# Celtic Tree Calendar vs tzolkInSight

The clearest difference is price: tzolkInSight at Free against Celtic Tree Calendar's $0.99. tzolkInSight also leads on update cadence (daily vs every 3 weeks) and iOS requirement (15.0 vs 18.0). Celtic Tree Calendar's advantage is in-app purchases (none vs 3). On ads and device support there is nothing between them.

tzolkInSight is free to download; Celtic Tree Calendar costs $0.99 up front. tzolkInSight sells 3 one-off in-app purchases. Celtic Tree Calendar asks for nothing beyond the download.

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

## The numbers

| Metric | Celtic Tree Calendar | tzolkInSight |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Paid | — |
| Size | 33 MB | 15 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Stuart Woolley](https://appshunter.io/developer/315697638) | [Alexandre Ferran](https://appshunter.io/developer/1885184852) |

## What reviewers say

### Celtic Tree Calendar

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

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


### tzolkInSight

[App page](https://appshunter.io/ios/app/tzolkinsight/id6760587618)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small coffee | $1.99 | one-time |
| Support | $3.99 | one-time |
| Big support | $8.99 | one-time |


## Frequently asked questions

### Is Celtic Tree Calendar free?

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

### Is tzolkInSight free?

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

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

Neither Celtic Tree Calendar nor tzolkInSight shows ads.

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

Celtic Tree Calendar ships an update every 3 weeks, and tzolkInSight daily. Most recently, Celtic Tree Calendar was updated on November 6, 2026 and tzolkInSight 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.*