# NotiZen Pro vs dB Meter

The clearest difference is in-app purchases: dB Meter at none against NotiZen Pro's 3. NotiZen Pro's advantage is price ($10.49 vs $12.99). On update cadence, ads, device support and iOS requirement there is nothing between them.

NotiZen Pro costs $10.49 and dB Meter $12.99 up front. NotiZen Pro sells 3 in-app purchases, starting at $2.99 per month. dB Meter asks for nothing beyond the download.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 11, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | NotiZen Pro | dB Meter |
| --- | --- | --- |
| Price | **$10.49** | $12.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Size | 3 MB | 4 MB |
| Requires iOS | 17 | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | +9 | 4+ |
| Developer | [贺 周](https://appshunter.io/developer/1815397078) | [Birkan Aksoy](https://appshunter.io/developer/1626910993) |

## What reviewers say

### NotiZen Pro

[App page](https://appshunter.io/ios/app/notizen-pro/id6762554707)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NotiZen Pro Monthly | $2.99 | per month |
| NotiZen Pro Yearly | $19.99 | per year |
| NotiZen Pro Lifetime | $49.99 | one-time |


### dB Meter

[App page](https://appshunter.io/ios/app/db-meter-sound-level/id6784445985)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is NotiZen Pro free?

NotiZen Pro costs $10.49, and also offers in-app purchases.

### Is dB Meter free?

dB Meter costs $12.99, with no in-app purchases.

### Do NotiZen Pro or dB Meter have ads?

Neither NotiZen Pro nor dB Meter shows ads.

### Which is updated more often, NotiZen Pro or dB Meter?

NotiZen Pro ships an update monthly, and dB Meter monthly. Most recently, NotiZen Pro was updated on October 11, 2026 and dB Meter on October 5, 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.*