# Decibel meter vs Spider mini

The clearest difference is price: Decibel meter at Free against Spider mini's $1.99. Decibel meter also leads on iOS requirement (14.0 vs 17.0). Spider mini's advantage is in-app purchases (none vs 3) and ads (none vs shown). On device support there is nothing between them.

Decibel meter is free to download; Spider mini costs $1.99 up front. Decibel meter sells 3 in-app purchases, starting at $1.99 per 7 days. Spider mini asks for nothing beyond the download.

Decibel meter ships an update every 2 months, Spider mini every 9 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Decibel meter | Spider mini |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/decibel-meter-db-meter-noise/id1673352003/reviews)** | — |
| Number of ratings | **8** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 41 MB | 2 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 17+ |
| Developer | [Alexandr Zelensky](https://appshunter.io/developer/1540163645) | [Kai Luo](https://appshunter.io/developer/344176636) |

## What reviewers say

### Decibel meter

[App page](https://appshunter.io/ios/app/decibel-meter-db-meter-noise/id1673352003)

Measure sound levels in your environment with this easy-to-use noise meter. Get accurate decibel readings, view real-time graphs, and track maximum sound levels. Ideal for concerts, restaurants, homes, and workplaces.

**Highlights:** Accurate decibel measurement, Real-time sound level graph, Maximum recorded sound level display, Easy-to-read interface, SPL meter functionality, Noise assessment tool

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| dB Meter Premium | $1.99 | per 7 days |
| dB Meter Premium | $4.99 | per month |
| Special Offer - 50% Discount | $19.99 | per year |


### Spider mini

[App page](https://appshunter.io/ios/app/spider-mini/id6451081819)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Decibel meter free?

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

### Is Spider mini free?

Spider mini costs $1.99, with no in-app purchases.

### Do Decibel meter or Spider mini have ads?

Decibel meter shows ads; Spider mini does not.

### Which is updated more often, Decibel meter or Spider mini?

Decibel meter ships an update every 2 months, and Spider mini every 9 days. Most recently, Decibel meter was updated on October 30, 2026 and Spider mini on October 25, 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.*