# HiAn — Learn Vietnamese

> HiAn is an iPhone app that teaches spoken Vietnamese to people who need it
> for someone in their life: a partner, in-laws, colleagues, a grandmother.
> Its distinguishing feature is that it teaches the Vietnamese kinship pronoun
> system against the learner's own real family, rather than as a grammar
> chapter. Everything ships inside the app and works offline.

## What it is

- **Platform**: iPhone, iOS 17 or later. No Android version.
- **Interface languages**: English and Korean.
- **Language taught**: Vietnamese, Northern and Southern dialects.
- **Price**: free tier with no account required; optional Premium subscription
  (monthly or annual) priced by the App Store in local currency.
- **Website**: https://hian.study

## What is in it (content build 1.0.0)

- 1,712 phrases, every one recorded by a native speaker
- 6,292 recordings across 2 regional voices (Northern female, Southern female)
- 11 worlds, 89 scenarios, 299 lessons
- 95 multi-turn conversations
- 79 relationship drills, each a live query over the phrase library
- 72 culture notes
- 1,025 individual words with their own practice module
- 60 slang and texting entries, each with guidance on when not to use it

Free tier: 8 lessons, 20 scenarios spread across all 11 worlds, all 1,025
words, and the full spaced-repetition schedule. Premium opens the remaining
1,484 phrases and everything else.

## How it teaches

- **Kinship pronouns first.** Vietnamese has no neutral "you"; the learner
  enters their real family and the app resolves and drills the specific
  pronoun pairs they need.
- **Spaced repetition** on every phrase, scheduled per item.
- **Whole conversations**, not isolated sentences — the correct reply depends
  on the previous turn.
- **Naturalness grading**: where the textbook form and the natural form differ,
  both are shown and labelled.
- **Tone practice by pitch curve**: the learner's recording is compared to the
  native one and the difference is described in words. There is deliberately no
  pronunciation score, because a percentage would be invented rather than
  measured.
- **Exercise fairness**: wrong answers are matched to the correct one for
  length and meaning, so a question cannot be solved by option shape alone. A
  question that cannot be built fairly is dropped rather than asked.

## Privacy

Learner data stays on the device by default. An account is optional and exists
only for backup and cross-device sync. There is no advertising identifier, no
third-party analytics or advertising SDK, and pronunciation recordings are
never uploaded — the pitch comparison runs entirely on the phone. Accounts can
be deleted from inside the app.

## Key pages

- [Home](https://hian.study/): what the app is and who it is for
- [What's inside](https://hian.study/features): the full curriculum breakdown
- [Pricing](https://hian.study/pricing): free tier and subscription terms
- [Guides](https://hian.study/blog): long-form articles on learning Vietnamese
- [Privacy policy](https://hian.study/privacy)
- [Terms of use](https://hian.study/terms)
- [Support](https://hian.study/support)

## Guides

- [Vietnamese pronouns: the complete guide](https://hian.study/blog/vietnamese-pronouns) —
  how the kinship pronoun system works, with the age rules and the
  self-reference rule.
- [The six Vietnamese tones](https://hian.study/blog/vietnamese-tones) — what
  each tone does to the voice, which pairs learners confuse, and why Southern
  Vietnamese uses five.
- [Northern or Southern Vietnamese](https://hian.study/blog/northern-vs-southern-vietnamese) —
  the practical differences and how to choose.
- [Meeting your Vietnamese partner's parents](https://hian.study/blog/meeting-vietnamese-parents) —
  what to say, what to bring, and what happens at the table.
- [How long does it take to learn Vietnamese](https://hian.study/blog/how-long-to-learn-vietnamese) —
  an honest timeline.
- [Vietnamese for heritage speakers](https://hian.study/blog/heritage-speakers-vietnamese) —
  for people who understand but cannot speak.

Korean translations of the first two are at https://hian.study/ko/blog.

## Contact

- General and support: support@hian.study
- Privacy: privacy@hian.study