# Meg Authenticator vs BirdsID

The clearest difference is in-app purchases: Meg Authenticator at none against BirdsID's 1. Meg Authenticator also leads on ads (none vs shown). BirdsID's advantage is iOS requirement (15.5 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. BirdsID sells 1 one-off in-app purchase. Meg Authenticator asks for nothing beyond the download.

Meg Authenticator ships an update every 3 weeks, BirdsID every 2 weeks. The most recent releases landed on October 30, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Meg Authenticator | BirdsID |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Size | 17 MB | 53 MB |
| Requires iOS | 17.0 | **15.5** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jonas Myhr Refseth](https://appshunter.io/developer/1459034001) | [Edgar Zuniga](https://appshunter.io/developer/1647129574) |

## What reviewers say

### Meg Authenticator

[App page](https://appshunter.io/ios/app/meg-authenticator/id6470204628)

**Features:** Vision Pro support

**In-app purchases:** none


### BirdsID

[App page](https://appshunter.io/ios/app/birdsid-identify-birds/id6505007856)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Meg Authenticator free?

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

### Is BirdsID free?

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

### Do Meg Authenticator or BirdsID have ads?

BirdsID shows ads; Meg Authenticator does not.

### Which is updated more often, Meg Authenticator or BirdsID?

Meg Authenticator ships an update every 3 weeks, and BirdsID every 2 weeks. Most recently, Meg Authenticator was updated on October 30, 2026 and BirdsID on November 8, 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.*