# iBird Pro vs WR S

The clearest difference is iOS requirement: WR S at 15.0 against iBird Pro's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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 2, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | iBird Pro | WR S |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Size | 20 MB | 67 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [SFS Group Germany GmbH (DE)](https://appshunter.io/developer/1493970008) | [Rescue Digital Systems Gmbh](https://appshunter.io/developer/1533789837) |

## What reviewers say

### iBird Pro

[App page](https://appshunter.io/ios/app/ibird-pro/id1493970009)

**In-app purchases:** none


### WR S

[App page](https://appshunter.io/ios/app/wr-s-force/id6449596231)

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

**In-app purchases:** none


## Frequently asked questions

### Is iBird Pro free?

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

### Is WR S free?

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

### Do iBird Pro or WR S have ads?

Neither iBird Pro nor WR S shows ads.

### Which is updated more often, iBird Pro or WR S?

iBird Pro ships an update every 4 months, and WR S every 4 months. Most recently, iBird Pro was updated on October 2, 2026 and WR S on October 14, 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.*