Open source · Self-hostable

All 11,000 words of HSK 1–9. Pre-loaded and ready to swipe.

  • 3,000+ example sentences & native audio
  • Powered by modern FSRS science
  • Gesture-first swipe UX
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No signup to try · or self-host it free, forever

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Building flashcard decks is the part where everyone quits

Hours of setup before the first review, words with no context, and apps that stop halfway through the HSK levels. HSK Nest starts you with everything already in place, so all that's left is the studying.

Everything you need to master vocabulary.

Zero configuration required.

Every HSK Word, Curated

From absolute beginner to mastery. The complete HSK 1–9 vocabulary list, meticulously tagged, categorized, and error-checked.

HSK 1: 300 wordsHSK 9: 11,000 words total

Native Audio

Crystal clear pronunciation for every character and word.

FSRS Scheduling

State-of-the-art spaced repetition algorithm minimizes review time while maximizing retention.

3,000+

Context Sentences

Don't learn words in a vacuum. Understand nuance with high-quality, practical example sentences.

我每天都在学习中文。

wǒ měi tiān dōu zài xué xí zhōng wén.

I study Chinese every day.

Study without the clutter

Studying a flashcard with pinyin, meaning, and example sentence
Study
Words overview with per-word strength
Words
Word lists including all HSK levels
Lists

How it works

1

Jump in as a guest

No signup, no card, you're studying in ten seconds.

2

Pick a deck

Tell us your HSK level and the right deck is waiting, or import your own lists.

3

Review daily

HSK Nest tells you exactly what to study and when. Optimized by FSRS to minimize your daily review load, keeping your streak alive over years of fluency, not just weeks of cramming.

Self-host it forever, free

HSK Nest is AGPL open source. Run it on your own server with zero limits and zero subscription, or let us handle hosting, updates, and backups for you.

View on GitHub

Simple pricing, no lock-in

Same exact software. We just handle the servers, backups, and audio pipeline so you don't have to.

Monthly

€10/month

  • 14 days free (no credit card to start)
  • All features & pre-loaded HSK decks
  • Cancel anytime, in one click
Best Value

Yearly

€99/year

  • Two months free
  • 14 days free (no credit card to start)
  • All features & pre-loaded HSK decks
  • 14-day no-questions-asked refund

Prefer to run it yourself? Self-host free on GitHub · Compare options

Questions, answered

Is HSK Nest really free?

Self-hosted, yes, forever, under the AGPL license. The hosted version is €10/month after a 14-day free trial: we handle updates, backups, and hosting.

Do I need a credit card to try it?

No. Start in guest mode instantly, and the 14-day trial never asks for a card, so there's no surprise charge, ever.

Can I import my existing Anki decks?

Yes, export them from Anki as CSV/TSV and paste or upload; you map the columns and HSK Nest does the rest.

What languages does HSK Nest support?

HSK Nest is built for Mandarin: full HSK 1–9 (11,000 words, November 2025 official syllabus) plus 3,000 example sentences with pinyin. The engine underneath is language-agnostic, so you can import your own CSV decks for anything else you're memorizing.

What happens to my progress if I stop paying?

Nothing is deleted. You can export your full progress as CSV at any time, and self-hosting is always free, your data isn't locked in.

Is my data private?

Yes. No ad tracking, no analytics cookies, open-source code you can audit, and if you want full control, run it on your own server.

Stop forgetting the words you already learned

Start free, no card, no signup required to try.

Self-host on GitHub