# CastleBird vs SiteNest

The clearest difference is in-app purchases: CastleBird at none against SiteNest's 3. CastleBird also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). SiteNest's advantage is update cadence (daily vs every 3 months). On price and ads there is nothing between them.

Both are free to download. SiteNest sells 3 in-app purchases, starting at $7.99 per 7 days. CastleBird asks for nothing beyond the download.

CastleBird ships an update every 3 months, SiteNest daily. The most recent releases landed on September 13, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | CastleBird | SiteNest |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Daily** |
| Size | 93 MB | 37 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [CastleBird](https://appshunter.io/developer/1689612442) | [Nicole Brown](https://appshunter.io/developer/1895239255) |

## What reviewers say

### CastleBird

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

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

**In-app purchases:** none


### SiteNest

[App page](https://appshunter.io/ios/app/sitenest/id6763265185)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SiteNest Pro | $7.99 | per 7 days |
| SiteNest Pro | $19.99 | per month |
| SiteNest Pro | $59.99 | per year |


## Frequently asked questions

### Is CastleBird free?

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

### Is SiteNest free?

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

### Do CastleBird or SiteNest have ads?

Neither CastleBird nor SiteNest shows ads.

### Which is updated more often, CastleBird or SiteNest?

CastleBird ships an update every 3 months, and SiteNest daily. Most recently, CastleBird was updated on September 13, 2026 and SiteNest on September 15, 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.*