# Decibel Reader vs Data Save

The clearest difference is in-app purchases: Data Save at none against Decibel Reader's 6. Data Save also leads on ads (none vs shown) and update cadence (every 3 days vs every 2 weeks). On price and device support there is nothing between them.

Both are free to download. Decibel Reader sells 6 in-app purchases, starting at $3.99 per 7 days. Data Save asks for nothing beyond the download.

Decibel Reader ships an update every 2 weeks, Data Save every 3 days. The most recent releases landed on October 5, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Decibel Reader | Data Save |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (24 ratings)](https://appshunter.io/ios/app/decibel-reader/id6451411046/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 1 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andy Sutanto](https://appshunter.io/developer/1659282966) | [Cal Zanconato](https://appshunter.io/developer/1736608366) |

## What reviewers say

### Decibel Reader

[App page](https://appshunter.io/ios/app/decibel-reader/id6451411046)

Measure ambient noise levels with real-time readings, tracking minimum, average, and maximum decibels. Offers calibration for accuracy and a dark mode for comfortable viewing. This tool helps you understand your sound environment.

**Highlights:** Real-time decibel measurement, Calibration for accuracy, Track min, average, and max noise levels, Dark mode for low-light use, Simple and intuitive interface

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decibel Meter Pro - 1 Week | $3.99 | per 7 days |
| Decibel Meter Pro - 1 Month | $7.99 | per month |
| Sound Level Meter - 6 Months | $19.99 | per 6 months |
| Noise Level Meter - 1 Year | $29.99 | per year |
| Decibel Meter Pro - 1Y 2 | $29.99 | per year |
| dB Meter Pro | $49.99 | one-time |


### Data Save

[App page](https://appshunter.io/ios/app/data-save/id6479618313)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Reader free?

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

### Is Data Save free?

Data Save is free to download, with no in-app purchases.

### Do Decibel Reader or Data Save have ads?

Decibel Reader shows ads; Data Save does not.

### Which is updated more often, Decibel Reader or Data Save?

Decibel Reader ships an update every 2 weeks, and Data Save every 3 days. Most recently, Decibel Reader was updated on October 5, 2026 and Data Save on September 29, 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.*