# TimeHorse — Chinese Calendar Computation

> Chinese Calendar Computation (iPhone/iPad app by Hangzhou Yunqi Intelligence Technology Co., Ltd..)

- Source: https://appshunter.io/ios/app/timehorse/id6761045143 (this page in markdown: same URL + `.md`)
- Developer: [Hangzhou Yunqi Intelligence Technology Co., Ltd.](https://appshunter.io/developer/1586744811)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.2 · 8 MB
- Languages: American English
- Released: 2026-09-21
- Data updated: 2026-10-11
- User reviews in markdown: https://appshunter.io/ios/app/timehorse/id6761045143/reviews.md

## What is TimeHorse?

TimeHorse — Traditional Chinese Calendar & Time Computation Tool

TimeHorse is a professional computation tool for practitioners, researchers and students of the traditional Chinese calendar. It contains no interpretive or predictive content. It does one thing: convert a Gregorian moment into the time structures of the traditional Chinese calendar system, precisely and verifiably.

【Calendar & Time Computation】
• Sexagenary (Ganzhi) calendar: year, month, day and hour pillars, with months bounded by the 24 solar terms and correct handling of boundaries such as Lichun
• True solar time: longitude offset and equation of time (Spencer formula) computed automatically from the birthplace coordinates; the hour pillar follows local true solar time
• 24 solar terms: current term, next term and progress within the term, for any location worldwide
• Twelve double-hours (Shichen): live double-hour and progress ring, calibrated to true solar time
• Timeset chart: Ten Gods, Twelve Growth Phases, major cycles, annual and monthly cycles — all presented as computed, structured tables

【Qi Men Dun Jia Board】
• Board by double-hour: Yang/Yin cycle, board number, Earth and Heaven plates, Nine Stars, Eight Gates and Eight Deities
• Pure computation and display, with no readings or interpretation attached

【Built for Real Work】
• Multiple profiles with groups: keep separate records and filter by group
• Account cloud sync: sync records across devices; account deletion and data export supported
• Home Screen widget: the current hour pillars at a glance
• Apple Watch: the current Qi Men board on your wrist
• Fully offline: every calculation runs on device, no network required

【Technical Highlights】
• Powered by the open-source tyme calendar library — results can be independently verified
• True solar time for any latitude and longitude worldwide
• Dark Mode and Dynamic Type

【Subscription】
TimeHorse Pro offers monthly and yearly auto-renewable subscriptions, with a 3-day free trial for new subscribers. Payment is charged to your Apple ID account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings.
Privacy Policy: https://www.bestheme.ac.cn/privacy
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| 時間馬 PRO 月付 | $1.99 | per month |
| 時間馬 PRO 年付 | $12.99 | per year |



## Version history (last 3 releases)

### 1.0.3 — 2026-10-05

What's new in 1.0.3

• Sign in once and stay signed in — no more frequent re-logins
• Subscriptions: redeem offer codes and restore purchases inside the app; a subscription stays with the account it was bought on, with a clear notice when you switch accounts
• Account page: fixed verification codes not arriving when linking a phone number, and linking an Apple account doing nothing
• Phone sign-in and linking now go step by step, with clearer error messages and the keyboard no longer covering buttons

### 1.0.2 — 2026-10-05

What's new in 1.0.2

• Pillar lookup: enter the stem-branch pairs for year, month, day and hour to find the matching birth dates and double-hours
• Dates are now picked on a month calendar that shows the Chinese lunar date and solar terms under each day
• The add-person form shows the year, month, day and hour pillars as you fill it in
• Qi Men Dun Jia: choose a location and compute the board in local true solar time
• The equation-of-time correction for true solar time now follows the Settings switch
• Fixed a crash on leap-month dates and the Yang/Yin cycle after the winter solstice
• Birth dates range from 1900 to 2100

### 1.0 — 2026-09-21

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-11.*