# SpeakerPro vs Decibels

The clearest difference is price: Decibels at Free against SpeakerPro's $2.99. SpeakerPro's advantage is in-app purchases (none vs 1) and iOS requirement (7.0 vs 18.0). On update cadence, ads and device support there is nothing between them.

Decibels is free to download; SpeakerPro costs $2.99 up front. Decibels sells 1 one-off in-app purchase. SpeakerPro asks for nothing beyond the download.

SpeakerPro ships an update every 3 months, Decibels every 5 months. The most recent releases landed on October 7, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | SpeakerPro | Decibels |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[1.0 (4 ratings)](https://appshunter.io/ios/app/speakerpro/id1061631115/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Monetization | Paid | — |
| Size | 4 MB | 6 MB |
| Requires iOS | **7.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AudioAppsStore](https://appshunter.io/developer/549033691) | [Merano Studio Limited](https://appshunter.io/developer/1783493234) |

## What reviewers say

### SpeakerPro

[App page](https://appshunter.io/ios/app/speakerpro/id1061631115)

Precisely measure speaker distances and toe-in angles using your iPhone or iPad. Ideal for audio enthusiasts and professionals, this app offers intuitive guidance for optimizing your sound system's layout. It works offline and provides accurate measurements within fractions of an inch.

**Highlights:** Precise speaker distance measurement, Intelligent toe-in angle recommendations, Works offline, Accurate to fractions of an inch, Automatic reference calibration, Projects automatically saved

**Features:** macOS Compatibility

**In-app purchases:** none


### Decibels

[App page](https://appshunter.io/ios/app/decibels/id6749821741)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Leave a Tip | $0.99 | one-time |


## Frequently asked questions

### Is SpeakerPro free?

SpeakerPro costs $2.99, with no in-app purchases.

### Is Decibels free?

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

### Do SpeakerPro or Decibels have ads?

Neither SpeakerPro nor Decibels shows ads.

### Which is updated more often, SpeakerPro or Decibels?

SpeakerPro ships an update every 3 months, and Decibels every 5 months. Most recently, SpeakerPro was updated on October 7, 2026 and Decibels on October 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*