the difficulty always matches you. LingQ is the better choice if you want volume and the ability to import your own articles, videos and books, and Memrise is strongest if you want short authentic native material rather than extended text.
1. Best all-round practice loop
The only app here that covers levelled reading, vocabulary with spaced repetition, pronunciation scored down to individual sounds, and conversation in one place. Free to start with a daily allowance.
Where it falls short: If you only want one narrow thing — pure audio, or pure flashcards — a specialist below will do that one thing better.
2. Best for reading volume
A large comprehensible-input library plus the ability to import your own articles, videos and books, with unknown words tracked as you read.
Where it falls short: The interface is dated and it does very little for pronunciation or structured beginner grammar.
3. Best for authentic native audio
Its Learn with Locals clips show real native speakers saying real phrases at real speed, which is the best authentic-audio vocabulary source in the category.
Where it falls short: Strong on vocabulary and listening, thin on grammar and extended reading.
4. Best for community corrections
Submit written and spoken exercises and get them corrected by native speakers, on CEFR-aligned courses with optional certificates.
Where it falls short: Correction turnaround depends on volunteers, so it is not instant feedback.
5. Best for structured grammar
Courses written by linguists rather than generated, with grammar explained properly instead of inferred from examples.
Where it falls short: Only covers around 14 languages, and the course ends well short of advanced.
6. Best for raw vocabulary retention
Free, open source, and the best spaced-repetition scheduling available anywhere. If your problem is that words do not stick, this is the tool.
Where it falls short: It is a flashcard engine, not a course: no lessons, no speaking practice, no curriculum, and you have to build or download decks yourself.
At a level where you understand most of it without help and meet a handful of unknown words per page. If you are stopping every sentence the text is too hard, and you will learn more from something easier read fluently. Generated content sidesteps this by being written to your level in the first place.
No. Look up words that block your understanding of the sentence or that keep recurring, and let the rest go. Tapping every unknown word turns reading into decoding and kills the pace that makes reading work.
It supplies the raw material. Reading is the cheapest way to meet a lot of language in context, and phrasing you have met repeatedly in reading becomes available when you speak. It does not replace speaking practice, but speaking practice without input runs dry fast.
Early on, yes, because authentic material is far above a beginner's level and produces frustration rather than learning. The goal is to move to authentic material as soon as you can handle it, which is why levelled content that rises with you is useful in between.
Levelled reading, vocabulary with spaced repetition, scored pronunciation and conversation in 57 languages.
Free to start. No account needed.