ChaJi vs Cha Qi · 茶气
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ChaJi
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Cha Ji is a focused tea journal for gong fu cha enthusiasts. Keep a record of every tea you own, every brew you make, and the notes that help you improve, all stored privately on your device and synced via iCloud. JOURNAL Add teas with name, type, origin, vendor, harvest season, star rating, and a purchase link. Log brew sessions for each tea: temperature, leaf weight, water volume, vessel, steep times, and free-form notes. Mark whether you want to buy a tea again. Search and filter your whole collection by type, rating, or buy-again status. BREW SESSIONS Each tea keeps a numbered session log. Record the date, vessel (gaiwan, teapot, or custom), temperature, grams, milliliters, individual steep durations, tasting notes, and a "next time" note to guide your next brew. Session parameters carry over automatically so you spend less time filling in forms. BREWING REFERENCE The Brewing tab shows gongfu starting-point ratios for every major tea style: green, white (tender and aged), yellow, oolong, black, raw pu'er, and ripe pu'er - with temperature guidelines. Dial in your vessel size with the slider and the leaf amounts scale to match. CLEAN AND FOCUSED No accounts. No subscriptions. No social features. Just a well-organized place to keep your tea notes.
Cha Qi · 茶气
This app helps gongfu cha drinkers calculate tea session scores, estimate caffeine and L-theanine, and forecast sleep impact. It offers personalized brew recommendations based on desired mental states and includes a session timer and diary for logging experiences.
- Gongfu cha session calculator
- Caffeine and L-theanine estimation
- Sleep impact forecast
- TCM nature and Qi profile analysis
- Goal-driven brew recommendations
- Gongfu infusion timer
- Session diary and notes
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Cha Qi · 茶气 is a calculator and notebook for the gongfu cha drinker. WHAT IT DOES • Cha qi score on Lu Tong's Seven Bowls scale • Caffeine and L-theanine estimate • Sleep forecast — when you can fall asleep by 11pm • TCM nature 性 of the brew: cool, neutral, warm, hot • Qi profile: calm vs focus vs euphoria balance • Goal-driven recommendation: what to brew for the state you want SIX TABS • Session: pick your tea, vessel, and grams — see the calculation • Goal: set a state ("Bright focus", "Soft relaxation", "Deep dive", "Cha zui euphoria") and get a brew plan • Timer: gongfu infusion timer • Diary: log sessions, taste notes, mood • A/B: compare two brews side by side • Teas: library of 40 known varieties + your personal stash PRIVACY All your data — library, diary, notes — stays on your device. Nothing is uploaded. LANGUAGES Russian, English, Chinese (Simplified) with locale-aware tea names. OFFLINE Works without internet.
Screenshots
Verdict
ChaJi and Cha Qi · 茶气 are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
| Parameter | ChaJi | Cha Qi · 茶气 |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.1 — better |
| Further details — not scored | ||
| Size | 1 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Roy Zwambag | UMAR SEMENOV |
In-app purchases
ChaJi
No in-app purchases
Cha Qi · 茶气
No in-app purchases









