YOJO(養生) vs Hydro Paint
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
YOJO(養生)
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Rediscover the rhythm of living with the sun, guided by Edo-period timekeeping. YOJO weaves together three ancient wellness traditions — Japanese, Chinese, and Indian — with modern health technology into a new kind of wellness companion. ◆ Three Wisdoms, One Natural Rhythm YŌJŌKUN — Edo Preventive Medicine From Japan's oldest health book (1713) by Ekiken Kaibara. Eat to 80% fullness, choose seasonal foods, rise with the sun. Timeless principles for daily well-being. TEMPORAL HOURS — Time by the Sun The Edo-era "fudō jikihō" divides day and night into twelve periods based on sunrise and sunset. Each period is symbolized by a zodiac animal (Rat, Ox, Tiger…) and shifts naturally with the seasons. MERIDIAN CLOCK — Organ Vitality Cycles Traditional Chinese Medicine maps twelve organ meridians to two-hour windows throughout the day. Know which organ is most active right now and optimize your meals, movement, and rest. AYURVEDA — Constitution-Based Wellness 5,000 years of Indian wisdom. Discover your Dosha type — Vata, Pitta, or Kapha — and receive personalized food, spice, and lifestyle recommendations. ◆ Key Features FREE: • Real-time Temporal Hour Clock — See the current "koku" and countdown to the next • 12-Period Daily Schedule — Full day view with wellness advice for each period • Dosha Quiz — Discover your Ayurvedic body type • Period Change Notifications — Stay aware of natural rhythm shifts PREMIUM ($6.99 one-time purchase, early price): • Wellness Checklists — Track hydration, eye breaks, nighttime routines, and Ayurvedic practices daily • Meal Log — Record meals aligned with meridian peak hours • Alignment Score — Daily score (0-100) across sleep, meals, exercise, hydration, and HRV • Apple Health Integration — Auto-import steps, HRV, and sleep data • Data Export — CSV/JSON export for personal analysis ◆ Who YOJO Is For • Anyone concerned about sleep quality or circadian rhythm disruption • Those curious about traditional Eastern medicine and Ayurveda • People seeking a more natural, sun-aligned daily rhythm • Anyone wanting to build small, meaningful daily wellness habits Yield to the rhythm of the sun. Listen to your body's wisdom. 300-year-old knowledge, guiding your modern path to harmony. Terms of Use (EULA): https://yojo-wellness.web.app/terms Privacy Policy: https://yojo-wellness.web.app/privacy
Hydro Paint
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Hydro Paint turns daily hydration into a quiet ritual with art. Each day starts with a blank canvas. As you drink, layers of a classic ukiyo-e painting are gradually revealed. Tilt your phone and the painting responds with parallax and light. Tap the card and it sways. Reach your goal and the full artwork comes alive with a celebration. Currently featuring three interactive paintings from Hokusai's "Thirty-six Views of Mount Fuji," with more works by Hiroshige, Koitsu, and others on the way. FEATURES • Art Card with motion parallax, dynamic lighting, and tap interaction — powered by device sensors • Ukiyo-e masterworks with hand-separated layers that reveal as you hydrate • Radial quick-add menu: long press to fan open, slide to choose a drink, hold to adjust the amount • Track water, coffee, tea, milk, juice, soda, and more • Home Screen widget that shows your painting progress and lets you add water with one tap • Gallery to browse and choose your daily painting • Data Room to review today's intake with category filters and swipe-to-delete • Customizable daily goal and quick-add slots • Gentle encouragement messages and ukiyo-e trivia throughout the day • Haptic feedback • Localized in English, Chinese and Japanese • No account required. All data stays on your device.
Screenshots
Verdict
The clearest difference is in-app purchases: Hydro Paint at none against YOJO(養生)'s 2. YOJO(養生)'s advantage is device support (3 vs 1). On price, ads 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
Both are free to download. YOJO(養生) sells 2 in-app purchases, starting at $1.99 per month. Hydro Paint asks for nothing beyond the download.
| Parameter | YOJO(養生) | Hydro Paint |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, Apple Watch — better | iPhone |
| Requires iOS | 17.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 39 MB | 38 MB |
| Age rating | 12+ | 4+ |
| Developer | Takashi Higashi | RUNXI DENG |
In-app purchases
YOJO(養生)
- Monthly$1.991 Month
- Premium Lifetime$6.99
Hydro Paint
No in-app purchases








