# i vs Bird Identifier

The clearest difference is in-app purchases: i at none against Bird Identifier's 2. i also leads on update cadence (monthly vs every 3 months) and iOS requirement (15.1 vs 17.5). On price, ads and device support there is nothing between them.

Both are free to download. Bird Identifier sells 2 in-app purchases, starting at $2.99 per 7 days. i asks for nothing beyond the download.

i ships an update monthly, Bird Identifier every 3 months. The most recent releases landed on November 2, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | i | Bird Identifier |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Size | 29 MB | 2 MB |
| Requires iOS | **15.1** | 17.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MENTAL INFORMATICS P.C.](https://appshunter.io/developer/1575222783) | [Black Cigar Apps, LLC](https://appshunter.io/developer/552986097) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-nucleus/id1455339012)

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

**In-app purchases:** none


### Bird Identifier

[App page](https://appshunter.io/ios/app/bird-identifier-birding-id/id6744591408)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $2.99 | per 7 days |
| Yearly Subscription | $9.99 | per year |


## Frequently asked questions

### Is i free?

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

### Is Bird Identifier free?

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

### Do i or Bird Identifier have ads?

Neither i nor Bird Identifier shows ads.

### Which is updated more often, i or Bird Identifier?

i ships an update monthly, and Bird Identifier every 3 months. Most recently, i was updated on November 2, 2026 and Bird Identifier on October 28, 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.*