问易 Yi vs iDao
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
问易 Yi
This app serves as a companion for studying the I Ching and a private journal for decision-making. It helps users clarify questions, reflect on situations, and review past decisions without predicting outcomes. It offers access to classic texts, commentary, and optional personal assessments.
- Study 64 hexagrams with source text and commentary
- Private decision-reflection journaling
- On-device AI assistance
- Optional self-report personality assessments
- End-to-end encrypted sync
- Data export and deletion options
- Multilingual study support
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Know yourself. Think a decision through. Yi brings together self-discovery, classical-text study and a private decision-reflection journal. Start with a self-report questionnaire, a real question, a passage or a story. Or simply write down a decision and revisit it later. No knowledge of the I Ching is needed to record your thoughts, explore what matters to you and notice how your thinking changes. Your choices about work, relationships, family and learning remain your own. Yi does not predict outcomes or decide for you. READ THE CLASSIC • Browse and study all 64 hexagrams in Classics. • Each hexagram includes verbatim source text from the authoritative Zhonghua Book Company edition of the Zhouyi, a readable guide, and commentary from multiple classical schools with citations. REFLECT, DON'T PREDICT • Clarify a real question, read a reflective interpretation, and save your thoughts. • Review past entries to notice your own patterns. Yi supports reflection; it does not make decisions for you. PRIVATE BY DESIGN • AI assistance runs on your device by default. If on-device AI is unavailable, source texts and reflection steps remain available; your question is never sent to a cloud model automatically. Open the Iris tab, “Who am I?”, in the bottom bar. Yi personality brings together six I Ching dimensions, Big Five, values and your current state as separate self-reports, without a combined personality score. Basic assessments and sharing are free; portrait history and reflection across models remain included in Yi Plus. Results support reflection, not diagnosis. The separate Birth chart is a cultural reflection tool that can calculate and save positions on supported devices using your birth date, place and time. An unknown time produces a full-day range without a definite ascendant or houses. Devices that cannot calculate can still manage birth details. Birth details are excluded from sharing and AI context by default. • Optional sync between your devices is end-to-end encrypted. The service cannot read synced content. • Export or permanently delete your data at any time. FOR LEARNERS • Study in Simplified Chinese, Traditional Chinese, English, or Japanese. • Follow structured courses, source editions, long-form stories, and your own reading progress. AI AVAILABILITY On-device assistance is available on supported devices; source reading and reflection work independently. Overseas cloud assistance and AI-point purchases are not available in this version. Yi is for reflection and study only. Its content is not medical, legal, financial, or investment advice. SUBSCRIPTION (OPTIONAL) Yi is free to use, including the 64 hexagrams, source text, multi-school commentary, local journaling, basic sharing, and public study cards. Yi Plus adds structured courses, progress and study badges, full encrypted sync and restore, richer review schedules, on-device multilingual study support, and advanced share cards. Yi Master includes all Plus benefits plus the monthly Three-Mirror PDF, basic and collector annual reports, Master notes, the supporter badge, priority help and support, 30 Yi Credits each month, and collector visual packs. Subscriptions renew automatically and can be managed or cancelled in your Apple Account settings. Privacy Policy: https://cardmira.com/privacy Terms of Use: https://cardmira.com/terms
iDao
This offline companion facilitates a deep study of the Tao Te Ching with bilingual text, dual commentaries, and interactive practice tools. Engage in recitation, review games, and daily readings with customizable features and system integrations. Study data is kept private on your device by default.
- Bilingual reading and dual commentaries
- Recitation workbench with highlighting
- Study Hall and Seek the Tao practice games
- Daily Chapter with widgets and notifications
- Offline functionality
- Customizable backgrounds and font sizes
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iDao (Love the Tao Te Ching) is an offline study companion for the Tao Te Ching - not a plain text reader. Close reading, dual commentaries, bilingual compare, recitation, practice, and daily habits live in one place. No network and no account are required to start. WHY DOWNLOAD Many Tao Te Ching apps stop at original text plus translation. iDao is built on four pillars: 1) Bilingual reading and dual classical commentaries, with vernacular Chinese and per-character pinyin (horizontal and vertical) 2) A recitation workbench with line highlighting, continuous play, and background speech 3) Study Hall and Seek the Tao for practice and light review games 4) Daily Chapter with widgets, notifications, Siri, Control Center, and deep links Fully offline. No ads. No third-party analytics. Study data stays on device by default. Optional iCloud merge runs only after you enable it. LIBRARY 81 Tao Te Ching chapters (Wang Bi text; Book of the Way and Book of Virtue), plus Qingjing Jing and Yinfu Jing - 85 chapters total - and 74 bilingual famous lines. Pinyin prefers corpus alignment, with whole-line fallback. Interfaces: Simplified Chinese, Traditional Chinese, English. BILINGUAL READING AND COMMENTARIES Public-domain translations by James Legge and Paul Carus can be read alone or compared. Classical notes switch between Wang Bi and Heshang Gong. Reading language: bilingual, Chinese only, or English only. Long chapters support segmentation and page hints. Backgrounds: system, paper, sepia, night. CHAPTER DETAIL Toolbar: Favorite, Speak, More. More covers Study Hall, recitation, notes, mastery, immersion, font size, display toggles, Dao Lists, adjacent chapters, copy, share, link, and Dao cards. Notes open from three places. Build custom Dao Lists and move chapter to chapter in one flow. VERTICAL AND SHARE CARDS Vertical text and immersive follow-along highlight lines during speech. Multi-style Dao cards support square, portrait, and story ratios, with fullscreen preview, save to Photos, or share. RECITATION Line highlighting, voice and rate, continuous playback with gaps, background audio, and Lock Screen Now Playing. Speak original, vernacular, or English independently of on-screen layout. STUDY HALL AND SEEK THE TAO Modes: fade memorization, fill-in, self-check, and quiz. Seek the Tao reviews lines by keyword hunting and stores best score. Multi-select Favorites or Dao Lists for batch recitation or batch Study Hall. Streaks, mastered list, history, and notes keep your trail visible. BROWSE, LISTS, AND SEARCH Browse by book, Way/Virtue sections, theme, famous lines, all chapters, and author (including Laozi). DAILY CHAPTER AND SYSTEM FEATURES Daily Chapter rotates by solar terms, festivals, and seasons. Optional local notifications need no network. Home and Lock Screen widgets cover Daily Chapter, famous lines, mastery, and favorites. On iOS 18+, Control Center includes today, random, search, Study Hall, favorites, recite, famous lines, browse, and Seek the Tao. Siri and App Intents, up to four Home Screen quick actions, alternate icons, and deep links open chapters, daily, study, hunt, famous lines, favorites, mastered, history, settings, and guides. Optional iCloud merges favorites, lists, notes, history, mastery, and streaks bidirectionally. SETTINGS AND AUDIENCE Onboarding plus usage, widget, and Shortcuts guides. Settings cover appearance, accents, three languages, reading and speech details, tab visibility, notifications, data, help, and About. For systematic readers; bilingual and commentary learners; people who memorize through recitation and practice; anyone who wants Daily Chapter and widgets in daily life; and privacy-minded users who want full offline use without an account. Open iDao today: read one chapter, recite one line, note one insight, practice once. Through compare, commentary, and practice, walk toward the Way.
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Verdict
The clearest difference is price: 问易 Yi at Free against iDao's $0.99. iDao's advantage is in-app purchases (none vs 8). On ads, device support and iOS requirement 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
问易 Yi is free to download; iDao costs $0.99 up front. 问易 Yi sells 8 in-app purchases, starting at $5.99 per month. iDao asks for nothing beyond the download.
| Parameter | 问易 Yi | iDao |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium — better | Paid |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 105 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | OneSource AI PTE. LTD. | 天从 何 |
Customer experience
问易 Yi
iDao
In-app purchases
问易 Yi
- Yi Plus — Monthly$5.991 Month
- Yi Master — Monthly$12.991 Month
- Yi Plus — Yearly7 Days trial$49.991 Year
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- Yi Master — Yearly$99.991 Year
- 30 Yi Credits$0.99
- 10 Yi Credits$0.99
- 120 Yi Credits$2.99
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- 360 Yi Credits$6.99
iDao
No in-app purchases








