Clavis vs AnyCalendar
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
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. โข Current planetary hour โ see which planet rules right now, with a live countdown to the next hour. โข Apple Watch โ 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. โข Widgets โ the ruling planet and the minutes left in this hour on your Home Screen and Lock Screen, with the hours ahead and the whole day in the larger sizes. โข Ruler of the day โ the classical planet that governs today. โข Upcoming hours โ a clear timeline of the planetary hours ahead, from sunrise to sunset and through the night. โข Moon phase โ the current phase and illumination of the Moon. โข Monthly calendar โ lunar phases and planetary hours at a glance. โข 3D chart โ your birth chart rendered in three dimensions, with transits and aspects. โข Clavis AI (optional subscription) โ ask about the ruler of the hour, today's events or a planet in your chart; nothing is sent until you agree. โข Sync across devices โ sign in and your calendar and chart settings follow you. Planetary Clock is free: the hours, the calendar, the 3D chart, the widgets and the Apple Watch app need no subscription. The optional Clavis AI subscription, monthly or annual with a free trial when your Apple Account is eligible, adds an assistant that answers questions about your day, the planetary hours and your chart, in the tone of the traditions. No ads, and no tracking. If you prefer not to subscribe, you can support the app with a tip, which unlocks nothing, or with a support pass that unlocks Clavis AI for 30 or 90 days, with no automatic renewal. Signing in with Apple or Google keeps your data in step across your devices. You pick your city by searching for it โ the app does not use GPS โ 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/
AnyCalendar
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AnyCalendar lets you view, convert, and compare dates across 16 calendar systems from around the world. Whether you're tracking Islamic holidays, following the Persian new year, checking the Hebrew date, or just curious about the Mayan Long Count, AnyCalendar has you covered. Supported calendars: - Gregorian, Julian, ISO Week Date - Islamic (Hijri), Persian (Solar Hijri) - Hebrew, Chinese, Buddhist, Indian Civil (Saka) - Ethiopian (Ge'ez), Coptic, Baha'i (Badi) - Julian Day Number, Unix Timestamp, Mayan Long Count Features: Today at a glance See today's date in every calendar system. Tap any date to copy it to your clipboard. Reorder and hide calendars to show what matters to you. Date conversion Convert any date between any two calendar systems with full timezone support. Side-by-side comparison View two calendar month grids aligned day-by-day. Navigate months and see how dates line up across systems. Home screen widgets Add small or medium widgets to your home screen showing today's date in your chosen calendars. Dark mode, haptic feedback, and native script display included. Your preferences are saved between sessions.
Screenshots
Verdict
The clearest difference is in-app purchases: AnyCalendar at none against Clavis's 5. AnyCalendar also leads on iOS requirement (15.1 vs 17.2). Clavis's advantage is update cadence (every 4 days vs every 3 months). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Clavis sells 5 in-app purchases, starting at $4.99 per month. AnyCalendar asks for nothing beyond the download.
Clavis ships an update every 4 days, AnyCalendar every 3 months. Both last shipped on October 31, 2026.
| Parameter | Clavis | AnyCalendar |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days โ better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 17.2 | 15.1 โ better |
| Further details โ not scored | ||
| Size | 40 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Pedro Henrique Oliveira Sousa | Kaveh Tehrani |
In-app purchases
Clavis
- Clavis AI Monthly3 Days trial$4.991 Month
- Clavis AI Yearly3 Days trial$29.991 Year
- Tip$1.99
- Support + 30 days of AI$5.99
- Support + 90 days of AI$14.99
AnyCalendar
No in-app purchases









