In the Leitner Box application, you can create new flashcards and quizzes in Markdown and LaTeX format and share them with others. In this app, you can create your flashcards in Markdown and LaTeX format.
All the flashcards will store on your local device and you can import and export all or specific categories and share them with your friends. All the flashcards will be automatically scheduled to review them consistently.
If you add a flashcard by selecting a word in the browser, this extension will automatically save the word and its paragraph to let you review that word in the main context(this way is much better than reviewing something just by its meaning).
You can add an image in Markdown format, for this, you need to copy the image link and past it to your flashcard in markdown format like this:

You can see some of the available commands this app supports in the screenshot section.
This is the sample code(copy inside application to see how its work):
# Here's a Heading
###### Heading level 6
I just love **bold text**.
This is really ***very*** important text.

```python
def sayHi():
print("Hi")
```
$$ \frac{x}{y} $$
My favorite search engine is [Duck Duck Go](https://duckduckgo.com "The best search engine for privacy").
| Tables | Are | Cool |
|----------|:-------------:|------:|
| col 1 is | left-aligned | $1600 |
| col 2 is | centered | $12 |
| col 3 is | right-aligned | $1 |
- First item
- Second item
- Third item
- Indented item
- Indented item
- Fourth item
$$ Take , \frac{x}{y} cup of sugar $$
$$\sqrt{\frac{a}{b}}$$
$$ \sum_{i=1}^{10} t_i $$
$$ x \equiv a $$
$$ \frac{n!}{k!(n-k)!} $$
$$ ^3/_7 $$
$$ k_{n+1} = n^2 + k_n^2 - k_{n-1} $$
Extore is a team of professionals who are passionate about creating extensions for web browsers. This devotion also gives us opportunity to appreciate work of other people. We get inspired by useful, open source extensions made by developers all over the world. Our strong belief is that one should share helpful add-ons with others. That’s why we’d like to present you our ever-growing list of favourite extensions that have inspired us. Moreover, as you probably have already learned, sometimes struggling for the best brings an end to the good. Talking about add-ons it often turns out that an upgrade is worse then previous version. Also it can become really tricky to get back to the beloved version of your favourite extension. That’s why we’re going to make not only the latest, but all versions of our favourite (and we hope yours too) add-ons available for download. No more compromises, just stick to the version you really like!