# Decibel Meter Plus Pro vs Postage Stamp Camera

The clearest difference is monetization model: Decibel Meter Plus Pro at paid against Postage Stamp Camera's subscription. Decibel Meter Plus Pro also leads on ratings volume (81 vs 15) and device support (3 vs 1). Postage Stamp Camera's advantage is rating (4.0 vs 3.8). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Decibel Meter Plus Pro sells 1 one-off in-app purchase and Postage Stamp Camera sells 5 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Postage Stamp Camera holds the better App Store score, 4.0 against 3.8. That said, the two scores are not equally well evidenced: Decibel Meter Plus Pro has 81 ratings behind it against 15, so its average is the more settled of the two. Written reviews complicate that: 53% of Decibel Meter Plus Pro's written reviews are positive against 50% of Postage Stamp Camera's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on November 6, 2026.

## The numbers

| Metric | Decibel Meter Plus Pro | Postage Stamp Camera |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (81 ratings)](https://appshunter.io/ios/app/decibel-meter-plus-pro/id645214476/reviews) | **[4.0 (15 ratings)](https://appshunter.io/ios/app/postage-stamp-camera-stampout/id6791968686/reviews)** |
| Number of ratings | **81** | 15 |
| Positive reviews | **52.8% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Paid** | Subscription |
| Size | 12 MB | 125 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [华芳 张](https://appshunter.io/developer/586041482) | [Essam Harous](https://appshunter.io/developer/1769831339) |

## What reviewers say

### Decibel Meter Plus Pro

[App page](https://appshunter.io/ios/app/decibel-meter-plus-pro/id645214476)

Measure the sound levels around you with this utility app. It displays average, peak, and max values, offers decibel exposure time guidelines, and provides information on noise-induced hearing loss. The app also allows data recording and export for analysis.

**Highlights:** Measure sound levels, Display average, peak, and max values, Decibel exposure time guidelines, Information on noise-induced hearing loss, Record and export data, Calibrate measurements, Universal app support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Reports | $0.99 | one-time |


### Postage Stamp Camera

[App page](https://appshunter.io/ios/app/postage-stamp-camera-stampout/id6791968686)

Transform photos and videos into unique postage stamps with authentic perforated edges. Create a personal collection, add captions, and organize memories in various visual layouts. This app offers a private, offline-first experience for journaling your moments.

**Highlights:** Create stamps from camera, photos, and video frames, Authentic perforated and serrated stamp edges, Classic and full-bleed stamp styles, Add titles, captions, and postmark dates, Calendar, Cards, and Gravity collection views, Save and share stamps as images, Private, offline-first experience

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StampOut Weekly | $4.99 | per 7 days |
| StampOut yearly | $39.99 | per year |
| 100 coins | $9.99 | one-time |
| 200coins | $14.99 | one-time |
| stampout lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Decibel Meter Plus Pro free?

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

### Is Postage Stamp Camera free?

Postage Stamp Camera is free to download, with in-app purchases available.

### Which has better reviews, Decibel Meter Plus Pro or Postage Stamp Camera?

Postage Stamp Camera is rated higher. Decibel Meter Plus Pro averages 3.8 out of 5 from 81 ratings, while Postage Stamp Camera averages 4.0 from 15 ratings.

### Do Decibel Meter Plus Pro or Postage Stamp Camera have ads?

Neither Decibel Meter Plus Pro nor Postage Stamp Camera shows ads.

### Which is updated more often, Decibel Meter Plus Pro or Postage Stamp Camera?

Decibel Meter Plus Pro ships an update every 2 months, and Postage Stamp Camera every 2 months. Most recently, Decibel Meter Plus Pro was updated on November 6, 2026 and Postage Stamp Camera on November 6, 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.*