# Bird Code Lookup vs Hearing Decibel Pro

The clearest difference is in-app purchases: Bird Code Lookup at none against Hearing Decibel Pro's 3. Bird Code Lookup also leads on ads (none vs shown). Hearing Decibel Pro's advantage is update cadence (fortnightly vs every 40 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Hearing Decibel Pro sells 3 in-app purchases, starting at $4.99 per month. Bird Code Lookup asks for nothing beyond the download.

Bird Code Lookup ships an update every 40 months, Hearing Decibel Pro fortnightly. The most recent releases landed on September 17, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Bird Code Lookup | Hearing Decibel Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 40 months | **Fortnightly** |
| Size | 212 MB | 15 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [PVI Maine LLC](https://appshunter.io/developer/384927995) | [Radhesh Gowd](https://appshunter.io/developer/1893111112) |

## What reviewers say

### Bird Code Lookup

[App page](https://appshunter.io/ios/app/bird-code-lookup/id1613972286)

**Features:** macOS Compatibility

**In-app purchases:** none


### Hearing Decibel Pro

[App page](https://appshunter.io/ios/app/hearing-decibel-pro/id6762517913)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Annual | $29.99 | per year |
| Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Bird Code Lookup free?

Bird Code Lookup is free to download, with no in-app purchases.

### Is Hearing Decibel Pro free?

Hearing Decibel Pro is free to download, with in-app purchases available.

### Do Bird Code Lookup or Hearing Decibel Pro have ads?

Hearing Decibel Pro shows ads; Bird Code Lookup does not.

### Which is updated more often, Bird Code Lookup or Hearing Decibel Pro?

Bird Code Lookup ships an update every 40 months, and Hearing Decibel Pro fortnightly. Most recently, Bird Code Lookup was updated on September 17, 2026 and Hearing Decibel Pro on September 13, 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.*