Is Lira trying to replace Readlang?

Not really. If most of your reading already happens inside a browser tab you want translated on the spot, Readlang's extension is a real convenience Lira doesn't try to copy. Lira is built for a different habit: reading imported texts on your phone or laptop, browser or not.

Does Lira have a mobile app like Readlang?

Lira isn't a native app either. It's a web app that works fully in your phone's browser and can be installed to your home screen, so reading and translating feel the same on phone and desktop.

How does Lira pick which words to review?

Through FSRS (Free Spaced Repetition Scheduler), based on your own history with each word, not a shared word-frequency list applied to every user.

Are there daily limits on translation like on Readlang's free plan?

No, translation and context lookups aren't capped at a fixed number per day on Lira.

Yes, current access to Lira is completely free, no credit card required.

Lira

Click-to-translate, without the daily cap

Readlang got the core reflex right: click a word, see the translation, keep reading. It's a good idea, running mostly through a Chrome extension, with flashcards picked from word-frequency lists instead of your own memory, and phrase translations capped at 10 a day on the free plan. Lira keeps the same click-to-translate habit, in a browser tab or on your phone, with FSRS scheduling each word around how well you actually remember it.

Start reading free

Readlang's click-to-translate loop works. The catch sits underneath it. It runs mainly as a browser extension, tied to whatever tab you have open, with limited support for reading away from a desktop browser. Its flashcard system pulls review words from frequency lists rather than tracking how well you personally remember each one. And the free tier caps phrase translations and context explanations at 10 a day, right on the two features you'd reach for most while reading something real. Lira keeps Readlang's best instinct, one click and you're back in the text, and removes the extension, the frequency list, and the daily counter.

What actually gets in the way on Readlang

None of this breaks the core idea. It just adds friction in places you'd rather not think about while reading.

Browser extension firstFrequency-list flashcards10 phrase translations a dayBuilt around desktop tabs

Reading that follows you off the browser

Import a text once and it's yours on your phone or your laptop, with nothing tied to a specific tab or extension.

Cards scheduled by your memory, not a word list

Every word you save is scheduled through FSRS, the same algorithm Anki uses, based on your own recall history rather than a generic frequency ranking applied to every learner.

No daily ceiling on translation

Click as many words and phrases as you need. There's no 10-a-day wall on the features that matter most while you're reading.

What you actually see while reading

No extension, no counter running in the background: here's what opening a text and reviewing it looks like day to day.

Click a word, no daily limit

Lira vocabulary notebook with words linked to their source sentence

Every saved word keeps its original sentence

Lira stats dashboard showing FSRS retention rate

Scheduled by your recall, not a frequency list

La science

Frequency lists versus your own forgetting curve

Picking review words by frequency is a reasonable shortcut: common words matter more on average. But it's a population-level guess, not a measurement of what you personally remember. FSRS (Free Spaced Repetition Scheduler) works the other way around: it tracks each word's individual recall history and brings it back right before you'd forget it. Without a personalized schedule, retention falls off fast no matter how common the word was (the gray curve). With reviews timed to your own memory, it climbs and holds (the green curve).

Readlang's extension worked fine, but I read on my phone more than my laptop. Lira just followed me there.
Camille, 26

I kept hitting the 10-phrase wall on the free plan mid-chapter. Now I just keep reading.
Marco, 31

My flashcards line up with words I actually struggle with, not a generic common-words list.
Elena, 29

Readlang or Lira: what to keep from each?

Readlang's browser-extension approach is genuinely convenient if most of your reading already happens inside a tab you want translated on the spot. Lira takes a different angle: a standalone app for imported texts, readable on your phone's browser without an extension, with FSRS scheduling built around each word instead of a shared frequency list.

	Readlang	Lira
Phrase translations per day, free plan (Readlang caps at 10)	✗	✓
Click-to-translate while reading	✓	✓
Works fully in your phone's browser, no extension	✗	✓
Spaced repetition based on your own recall (FSRS)	✗	✓
Import EPUB / PDF into a personal library	✓	✓
Works directly on any webpage via extension	✓	✗
Free to use	~	✓

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Same click, no daily limit

Import a text you actually want to read, for free, and click to translate as much as you need.