Viko vs Lazidi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Viko
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Trung tâm Nghiên cứu Chăm sóc Sức khỏe Viko là đơn vị tiên phong ứng dụng phương pháp Liệu pháp Quý Kinh Đơn giản - Bấm huyệt Tốc độ Nhanh kết hợp với các thiết bị hiện đại hỗ trợ phục hồi chức năng và vật lý trị liệu nhằm đơn giản hóa quy trình, loại bỏ đau nhức hiệu quả. Bên cạnh sứ mệnh kiến tạo ngôi nhà thứ hai cho bệnh nhân: chia sẻ, an toàn và hạnh phúc, Trung tâm Viko luôn nỗ lực đóng góp tâm huyết và tài năng của mình trong việc truyền lại nghề nghiệp của lòng đam mê và sự phục vụ. - Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ - Privacy policy: https://developer.apple.com/help/app-store-connect/manage-app-information/manage-app-privacy/
Lazidi
This app offers illustrated vocabulary flashcards for Vietnamese speakers learning English and Chinese, along with a Vietnamese vocabulary builder. It provides offline access to extensive word banks, pronunciation guides, and etymology for Chinese characters. Users can track progress and unlock achievements.
- Illustrated vocabulary flashcards
- IPA and Pinyin pronunciation with audio
- Vietnamese etymology for Chinese characters
- Extensive word banks for English, Chinese, and Vietnamese
- Offline access, no account or internet needed
- Progress tracking and achievements
- Home screen and lock screen widgets
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Lazidi is a flashcard app for lazy learners: open, swipe, remember. One word per card, a hand-drawn illustration and a native voice — swipe up whenever you want the full story. FOUR LANGUAGES, THE RIGHT LEVEL • English, CEFR A1 → C2, with US and UK pronunciation and a World deck • Chinese, HSK 1 → 7–9, with radicals, grammar and Sino-Vietnamese readings • Japanese, JLPT N5 → N1, with the kana charts, kanji cards and grammar • Vietnamese, Level 1 → 6 More than 61,000 study cards and a lookup dictionary of over 263,000 entries. Filter by level, topic, part of speech and purpose (exams, travel, food…). ONE CARD, ALL THE WAY DOWN • A short meaning up front, the full definition when you swipe up • Bilingual example sentences — tap the speaker to hear the whole sentence • Memory tips, collocations, near-synonyms and easily confused words • Chinese characters broken into components, with historical scripts from oracle bone to cursive • Japanese furigana, romaji, pitch accent and transitive–intransitive verb pairs • Draw a character in the search box when you can't read it WRITING AND CALLIGRAPHY Press and hold a character to practise its stroke order, graded stroke by stroke. Write with a ballpoint, a fountain pen or a brush; the Calligraphy desk adds paper formats, tracing guides, a red seal and saves your work as an image. LEARN BY PLAYING Up to 14 review games built on the deck you're studying: true/false swipes, multiple choice, fill in the blank, listen and write, matching, flip cards, tones, dictation… Words you're about to forget come back at the right time, and a "Remember this?" card pops into your deck. Daily goals, challenges, 186 achievements and Game Center leaderboards. ILLUSTRATED READINGS More than 350 stories, fables, nursery rhymes, Tang poems, couplets, haiku and classical texts across all four languages, with illustrations, narration and paragraph-by-paragraph translation. Tap any word to see its meaning. New readings arrive without an app update. YOUR OWN WORD LISTS Paste a paragraph, snap a page or pick a photo: Lazidi picks out the words it has cards for and makes a deck. Put Scan Words on your Lock Screen or in Control Center, or ask Siri. LEARN TOGETHER Put two iPhones or iPads side by side to connect — no account needed: Study together, Teach (the student's device follows the teacher's) or Duel to see who's faster. Kids mode with big pictures, big text and a big speaker button. THE CU LI ASSISTANT On devices with Apple Intelligence: ask cu li about a word, get more example sentences, have your sentences corrected or role-play a conversation. WORKS OFFLINE Download a language pack once: cards, pictures and pronunciation live on your device. Example audio and readings download when you're online. Saved words, filters and review progress sync through your own iCloud. Word card and daily quiz widgets on your Home Screen. ON IPAD Cards show every section at once, a sidebar in landscape, keyboard shortcuts and Apple Pencil for writing practice. PRICING Vietnamese is free in full. English, Chinese and Japanese are free for the first two levels (A1–A2; HSK 1–2 plus radicals; JLPT N5–N4 plus the kana charts). Unlock each full language with a one-time purchase, or all three with one All Languages purchase; try everything free for 3 days. No ads, no account.
Screenshots
Verdict
The clearest difference is update cadence: Viko at weekly against Lazidi's every 3 weeks. Viko also leads on iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases 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. Viko sells 3 in-app purchases, starting at $2.99 per month and Lazidi sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Viko ships an update weekly, Lazidi every 3 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | Viko | Lazidi |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Weekly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 45 MB | 26 MB |
| Age rating | 4+ | 12+ |
| Developer | H2Tech | Pham Hung |
In-app purchases
Viko
- Gói cơ bản$2.991 Month
- Gói chuyên sâu$6.991 Month
- Gói bổ trợ$9.991 Month
Lazidi
- English full pack$4.99
- Chinese full pack$4.99
- Japanese full pack$4.99
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- All languages$14.99









