# Decibel Meter Plus Pro vs RRRemember

The clearest difference is review sentiment: RRRemember at 100% against Decibel Meter Plus Pro's 52%. RRRemember also leads on price (Free vs $0.99) and update cadence (every 5 days vs every 2 months). Decibel Meter Plus Pro's advantage is iOS requirement (15.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

RRRemember is free to download; Decibel Meter Plus Pro costs $0.99 up front. Decibel Meter Plus Pro sells 1 one-off in-app purchase and RRRemember sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Decibel Meter Plus Pro ships an update every 2 months, RRRemember every 5 days. The most recent releases landed on September 26, 2026 and August 12, 2026 respectively.

## The numbers

| Metric | Decibel Meter Plus Pro | RRRemember |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[3.8 (80 ratings)](https://appshunter.io/ios/app/decibel-meter-plus-pro/id645214476/reviews)** | — |
| Number of ratings | **80** | — |
| Positive reviews | 52.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 12 MB | 33 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [华芳 张](https://appshunter.io/developer/586041482) | [洪跃 管](https://appshunter.io/developer/1363417345) |

## 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 | $2.99 | one-time |


### RRRemember

[App page](https://appshunter.io/ios/app/rrremember/id6479942350)

Record important days with a simple design and delicate experience. Track past days or days remaining with a simulated paper flipping effect. Decorate entries with theme icons and use widgets for quick access.

**Highlights:** Record important days, Track days passed or remaining, Simulated paper flipping experience, Theme icons for decoration, Widgets and standby components, Timeline function

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Storage | $0.99 | one-time |
| All Themes and Icons | $1.99 | one-time |
| One-time Purchase | $2.99 | one-time |
| All Widget Functions | $2.99 | one-time |


## Frequently asked questions

### Is Decibel Meter Plus Pro free?

Decibel Meter Plus Pro costs $0.99, and also offers in-app purchases.

### Is RRRemember free?

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

### Do Decibel Meter Plus Pro or RRRemember have ads?

Neither Decibel Meter Plus Pro nor RRRemember shows ads.

### Which is updated more often, Decibel Meter Plus Pro or RRRemember?

Decibel Meter Plus Pro ships an update every 2 months, and RRRemember every 5 days. Most recently, Decibel Meter Plus Pro was updated on September 26, 2026 and RRRemember on August 12, 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.*