# dB Decibel vs Auth Code

The clearest difference is ads: Auth Code at none against dB Decibel's shown. Auth Code also leads on ratings volume (6 vs 1) and iOS requirement (16.6 vs 18.0). dB Decibel's advantage is update cadence (every 4 days vs every 10 days). On price, rating, review sentiment and in-app purchases there is nothing between them.

Both are free to download. dB Decibel sells 1 one-off in-app purchase and Auth Code sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for dB Decibel against 5.0 for Auth Code. That said, the two scores are not equally well evidenced: Auth Code has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

dB Decibel ships an update every 4 days, Auth Code every 10 days. The most recent releases landed on October 14, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | dB Decibel | Auth Code |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/db-decibel-sound-level-meter/id6777625723/reviews) | [5.0 (6 ratings)](https://appshunter.io/ios/app/auth-code-2fa-authenticator/id6813939709/reviews) |
| Number of ratings | 1 | **6** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 10 days |
| Monetization | Free with in-app purchases | Freemium |
| Size | 4 MB | 26 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Levin David Schwab](https://appshunter.io/developer/1896432297) | [Ivanna Koryliak](https://appshunter.io/developer/1755987498) |

## What reviewers say

### dB Decibel

[App page](https://appshunter.io/ios/app/db-decibel-sound-level-meter/id6777625723)

This application measures ambient noise levels in decibels in real-time, providing honest readings by indicating when sounds are too low or too loud for the microphone. It offers various professional metrics and features for detailed sound analysis, with an option for advanced tools via a one-time purchase.

**Highlights:** Real-time dB(A) sound level measurement, Peak hold and honest readings (clipping/near-silence detection), Professional metrics (Leq, L10, L90), Safe-listening time estimate, Dominant frequency and live graph, Evidence Mode for noise-event logging, Live Sound ID for noise identification

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decibel Pro | $4.99 | one-time |


### Auth Code

[App page](https://appshunter.io/ios/app/auth-code-2fa-authenticator/id6813939709)

Secure your online accounts with this app that generates one-time verification codes for services supporting two-factor authentication. Easily add accounts by scanning QR codes, importing images, or manually entering setup keys. Offers features like app lock, encrypted backups, and optional iCloud sync for enhanced security and convenience.

**Highlights:** One-time verification codes (TOTP/HOTP), QR code scanning for account setup, Import from Google Authenticator, App Lock with Face ID/Touch ID, Encrypted backups, Optional iCloud Sync, Home Screen Widget

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $9.99 | per month |
| Premium Yearly | $39.99 | per year |


## Frequently asked questions

### Is dB Decibel free?

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

### Is Auth Code free?

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

### Which has better reviews, dB Decibel or Auth Code?

dB Decibel and Auth Code are both rated 5.0 out of 5 on the App Store, from 1 and 6 ratings respectively.

### Do dB Decibel or Auth Code have ads?

dB Decibel shows ads; Auth Code does not.

### Which is updated more often, dB Decibel or Auth Code?

dB Decibel ships an update every 4 days, and Auth Code every 10 days. Most recently, dB Decibel was updated on October 14, 2026 and Auth Code on October 21, 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.*