Planetary Hours vs Clavis
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Planetary Hours
This app provides a dynamic clock that displays planetary hours, adapting to the natural flow of the sun. It offers real-time calculations based on your location and supports various iOS features like Live Activities and Apple Watch complications for at-a-glance timing updates.
- Dynamic Island & Live Activities
- Apple Watch Complications
- StandBy & Lock Screen Widgets
- Interactive Home Screen Widgets
- Precision Astronomy Calculations
- Offline Processing
- Customizable Notifications
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Unlock the ancient rhythm of time with Planetary Hours. Unlike standard mechanical clocks, planetary hours adapt to the natural flow of the sun, dividing day and night into unequal segments ruled by the seven classical planets. Whether you practice electional astrology, planetary magic, or simply wish to align your schedule with cosmic rhythms, this app is your precision tool. EXCLUSIVE iOS FEATURES We leverage the full power of your device to keep you in sync without opening the app: Dynamic Island & Live Activities Track the current planetary ruler and remaining time instantly from your Lock Screen or Dynamic Island. Never miss a transition again. Pro Apple Watch Experience • Complications: Rich data on your wrist. See the current planet, symbol, and countdown directly on your favorite watch face (Modular, Infograph, Circular supported). • Standalone App: Fully functional on Apple Watch, no iPhone needed nearby. StandBy & Lock Screen Widgets Turn your iPhone into a magical altar clock at night. Our StandBy widgets look stunning on your nightstand, while Lock Screen widgets give you at-a-glance timing updates. Interactive Home Screen Widgets Beautiful, data-rich widgets that adapt to Light and Dark mode. View the current hour, next transition, and day/night progress directly from your Home Screen. CORE FEATURES • Precision Astronomy: Real-time calculation based on your exact GPS coordinates and local sunrise/sunset. • Chaldean Order: Accurate sequence for all 7 classical planets (Saturn to Moon). • Privacy First: All calculations happen offline on your device. No tracking, no data collection. • Notification System: Get notified exactly when the planetary hour changes. Download now to synchronize your life with the solar rhythm.
Clavis
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Planetary Clock is a precise, beautifully simple planetary-hours clock. Since antiquity, each day and night has been divided into twelve unequal hours, each governed by one of the seven classical planets in the Chaldean order. Planetary Clock computes these hours with astronomical accuracy from the true sunrise and sunset in the city you choose. • Current planetary hour — see which planet rules right now, with a live countdown to the next hour. • Apple Watch — the ruling planet and the minutes left in this hour, right on your watch face and in the Smart Stack. Hours are computed on the watch, so it works even when your iPhone is out of reach. • Ruler of the day — the classical planet that governs today. • Upcoming hours — a clear timeline of the planetary hours ahead, from sunrise to sunset and through the night. • Moon phase — the current phase and illumination of the Moon. • Monthly calendar — lunar phases and planetary hours at a glance. • 3D chart — your birth chart rendered in three dimensions, with transits and aspects. • Sync across devices — sign in and your calendar and chart settings follow you. Planetary Clock is a subscription app. A monthly or annual plan unlocks everything, with a free trial when your Apple Account is eligible. No ads, and no tracking. Signing in with Apple or Google keeps your data in step across your devices. You pick your city by searching for it — the app does not use GPS — and every planetary hour is computed from that city's coordinates and time zone, so the same place is used on every device. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Clavis at Free against Planetary Hours's $4.99. Clavis also leads on update cadence (every 5 days vs monthly). On ads, in-app purchases, device support 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
Clavis is free to download; Planetary Hours costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Planetary Hours ships an update monthly, Clavis every 5 days. The most recent releases landed on October 15, 2026 and October 5, 2026 respectively.
| Parameter | Planetary Hours | Clavis |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Requires iOS | 17 | 16.2 — better |
| Further details — not scored | ||
| Size | 16 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | 雪 蔺 | Pedro Henrique Oliveira Sousa |
In-app purchases
Planetary Hours
No in-app purchases
Clavis
No in-app purchases









