# Siccura Work vs CastleBird

The clearest difference is update cadence: Siccura Work at every 6 weeks against CastleBird's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Siccura Work ships an update every 6 weeks, CastleBird every 3 months. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Siccura Work | CastleBird |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Size | 297 MB | 93 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Siccura Ltd.](https://appshunter.io/developer/1396065873) | [CastleBird](https://appshunter.io/developer/1689612442) |

## What reviewers say

### Siccura Work

[App page](https://appshunter.io/ios/app/siccura-work/id1423585117)

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

**In-app purchases:** none


### CastleBird

[App page](https://appshunter.io/ios/app/castlebird/id6449547159)

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

**In-app purchases:** none


## Frequently asked questions

### Is Siccura Work free?

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

### Is CastleBird free?

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

### Do Siccura Work or CastleBird have ads?

Neither Siccura Work nor CastleBird shows ads.

### Which is updated more often, Siccura Work or CastleBird?

Siccura Work ships an update every 6 weeks, and CastleBird every 3 months. Most recently, Siccura Work was updated on October 29, 2026 and CastleBird on October 25, 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.*