小花 Xiaohua vs The Formula Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
小花 Xiaohua
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小花 Xiaohua — TCM Clinical Handbook Check the almanac, read the classics, memorize formula verses and look up formulas, herbs and acupoints — and jot down whatever's on your mind. Everything is built in and works offline. Made for iPhone Duo: keep Today on the cover, and open into split Reading, Notes and Medical layouts. HOME — Daily almanac & sky · Weather: current conditions and a 3-day forecast (Apple WeatherKit) · Almanac: lunar date, day pillar, do/don't, and more · Five Movements & Six Qi: yearly movement, Sitian/Zaiquan and current qi step · Sky: moon phase and the 24 solar terms · BaZi: four pillars, ten gods and luck cycles READING — Reference library · Classics: Suwen, Lingshu, Shanghanlun, Jingui, Wenbing and more in full, with a clause reader (progress, font size, paper/night themes, bookmarks) · Recitation levels: clauses graded 1-3 against the official TCM classics exam syllabus, browsable by level — built for exam prep · Formula handbook: five classical verse collections (Tangtou Gejue, Shifang Gekuo, Changsha Gangekuo, Jingui Gangekuo, Shanbu Mingyi Fanglun) — recite or search · Formulas / Herbs / Acupoints: fully bundled; search by Chinese, pinyin or English · Unified search and favorites NOTES — card-based notes · Card feed, #tags, stars, archive and images (encrypted on device) · Save web pages or articles from the system share sheet · Timed reminders (optionally mirrored to the system Reminders app) PRIVACY · No account required; data stays on your device by default · Images and text encrypted (AES-GCM); optional iCloud private-database sync (end-to-end encrypted) · No ads, no third-party analytics SDKs Content is for study and reference only and is not medical advice.
The Formula Calculator
This app serves as a comprehensive formula library and calculator, designed for tradespeople, engineers, and students. It offers over 200 formulas across various scientific disciplines, with automatic unit conversion and offline functionality.
- Extensive formula library (200+)
- Automatic unit conversion
- Offline functionality
- Searchable formulas and elements
- Light and dark mode
- Multi-language support
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Select a formula, enter the values – the app calculates the rest. Units convert automatically. Formula Calculator is a formula library and a calculator in one. Instead of looking things up in a handbook and then calculating separately, both happen in the same view. Built for the trades, master craftsman training, engineering and study. Over 200 formulas, including: Geometry and areas, volume, mechanics and strength of materials, heat, fluid mechanics and pumps, electrical engineering, acoustics, hydraulics, chemistry and physics. Use the formulas, instead of leaving everything to AI: Periodic table (use molar mass directly), density table, building materials, formula symbols as in a technical handbook, unit converter with SI prefixes. Charts such as LogPH and h-x. Search finds formulas, elements and groups – for example Ohm, area of a circle, alkali metals or the periodic table. • Fully offline • No account, no ads, no tracking • Light and dark mode • German and many other languages • Saves recent calculations Developed by a German master craftsman. Available languages: German, English, French, Spanish, Portuguese, Italian, Dutch, Polish, Czech, Slovak, Hungarian, Romanian, Croatian, Danish, Swedish, Norwegian, Finnish, Turkish, Russian, Ukrainian, Arabic, Hebrew, Hindi, Thai, Vietnamese, Indonesian, Chinese, Japanese, Korean Also on Apple Watch: a simplified version for quick lookup or calculations with units.
Screenshots
Verdict
The clearest difference is iOS requirement: The Formula Calculator at 15.0 against 小花 Xiaohua's 17.0. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
小花 Xiaohua ships an update weekly, The Formula Calculator every 5 days. Both last shipped on November 10, 2026.
| Parameter | 小花 Xiaohua | The Formula Calculator |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Weekly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | DA JI | Sidney Thom |
In-app purchases
小花 Xiaohua
No in-app purchases
The Formula Calculator
No in-app purchases





