# Celtic Tree Calendar vs Celestium

The clearest difference is review sentiment: Celestium at 100% against Celtic Tree Calendar's 0%. Celestium also leads on price (Free vs $0.99) and update cadence (every 5 days vs every 3 weeks). Celtic Tree Calendar's advantage is in-app purchases (none vs 2) and chart position (#190 vs unranked). On ads, device support and iOS requirement there is nothing between them.

Celestium is free to download; Celtic Tree Calendar costs $0.99 up front. Celestium sells 2 in-app purchases, starting at $6.99 per month. Celtic Tree Calendar asks for nothing beyond the download.

Celtic Tree Calendar ships an update every 3 weeks, Celestium every 5 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Celtic Tree Calendar | Celestium |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/celestium-cosmic-compass/id6761672904/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Paid | **Freemium** |
| Best chart rank | **#190** | — |
| Size | 33 MB | 146 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Stuart Woolley](https://appshunter.io/developer/315697638) | [Jhinna Salinas](https://appshunter.io/developer/1850224128) |

## What reviewers say

### Celtic Tree Calendar

[App page](https://appshunter.io/ios/app/celtic-tree-calendar/id474222176)

**Currently charting:** #190 Top Paid · Lifestyle (US App Store)

Explore your birth tree and its associated Ogham letter, folklore, and meaning. This app offers beautifully illustrated botanical artwork and genuine Ogham scholarship, allowing you to discover the Celtic Tree Year and share tree cards with friends. It works offline and is private by design.

**Highlights:** Discover your birth tree and Ogham letter, Interactive Celtic Tree Year wheel, Gallery of original botanical illustrations, Deep lore for each sign, Authentic Ogham information, Home-screen widgets, Share tree cards

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Celestium

[App page](https://appshunter.io/ios/app/celestium-cosmic-compass/id6761672904)

Explore personalized astrological insights for life's decisions. Discover ideal locations for love, work, and growth, and understand daily cosmic weather. Engage in guided rituals and connect with others through shared astrological charts.

**Highlights:** Location scoring for love, work, vitality, and growth, Daily cosmic weather and moon phase tracking, Guided rituals for moon phases, Couples and group chart analysis, On-device chart computation with no tracking, AI interpretations via user's Anthropic API key

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $6.99 | per month |
| Premium Yearly | $42.99 | per year |


## Frequently asked questions

### Is Celtic Tree Calendar free?

Celtic Tree Calendar costs $0.99, with no in-app purchases.

### Is Celestium free?

Celestium is free to download, with in-app purchases available.

### Do Celtic Tree Calendar or Celestium have ads?

Neither Celtic Tree Calendar nor Celestium shows ads.

### Which is updated more often, Celtic Tree Calendar or Celestium?

Celtic Tree Calendar ships an update every 3 weeks, and Celestium every 5 days. Most recently, Celtic Tree Calendar was updated on November 6, 2026 and Celestium on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*