McLearn apps help you master Mandarin Chinese (HSK), Cantonese, and English (CEFR) — free on the App Store, Google Play and the web, alongside QuickOne Scanner, games and offline-first life-logging tools. iDataGear also delivers ETL pipelines, BI dashboards, and custom software for data-driven teams.
Apps on iOS, Android & Web
Now on the Apple App Store
Every app, free to download
McLearn is iDataGear's family of language learning products. Master Mandarin Chinese (HSK 1–6), Cantonese with authentic Hong Kong culture, and English (CEFR A1–C2) — plus handwriting practice, interview prep, a 71,000-entry Cantonese dictionary, an on-device document scanner, and strategy games. Every app is free to download on the Apple App Store, Google Play and the web.
Master Mandarin Chinese across HSK 1–6 and Grade 1–6 — around 7,000 words with audio, graded reading, practice tests, mini-games and spaced-repetition review.
識聼識講廣東話. Cantonese as it is actually spoken in Hong Kong and Guangzhou — 12,000+ words with Jyutping on every entry, tappable audio, and a library of real slang, stories and everyday dialogue.
All Level Learner's English — CEFR A1–C2 vocabulary with IPA, sentences, articles, practice tests, and pronunciation practice.
Learn to write hanzi, not just recognise them. Trace each character on screen with real-time stroke feedback — correct strokes are accepted, wrong ones gently rejected.
A complete offline Cantonese reference — 71,000+ words, phrases and expressions, each with Jyutping and spoken pronunciation. Search by character, by Jyutping, or by English meaning.
AI-powered mock interview platform with instant feedback, structured preparation, and real-time performance analysis. Land your next role with confidence.
Your documents never leave your phone. Edge detection, image cleanup, text recognition and search all run on your device — no account, no server, no ads, no scan limit, no watermark.
The classic game reimagined on a 4×4 board. Tactical depth, beautiful design, and a smart AI opponent to challenge your strategy.
Traditional Chinese strategy board game brought to life with modern design. Experience classic Chinese gameplay on any device.
How good is your eye? Estimate lengths, pour liquids to a target volume, and mix colours by eye — then watch the accuracy reveal tell you how close you got.
A local-first, private moments journal. Capture life by voice, text, and photo — everything stays on your device, fully offline.
From where you go, to memory forever. Record a hike with photos, videos, notes and voice memos pinned to the map — or build a journey from your Google Maps Timeline or geotagged photos — then watch it play back and keep it as a video.
iDataGear means Intelligence Data Gear — we transform raw data into actionable business intelligence. Our proven track record spans ETL pipelines, analytics dashboards, and the full suite of McLearn cross-platform apps.
Rapid discovery workshops to shape product direction, service design, and measurable KPIs.
Connect systems, normalize data, and automate repeatable workflows with confidence.
End-to-end design & development for web, mobile, and immersive learning experiences. Track record includes Learn Chinese and Learn Cantonese.
Fractional product, engineering, and ops leadership tailored to your company's cadence.
Four apps are now live on the Apple App Store for iPhone and iPad — Great Cantonese Dictionary, McCantonese, QuickOne Scanner and Chinese Xie Zi. Every app is also free on Google Play, and most run in any browser. All are built to keep working offline.
Mandarin Chinese with HSK 1–6 vocabulary, sentences, reading comprehension, and pronunciation practice.
12,000+ Cantonese words with Jyutping and audio, Hong Kong and Gen Z slang, daily dialogues, mini stories, and speaking practice with speech recognition.
All Level Learner's English — CEFR A1–C2 vocabulary with IPA, sentences, articles, tests, and pronunciation practice.
Learn to write hanzi, not just recognise them — trace each character with real-time stroke feedback and replay the animated stroke order.
71,000+ Cantonese words, phrases and expressions — each with Jyutping and spoken pronunciation. The whole dictionary is built in, so it works entirely offline.
A document scanner that runs entirely on your device. Scan, read the text, search inside your pages, and export a searchable PDF — nothing is uploaded anywhere.
Strategic 4×4 board game with smart AI. Beautiful design meets deep tactical gameplay.
Traditional Chinese strategy board game with modern design and engaging strategy gameplay.
Casual visual-estimation puzzles: eyeball lengths, liquid volumes, and colour mixes — then see how close you got.
Local-first private moments journal — capture by voice, text, and photo. Your memories never leave your device.
Offline-first GPS hike tracker with route recording, replay export, and geo-tagged photo, video, and voice waypoints.
AI-powered mock interview preparation with instant feedback and structured practice for job interviews.
iDataGear Inc operates across two areas: McLearn language learning products and Business Intelligence solutions. Intelligence Data Gear means we turn data into intelligence — whether helping people master new languages or helping businesses make smarter decisions.
iDataGear brings over 10 years of experience building data-driven software and mobile experiences. Our language learning apps are developed by native speakers and educators, ensuring cultural authenticity and pedagogical depth. Our BI solutions are backed by proven ETL methodologies, analytics implementation, and enterprise software engineering.
How we work: User research → iterative development → data-driven improvement. Every product undergoes rigorous testing and continuous refinement based on real feedback.
iDataGear is a software team working between Toronto, Canada and Hong Kong, combining three disciplines under one roof: language education, data engineering, and product development. Every McLearn course is written and reviewed by native speakers of Mandarin, Cantonese, and English, and aligned to recognised public standards — HSK for Mandarin, the CEFR (A1–C2) for English, and the Linguistic Society of Hong Kong's Jyutping romanization for Cantonese — so learners always know where they stand against an external benchmark.
The engineering side of the team brings over a decade of experience shipping production data platforms — ETL pipelines, analytics dashboards, and enterprise software — and applies the same discipline to our consumer apps: offline-first architecture, on-device machine learning for privacy (as in Momera.ME's local speech-to-text), and cross-platform delivery on web and Android. We use our own products daily — the same apps we publish are the ones our team learns and journals with.
Our McLearn trademark covers ALL English, Learn Chinese, Learn Cantonese, Xie Zi, and the Great Cantonese Dictionary. Built with cultural authenticity, structured learning paths, and cross-platform accessibility. Developed by language experts and native speakers.
iDataGear specialises in ETL data processing, analytics implementation, and BI dashboards. We help enterprises transform raw data into actionable intelligence — faster pipelines, clearer insights, better decisions.
From strategy sprints to full product builds, we deliver end-to-end software development — web applications, cross-platform mobile apps, and enterprise solutions.
Whether building language apps or BI dashboards, the same principles apply: clarity, quality, and continuous improvement. Our own products are the proof.
Quick answers about McLearn® apps, downloads, and iDataGear services.
Learn Chinese by McLearn® covers HSK 1–6 with vocabulary, reading comprehension, and pronunciation practice. Open the web app for free or download on Google Play. No account required. Free on web and Android.
McCantonese — Learn Cantonese carries 12,000+ words with Jyutping on every entry, 3,100+ phrases, 1,400+ everyday sentences, 200+ dialogues and 270+ mini stories, plus Hong Kong slang, Gen Z slang and Guangzhou expressions. A full Jyutping guide covers the 19 initials, the finals and the six tones, and speaking practice uses speech recognition so you can check yourself. Get it on the App Store, Google Play, or use the web app. For lookups, pair it with the Great Cantonese Dictionary.
Install it from the App Store or Google Play, or open idatagear.com/gcd/ in any browser. Search 71,000+ entries three ways — by Chinese characters (你好), by Jyutping (nei5 hou2), or by English meaning. Every entry gives the characters, the Jyutping and clear definitions; tap the speaker to hear it. The whole dictionary is built in, so it works entirely offline. The dictionary itself is free forever; an optional Premium subscription (US$2.99/month, first month free, or US$12.99 for 6 months) unlocks seven curated collections and removes ads.
ALL English (All Level Learner's English) by McLearn® is CEFR-aligned (A1–C2) with vocabulary with IPA, sentences, articles, practice tests, and pronunciation practice. Use the web app or download on Google Play. Free on both platforms.
Use Chinese Xie Zi (中文寫字板) — on the App Store, Google Play, or the web app. You trace each character on screen and get real-time stroke feedback, and you can replay the animated stroke order as often as you need. It covers 9,500+ characters and radicals with pinyin and English meanings, character decomposition, and Simplified/Traditional counterparts, grouped by HSK 1–6, HSK 7–9 and radicals. Free to download, ad-supported, with an optional one-time US$1.99 Remove Ads purchase.
On the Apple App Store (iPhone and iPad), four apps are live: Great Cantonese Dictionary, McCantonese — Learn Cantonese, QuickOne Scanner: PDF & OCR and Chinese Xie Zi 中文寫字板 — see them all on our App Store developer page.
On Google Play, everything is free: Learn Chinese, Learn Cantonese, ALL English, Great Cantonese Dictionary, Xie Zi, QuickOne Scanner, Eyeball It!, Momera.ME and Momera GO. Most apps also run on the web — no download required.
Yes. iDataGear Inc provides ETL data processing, Business Intelligence implementations, analytics dashboards, workflow automation, and end-to-end product development for web and mobile. Contact us to discuss your project.
iDataGear Inc (short for Intelligence Data Gear) is a software company operating in two areas: the McLearn® product family — free language learning apps for Mandarin Chinese, Cantonese, and English — and Business Intelligence consulting — ETL pipelines, analytics dashboards, and custom software. Based between Hong Kong and Toronto. All apps are free at idatagear.com.
McLearn® is iDataGear's registered trademark brand for its language learning and productivity apps. The McLearn family includes: Learn Chinese (Mandarin HSK 1–6), Learn Cantonese (Jyutping + HK culture), ALL English (CEFR A1–C2), Xie Zi (Chinese stroke order), Great Cantonese Dictionary, and Open Interview (AI mock interviews). All are free on web and Android.
Yes. Four native apps are live on the App Store, all free to download:
They need iOS 15 or later (iOS 15.5 for QuickOne Scanner). Browse them all on our App Store developer page. Learn Chinese, ALL English and Open Interview have no native iOS app yet, but their web versions run fully in Safari on iPhone and iPad — open idatagear.com, no installation and no account required.
iDataGear's AI-powered features include:
For AI consulting and automation services, contact us.
Three:
All are free to download on the App Store and Google Play, and free in full on the web at idatagear.com.
McLearn® differs in four ways:
Open Interview by McLearn® is a free AI-powered mock interview preparation platform. It generates realistic interview questions across multiple industries — technology, business, finance and more — then evaluates your answers with instant AI feedback on content, clarity and delivery. It includes structured preparation paths covering behavioral, technical and situational questions, plus performance analysis to track improvement. Completely free, no account required, runs in any web browser.
iDataGear Inc provides Business Intelligence and data services: ETL pipeline design and implementation, BI dashboard development and analytics reporting, workflow automation and AI copilot integration, system integration engineering, strategy sprints (product discovery and KPI definition), cross-platform web and mobile app development, and embedded engineering and product leadership. iDataGear has 10+ years of experience in data-driven software. Contact us to discuss your project.
iDataGear Inc is an international software company crafted between Hong Kong and Toronto, Canada. We serve users worldwide through our web apps at idatagear.com, the Apple App Store and Google Play. Contact: idatagear@gmail.com.
Jyutping is the standard Cantonese romanization system developed by the Linguistic Society of Hong Kong. It uses Latin letters and tone numbers 1–6 to represent Cantonese pronunciation (e.g., 你好 = nei5 hou2). McLearn's Learn Cantonese and Great Cantonese Dictionary include full Jyutping for every word, with audio. Both are free.
Every app is free to download, and none of them needs an account or a sign-up. The web versions at idatagear.com are free in full. On mobile there are three tiers:
iDataGear's BI consulting and custom software services are paid professional engagements — contact us for a quote.
Eyeball It! is a free casual visual-estimation puzzle game with three modes: Length & Shapes (drag a line to match a shape's perimeter by eye), Liquid Volume (hold to pour and release at the target volume), and Color Volume (mix cyan, magenta, and yellow to match a colour). Every round ends with an animated accuracy reveal. Play free on the web or get it on Google Play.
Momera.ME is a free local-first moments journal for Android. Capture life by voice, text, and photo — speech-to-text runs entirely on your device, so nothing is uploaded: no cloud, no account, fully offline. Photos can be scanned with on-device text recognition. Get it on Google Play — see the privacy policy.
QuickOne Scanner: PDF & OCR is a free document scanner for iPhone, iPad and Android. Hold the camera over a page and it finds the edges for you; capture several pages in one session, reorder them by dragging, crop, and apply Original, Grayscale or Black & white filters — always reversible, because the untouched original is never overwritten.
On-device text recognition reads Latin scripts and Chinese (Simplified and Traditional), so you can search full text across every word in your pages, copy the text out, or export a PDF with an invisible searchable text layer. You can also sign a page with your finger, add sticky notes, and export as PDF, JPEG, .txt or a ZIP of your whole library.
Download on the App Store or Google Play, or read how it works.
Yes, genuinely free — no subscription, no one-time unlock, no scan allowance, no ads and no watermark on any export. And nothing is uploaded: edge detection, image cleanup, text recognition and search all run locally. Your scans, page images and recognized text stay in the app's private storage. We operate no server for this app and receive nothing. There is no account, no email and no sign-in.
The camera is used only to scan a page, and photo import goes through the system picker, which needs no photo-library access. On iPhone and iPad the capture screen is Apple's own VisionKit document camera, and both text-recognition models ship inside the app — so OCR works offline from the very first scan.
The trade-off worth knowing: because nothing is uploaded, your scans exist only on that device. Use Settings → Export library as ZIP to keep your own copy. Full privacy policy.
The Great Cantonese Dictionary by McLearn® is a fully offline Cantonese reference for iPhone and iPad, free on the App Store. It holds over 71,000 words, phrases and expressions, each with Jyutping romanization and spoken pronunciation, and the entire dictionary is built into the app — nothing to download and no connection needed, so it works on the MTR, on a plane, or anywhere your data does not reach.
Search three ways: by Chinese characters, by Jyutping when you know the sound but not the character, or by English meaning. It also covers what a dictionary usually leaves out — popular everyday words, Hong Kong Gen Z slang, Guangzhou slang, AABB and ABB reduplication, tongue twisters, children's songs and the Three Character Classic. Interface in English, Simplified Chinese and Traditional Chinese. Requires iOS 15 or later.
Both are priced the same: US$2.99 per month with the first month free, or US$12.99 every 6 months. Prices are shown in your own currency inside the app before you buy. Payment is charged to your Apple Account at confirmation of purchase, and a subscription renews automatically unless auto-renew is switched off at least 24 hours before the end of the current period — manage or cancel any time under Settings › your name › Subscriptions.
In McCantonese, everything is unlocked and ad-free for your first 14 days. After that the app stays free: every section is still open and the opening lessons of each — 200 Hong Kong slang entries, 60 characters, 50 phrases, 60 daily sentences and more — remain free permanently. Premium opens the complete library and removes ads.
In the Great Cantonese Dictionary, all 71,000+ entries, search, Jyutping, pronunciation and the grammar guide are free forever. Premium unlocks the seven curated collections (Popular Words, HK Gen Z Slang, Guangzhou Slang, Reduplication, Tongue Twisters, Children's Songs and the Three Character Classic) and removes ads.
Yes to both. The whole library is stored on your device, so browsing and audio keep working on a plane or a train, and there is no account and no sign-up. For speaking, the app has a speaking-practice screen with speech recognition so you can check yourself, plus tappable audio on every word, sentence and story, an adjustable speech rate, and a choice of installed Cantonese voices.
On iPhone and iPad, audio uses the Cantonese voice built into iOS. If you have not used it before, add it under Settings › Accessibility › Spoken Content › Voices › Chinese. Download free on the App Store.
Momera GO is a free offline-first GPS hike tracker. It records routes with background GPS, works on trails with no signal thanks to offline OpenStreetMap maps, lets you drop geo-tagged photo, video, and voice waypoints, keeps a hike calendar with history, and exports animated track replays as video. Try the web version or get it on Google Play.
We'd love to hear from you — for support, partnerships, or to just say hello.
Reach us for support, feedback, business inquiries, or partnerships.
idatagear@gmail.comAll apps run free in your browser — no sign-up needed.
Get McLearn® apps from Google Play — free and offline-ready.