# CalAdvent vs TCDC Libraries

CalAdvent and TCDC Libraries are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | CalAdvent | TCDC Libraries |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Size | 28 MB | 50 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Eric Smith](https://appshunter.io/developer/415133551) | [Department of Internal Affairs](https://appshunter.io/developer/1442760439) |

## What reviewers say

### CalAdvent

[App page](https://appshunter.io/ios/app/caladvent/id1439383338)

**Features:** macOS Compatibility

**In-app purchases:** none


### TCDC Libraries

[App page](https://appshunter.io/ios/app/tcdc-libraries/id1461713427)

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

**In-app purchases:** none


## Frequently asked questions

### Is CalAdvent free?

CalAdvent is free to download, with no in-app purchases.

### Is TCDC Libraries free?

TCDC Libraries is free to download, with no in-app purchases.

### Do CalAdvent or TCDC Libraries have ads?

Neither CalAdvent nor TCDC Libraries shows ads.

### Which is updated more often, CalAdvent or TCDC Libraries?

CalAdvent ships an update every 4 months, and TCDC Libraries every 4 months. Most recently, CalAdvent was updated on October 10, 2026 and TCDC Libraries on October 4, 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.*