True Solar Time (真太陽時) vs I Ching Calendar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
True Solar Time (真太陽時)
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真太陽時 - 融合天文算法與包浩斯美學的八字工具 專為玄學愛好者與專業命理師打造,這不僅是一個計算器,更是一件掌中的藝術品。摒棄傳統玄學 App 的老舊介面,我們採用極簡 **包浩斯 (Bauhaus)** 設計風格,讓排盤清晰、精準、優雅。 **核心功能:** 1. **極致精準的真太陽時** * 採用天文算法 (Jean Meeus),精確計算「均時差 (Equation of Time)」。 * 結合 GPS 定位與經度校正,還原最真實的太陽時間。 * 內置全球熱門城市數據庫 (香港、台北、北京、紐約、倫敦等),自動匹配時區與夏令時間 (DST)。 2. **專業八字排盤** * 支援四柱 (年、月、日、時) 排列。 * **五行配色**:直觀顯示金(黃)、木(青)、水(藍)、火(紅)、土(啡) 五行屬性。 * 介面簡潔,專注於天干地支的核心資訊。 3. **農曆與節氣** * 精準對照農曆日期。 * 即時顯示「上一節氣」與「下一節氣」的交接時間與天數差距。 4. **包浩斯美學設計** * 大膽的幾何色塊與粗線條設計。 * 米色護眼背景,配合高對比度文字,閱讀舒適。 **適用對象:** * 八字命理師 * 風水師 * 中國傳統文化愛好者 **立即下載,體驗最精準、最優雅的真太陽時計算工具!**
I Ching Calendar
This comprehensive folk custom app offers a perpetual calendar, auspicious date selection, numerology analysis, and health management tools. It integrates traditional Zhouyi culture with modern planning features for daily life and significant events.
- Perpetual calendar with Gregorian & lunar lookup
- Auspicious date selector for events
- Traditional numerology analysis (Eight-character, marriage matching)
- Eastern & Western divination (hexagrams, Tarot, horoscopes)
- Seasonal health manager with period tracker
- Name numerology suite for baby naming and renaming
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1. App Introduction Zhouyi Perpetual Calendar is an all-in-one folk custom APP for calendar lookup, auspicious date picking, numerology, schedule planning, naming and health care. It combines traditional Zhouyi sexagenary culture with modern schedule management, serving all your needs of date checking, event planning, eight-character analysis, naming and regimen as a portable daily assistant. 2. Core Functions 2.1 All-in-one Perpetual Calendar Supports bidirectional Gregorian & lunar lookup from 1 AD to 9999 AD with one-tap switch. It contains full calendar data: 24 solar terms, festivals, sexagenary cycles, zodiacs, Five Elements, constellations and hours, to check any past or future date easily without paper almanacs. 2.2 Smart Schedule Reminder Supports to-do lists, birthdays, anniversaries, countdowns and custom alarms. Match with daily almanac do’s & don’ts to avoid missing important plans. 2.3 Professional Auspicious Date Selector Daily updated do’s and don’ts cover weddings, openings, house moves, construction, contracts, medical visits and more. Built-in lucky date filter & date day calculator simplify picking ideal days for major events. 2.4 Traditional Numerology Tools Eight-character chart: analyze Five Elements, ten gods and yearly fortune Marriage matching: evaluate compatibility of two birth charts Purple Star, Qimen Dunjia, Liuren divination for advanced I Ching fans 2.5 Eastern & Western Divination Daily hexagram, Tarot reading for love, career and wealth; Western horoscopes, zodiac fortune and synastry charts offer multiple fortune references. 2.6 Seasonal Health Manager Female period tracker auto-calculates menstruation and ovulation. 12-hour TCM regimen guides provide organ care tips based on daily Five Elements. 2.7 Name Numerology Suite Five-Grid name test for luck, career and marriage; baby naming matches birth eight-character Five Elements preferences; complete surname library for newborn and adult renaming. 3. App Highlights Integrates ancient Zhouyi almanac with modern planner; 7 modules combined in one app; nearly 10,000 years of calendar data; simple intuitive interface; fit for daily users and I Ching enthusiasts. 4. Target Users People checking lunar calendars, solar terms and almanac taboos; users picking lucky dates for weddings, openings and relocation; those needing birthday & to-do reminders; fans of eight-character, Purple Star, Tarot and astrology; expecting families naming babies and analyzing Five Elements; users tracking cycles and practicing seasonal health care. 5. Our Vision More than a digital almanac, Zhouyi Perpetual Calendar is your portable folk culture library & life helper. Based on precise calendar data and authentic I Ching theories, it delivers one-stop services for daily arrangements, numerology, naming and health management. Note: If you subscribe via Apple, payment will be charged to App Store Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Account will be charged for renewal within 24 hours prior to the end of the current period at the rate of the selected plan. Subscriptions and auto-renewal may be managed by going to Account Settings after purchase. Terms of Service: https://docs.qq.com/doc/p/c4daffb608858ccb2630aff0fd24f321c541cdf1 Privacy Policy: https://docs.qq.com/doc/DUU1Sd1hoSWxqV1Jw
Screenshots
Verdict
The clearest difference is ads: I Ching Calendar at none against True Solar Time (真太陽時)'s shown. True Solar Time (真太陽時)'s advantage is update cadence (every 5 days vs every 5 weeks) and iOS requirement (13.0 vs 17.6). On price, 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. True Solar Time (真太陽時) sells 1 one-off in-app purchase and I Ching Calendar sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
True Solar Time (真太陽時) ships an update every 5 days, I Ching Calendar every 5 weeks. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.
| Parameter | True Solar Time (真太陽時) | I Ching Calendar |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 days — better | Every 5 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 24 MB | 13 MB |
| Age rating | 17+ | 4+ |
| Developer | Tsz Fung Shing | 帮兰 吴 |
In-app purchases
True Solar Time (真太陽時)
- 購買移除廣告$4.99
I Ching Calendar
- Professional$1.997 Days
- Professional$2.991 Month
- Professional$19.991 Year
Questions
Is True Solar Time (真太陽時) free?
Is I Ching Calendar free?
Do True Solar Time (真太陽時) or I Ching Calendar have ads?
Which is updated more often, True Solar Time (真太陽時) or I Ching Calendar?
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