AJC vs InkTrail HSK
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AJC
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AJC-e là một ứng dụng học tập trực tuyến cung cấp các khóa học đại học trực tuyến. * Truy cập mọi lúc mọi nơi: Để làm cho việc học trở nên thú vị hơn, các bài học được thiết kế cho các hoạt động hàng ngày. * Trên các thiết bị điện tử: Học sinh tiếp tục lộ trình học của mình bất cứ lúc nào, trên điện thoại ở nơi công cộng, trên máy tính. * Theo năng lực của bạn: Kiểm soát tốc độ học tập của bạn trên lộ trình học tập để phù hợp với lịch trình và mục tiêu nghề nghiệp của bạn. * Chỉ 15 phút mỗi bài: Tận dụng sự chú ý của học sinh, các bài học được thiết kế ngắn gọn để không tạo cảm giác nhàm chán hoặc nặng nề. Hướng dẫn sử dụng phần mềm: 1. Mở ứng dụng đã tải xuống trên thiết bị di động của bạn 2. Lựa chọn khóa học muốn học 3. Truy cập và bắt đầu học
InkTrail HSK
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Reading a character and writing it are two different skills. InkTrail HSK is a handwriting workbook for HSK 3.0, covering all nine levels: 10,969 words and 2,970 characters, with stroke-order data for every character. The word list and stroke data ship inside the app, so practice works offline. HOW EVERY WORD IS PRACTICED Watch — Every character has an animated stroke-order demo. Step through it one stroke at a time, or replay it whenever you like. Write from memory — The prompt gives you the pinyin and the meaning, not the character. You write it on a blank grid, and every stroke is checked as you go. Stuck? Peek at the outline, or turn on Guide and trace along. Review — Your writing score decides when the word comes back. Characters you write cleanly return later; the ones you needed help with return soon. PRINT WORKSHEETS FOR PEN AND PAPER Export the words you're practicing as an A4 PDF. Each entry carries its pinyin, its meaning, and a few common words. Each character steps through its stroke order, then leaves a few cells to trace and the rest to fill in yourself. Print it, or send it anywhere with the share sheet. TROUBLE WORDS, WIDGETS, AND REMINDERS • Words you keep missing collect in Trouble Words, sorted by how often you have missed them, so your weak spots are easy to see. • Three widgets: Word of the Day, Today's Practice, and Trouble Words. The first two also work on the Lock Screen. • Turn on a daily reminder and pick a time. Your practice streak is counted too. Built for iPhone and iPad, with full Dynamic Type support and a light and dark theme. FREE AND INKTRAIL PRO Practice, reviews, and the full word list are free, with 5 new words and 1 worksheet export a day. InkTrail Pro lifts both daily limits and adds targeted practice for your trouble words. It is available as a monthly or yearly subscription, or as a one-time lifetime purchase. Payment is charged to your Apple Account at confirmation of purchase. A subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel it in your Apple Account settings. Privacy Policy: https://smilediary.app/app/inktrail/privacy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ DATA SOURCES Stroke-order data from makemeahanzi (Arphic Public License). English definitions from CC-CEDICT (CC BY-SA 4.0).
Screenshots
Verdict
The clearest difference is in-app purchases: AJC at none against InkTrail HSK's 3. AJC also leads on iOS requirement (13.0 vs 18.6). InkTrail HSK's advantage is update cadence (every 2 days vs every 3 months). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. InkTrail HSK sells 3 in-app purchases, starting at $2.99 per month. AJC asks for nothing beyond the download.
AJC ships an update every 3 months, InkTrail HSK every 2 days. The most recent releases landed on November 9, 2026 and November 13, 2026 respectively.
| Parameter | AJC | InkTrail HSK |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 56 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Minh Nguyen Ba | Nanjing Xiaowei Technology Co., Ltd. |
In-app purchases
AJC
No in-app purchases
InkTrail HSK
- Monthly$2.991 Month
- Yearly$14.991 Year
- Lifetime$29.99









