# Derby Auction vs BirdFlow

The clearest difference is in-app purchases: Derby Auction at none against BirdFlow's 2. BirdFlow's advantage is update cadence (every 8 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. BirdFlow sells 2 in-app purchases, starting at $4.99 per month. Derby Auction asks for nothing beyond the download.

Derby Auction ships an update every 3 weeks, BirdFlow every 8 days. The most recent releases landed on September 6, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Derby Auction | BirdFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/derby-auction/id6749042246/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 8 days** |
| Monetization | Free | — |
| Size | 123 MB | 40 MB |
| Requires iOS | **14.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Handbid](https://appshunter.io/developer/433831142) | [SALIH UZEYIR OTHAN](https://appshunter.io/developer/6780049886) |

## What reviewers say

### Derby Auction

[App page](https://appshunter.io/ios/app/derby-auction/id6749042246)

Participate in live auctions for competitive racing pigeons. View detailed pedigrees, race records, and images before bidding. Track your winnings and connect with a community of pigeon fanciers.

**Highlights:** Live pigeon auctions, View pedigrees and race records, High-quality pigeon images, Track winnings and purchases, Connect with pigeon fanciers, Secure and easy-to-use interface

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

**In-app purchases:** none


### BirdFlow

[App page](https://appshunter.io/ios/app/birdflow/id6780049884)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BirdFlow Pro - Monthly | $4.99 | per month |
| BirdFlow Pro - Yearly | $49.99 | per year |


## Frequently asked questions

### Is Derby Auction free?

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

### Is BirdFlow free?

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

### Do Derby Auction or BirdFlow have ads?

Neither Derby Auction nor BirdFlow shows ads.

### Which is updated more often, Derby Auction or BirdFlow?

Derby Auction ships an update every 3 weeks, and BirdFlow every 8 days. Most recently, Derby Auction was updated on September 6, 2026 and BirdFlow on September 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*