Hack Chinese
Hack Chinese is a bootstrapped, web-based Mandarin vocabulary platform using a customizable spaced repetition system, an 80k-character / 150k-word dictionary, and Outlier Linguistics functional components to serve self-study learners, heritage speakers, and HSK exam candidates globally via subscription.
- Company typePrivate
- Founded2018
- HeadquartersBeijing, China
- Headcount1–10
- GTM typeB2C
- OfferingSoftware
What Hack Chinese does
Hack Chinese, Ltd is a privately held, bootstrapped web-based Mandarin vocabulary learning platform founded in 2018 and operated by a team of 1–10. Its core product is a customizable spaced repetition system (SRS) delivered through a Ruby on Rails web application — modernized to Rails 8.1 and Ruby 3.3 with YJIT in early 2026 — that schedules reviews of Chinese characters and vocabulary words at increasing intervals to drive long-term retention. The platform differentiates on content depth: an integrated dictionary covering over 80,000 characters and 150,000 words, 31,000+ example sentences spanning HSK levels 1–6 and HSK 3.0 levels 1–3, and a strategic partnership with Outlier Linguistics that embeds authentic functional components, ancient forms, meaning trees, and stroke order diagrams into character lookups. A 15-module Foundations Course, Reverse Quizzing (English→Chinese), precision word tracking, a rebuilt dashboard, multi-cram modes, and a Developer API round out the 2.0 product surface.
Hack Chinese firmographics
Firmographics- Name
- Hack Chinese
- Legal name
- Hack Chinese, Ltd
- Website
- https://hackchinese.com
- Company type
- Private
- Founded year
- 2018
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Hack Chinese is a bootstrapped, web-based Mandarin vocabulary platform using a customizable spaced repetition system, an 80k-character / 150k-word dictionary, and Outlier Linguistics functional components to serve self-study learners, heritage speakers, and HSK exam candidates globally via subscription.
- Ownership category
- akta.pro rank
Hack Chinese industry classification
Industry- Product category
- Language Learning Software
- NAICS
- Exam Preparation and Tutoring (611691)
- SIC
- Services-Prepackaged Software (7372), Services-Educational Services (8200)
- akta.pro primary industry
- Vocabulary, Flashcards, SRS & Memorization Platforms (EDAFAOAF)
Keywords
Where Hack Chinese is headquartered
LocationHeadquarters
- HQ city
- Beijing
- HQ country
- China
- HQ region
- Asia
Markets served
Hack Chinese business model
Business model- GTM type
- B2C
- Offering type
- Software
- Cost components
- Technology or R&D, Infrastructure, Personnel, Marketing or Sales, Operations
Revenue model
- Subscription - Annual Plan: Primary subscription model at $12/month ($144/year), offering approximately $3/week. Includes full access to all features, vocabulary lists, integrations, and the Outlier Linguistics character dictionary. Supports promo codes at purchase time.
- Subscription - Monthly Plan: Monthly subscription at $18/month for users who prefer month-to-month billing. Full access to all features without annual commitment.
- Referral Program: Users who refer friends receive 2 free months when the referred user subscribes. Both referrer and referred user receive the reward.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | Annual subscription at $12/month |
| Subscription | Monthly | Monthly subscription at $18/month |
Go-to-market motion2 records
Distribution channels2 records
Marketing channels5 records
Hack Chinese product offering
Product offeringCore offering
Hack Chinese is a web-based subscription platform that helps learners memorize Mandarin Chinese characters and vocabulary using a customizable spaced repetition system (SRS). The product delivers daily flashcard review sessions, integrates authentic functional component data from Outlier Linguistics for character decomposition, provides a 150,000-word dictionary, and offers curated HSK exam vocabulary lists. It is sold directly to individual learners via annual ($12/month) and monthly ($18/month) subscription plans with a 21-day free trial.
Product overview
Hack Chinese is a web-based vocabulary learning platform centered on its core SRS (spaced repetition system) product, featuring customizable scheduling algorithms, functional components from Outlier Linguistics, and an integrated dictionary. The product portfolio includes the main Hack Chinese application (web-based, accessible on mobile browsers), the Foundations Course (a 15-module sub-product teaching functional components), and a Developer API enabling third-party app integration. The platform also offers multiple study modes (Everyday, Custom, Cramming, Multi-Cram), an HSK interactive guide, and vocabulary list synchronization with third-party Chinese learning apps like Du Chinese and The Chairman's Bao.
Differentiator
Problem solved
Functional benefit
Products and services
- Hack Chinese Web-based SaaS platform that helps individual learners memorize Mandarin Chinese characters and vocabulary via a customizable SRS, integrated dictionary (80k+ characters, 150k+ words), functional components from Outlier Linguistics, HSK vocabulary lists, and first-party sync with content apps like Du Chinese and The Chairman's Bao.
- Foundations Course 15-module sub-product crash course that teaches how to read, understand, and apply Chinese character functional components in under two hours. Included as part of the Hack Chinese subscription.
- Developer API Public REST API enabling third-party applications to programmatically add or remove words to a user's Hack Chinese sync list, authenticated via app tokens and per-user auth tokens. Powers first-party integrations with Du Chinese, The Chairman's Bao, and Maayot.
Quantifiable outcome
- Students add 150-450 new words per month with fast, accurate recall
- +3 more outcomes
Companies that use Hack Chinese
Customer profileSegments3 records
Ideal customer profiles4 records
Hack Chinese technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration7 records
AI capability3 records
Feature10 records
Hack Chinese partnerships and signals
Strategic signalPartnerships
Three partnerships are on record, tiered core and key.
- Outlier LinguisticscorePartnership to integrate Outlier Linguistics' functional components data into Hack Chinese. This provides authentic character decomposition, ancient forms, meaning trees, and stroke order diagrams. The functional components are described as the 'champion of deep character learning' and are a key differentiator for the platform.
- Du ChinesekeyFirst-party sync integration allowing vocabulary from Du Chinese to automatically appear in Hack Chinese. Users link their accounts and words learned in Du Chinese sync to their Hack Chinese study queue.
- The Chairman's BaokeyFirst-party sync integration allowing content from The Chairman's Bao (graded Chinese readers) to sync vocabulary to Hack Chinese.
Scale indicators5 records
Recent moves4 records
Expansion highlights5 records
Hack Chinese competitors and assessment
Company assessmentDirect peers
- LingQ: LingQ is a multi-language learning platform with extensive Chinese content, integrated reading, and spaced repetition vocabulary tracking. It targets the same serious self-study learner and competes on the content-plus-SRS integration model.
- HelloChinese: HelloChinese is a gamified Mandarin learning mobile app with built-in vocabulary and character learning modules. It serves the same self-study beginner-to-intermediate Mandarin learner persona with native iOS/Android apps, providing broader but less depth-focused competition.
- LingoDeer: LingoDeer is a structured language-learning app covering Chinese (plus Japanese, Korean) with grammar, vocabulary, and character lessons. It competes with Hack Chinese in the vocabulary retention use case while offering a broader course-based curriculum.
- Pleco: Pleco is the most established Chinese dictionary and flashcard app, combining dictionary lookup with built-in SRS for character/vocabulary learning. It directly competes with Hack Chinese for the same individual learner use case (memorizing Chinese vocabulary), with a stronger mobile-native presence and longer operating history.
- Skritter: Skritter is a Chinese (and Japanese) character and vocabulary learning platform with handwriting practice and SRS. It targets the same Mandarin learner persona and overlaps directly with Hack Chinese's vocabulary retention focus, while differentiating through handwriting input.
- ChineseSkill: ChineseSkill is a Mandarin learning app with gamified vocabulary, character, and grammar lessons targeting beginners. It overlaps with Hack Chinese's primary learner segment and competes on mobile-first, low-friction vocabulary acquisition.
- Anki: Anki is the dominant open-source spaced repetition flashcard platform used heavily by language learners worldwide, including Chinese. It is explicitly referenced in Hack Chinese testimonials as the comparison point ("A step beyond Anki") and represents the free, highly customizable alternative in the same product category.
Emerging players
- Du Chinese: Du Chinese is a graded Chinese reader app with integrated vocabulary tracking. It is a current Hack Chinese integration partner and adjacent competitor in the Chinese learning ecosystem, differentiating through content rather than SRS depth.
- Migaku: Migaku is an SRS-based language learning toolset (originally Japanese, now expanding to Chinese) that integrates with content like anime/TV. It overlaps with Hack Chinese's content-integration philosophy and SRS methodology but is broader across Asian languages.
Others
- Outlier Linguistics: Outlier Linguistics is the partner providing Hack Chinese's functional components and character dictionary data. While primarily a publisher of Chinese character etymology materials, its integration into Hack Chinese creates an adjacent competitive product (books/courses) for the deep-character-learning niche.
Market position
Strengths2 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Hack Chinese social profiles
Digital presenceHack Chinese financial estimates
Financial estimateRevenue estimate
Valuation estimate
Hack Chinese leadership team
Management profileNumber of profiles
Hack Chinese funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Hack Chinese M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Hack Chinese
What does Hack Chinese do?
Hack Chinese is a web-based subscription platform that helps learners memorize Mandarin Chinese characters and vocabulary using a customizable spaced repetition system (SRS). The product delivers daily flashcard review sessions, integrates authentic functional component data from Outlier Linguistics for character decomposition, provides a 150,000-word dictionary, and offers curated HSK exam vocabulary lists. It is sold directly to individual learners via annual ($12/month) and monthly ($18/month) subscription plans with a 21-day free trial.
Is Hack Chinese a public or private company?
Hack Chinese is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Hack Chinese founded?
Hack Chinese was founded in 2018. It employs 1 to 10 people.
Where is Hack Chinese based?
Hack Chinese is headquartered in Beijing, China, in the Asia region.
How does Hack Chinese make money?
Three revenue lines are on record. Subscription - Annual Plan is the primary driver. The others are subscription - Monthly Plan and referral Program.
Who are Hack Chinese's main competitors?
Direct peers on record are LingQ, HelloChinese, LingoDeer, Pleco, Skritter, ChineseSkill and Anki. Emerging players are Du Chinese and Migaku. Outlier Linguistics is listed as an others.
Does Hack Chinese have an API?
Yes. Developer API for third-party applications to programmatically interact with Hack Chinese. Allows linked apps to add or remove words to a user's sync list. Authentication via unique app tokens ($app-token) in authorization header and per-user auth tokens ($user-auth-token) in JSON payloads. Endpoints: POST to /establish_link_for_user, /add_words_to_user_list, and /remove_words_from_user_list. Supports adding words with simplified Chinese characters and pinyin. Duplicate words are deduplicated per user. Unknown words are added to an approval queue. Developer documentation is at www.hackchinese.com/api.
What industry is Hack Chinese in?
Hack Chinese's product category is Language Learning Software. Its primary akta.pro industry code is EDAFAOAF, Vocabulary, Flashcards, SRS & Memorization Platforms. Its NAICS code is 611691 and its SIC code is 7372.