# Birds Complete Reference Guide vs HydroCrowd

The clearest difference is in-app purchases: HydroCrowd at none against Birds Complete Reference Guide's 1. HydroCrowd also leads on ads (none vs shown). Birds Complete Reference Guide's advantage is update cadence (every 5 weeks vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Birds Complete Reference Guide sells 1 one-off in-app purchase. HydroCrowd asks for nothing beyond the download.

Birds Complete Reference Guide ships an update every 5 weeks, HydroCrowd every 3 months. The most recent releases landed on September 30, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Birds Complete Reference Guide | HydroCrowd |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/birds-complete-reference-guide/id1363773995/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 171 MB | 61 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Faisal Akhtar](https://appshunter.io/developer/1783643697) | [SPOTTERON Gmbh](https://appshunter.io/developer/1378099707) |

## What reviewers say

### Birds Complete Reference Guide

[App page](https://appshunter.io/ios/app/birds-complete-reference-guide/id1363773995)

Explore a comprehensive guide to over 11,400 bird species, featuring high-quality songs, calls, and detailed information. Organize your findings with personal lists and access external resources like Wikipedia for deeper insights. This app helps you manage and learn about birds both online and offline.

**Highlights:** 11,400+ bird species coverage, High-quality bird songs and calls, Offline access to bird data, Search by English or Scientific name, Personalized favorite and finding lists, Links to Wikipedia, Avibase, and Ebird

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Advertisements | $0.99 | one-time |


### HydroCrowd

[App page](https://appshunter.io/ios/app/hydrocrowd/id6449194122)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Birds Complete Reference Guide free?

Birds Complete Reference Guide is free to download, with in-app purchases available.

### Is HydroCrowd free?

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

### Do Birds Complete Reference Guide or HydroCrowd have ads?

Birds Complete Reference Guide shows ads; HydroCrowd does not.

### Which is updated more often, Birds Complete Reference Guide or HydroCrowd?

Birds Complete Reference Guide ships an update every 5 weeks, and HydroCrowd every 3 months. Most recently, Birds Complete Reference Guide was updated on September 30, 2026 and HydroCrowd on September 10, 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.*