# Surround Speaker Check vs UnitBloom

The clearest difference is rating: UnitBloom at 5.0 against Surround Speaker Check's 3.8. UnitBloom also leads on in-app purchases (none vs 4) and update cadence (weekly vs every 5 months). Surround Speaker Check's advantage is ratings volume (41 vs 1). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Surround Speaker Check sells 4 in-app purchases, starting at $19.99 per year. UnitBloom asks for nothing beyond the download.

UnitBloom holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Surround Speaker Check has 41 ratings behind it against 1, so its average is the more settled of the two.

Surround Speaker Check ships an update every 5 months, UnitBloom weekly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Surround Speaker Check | UnitBloom |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (41 ratings)](https://appshunter.io/ios/app/surround-speaker-check/id1052439918/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/unitbloom/id6759544493/reviews)** |
| Number of ratings | **41** | 1 |
| Positive reviews | 54.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 180 MB | 3 MB |
| Requires iOS | 16.6 | 16.6 |
| Devices | **iPhone, iPad, Apple TV** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jeff Perrin Music LLC](https://appshunter.io/developer/888835926) | [RePrice LLC](https://appshunter.io/developer/1857807938) |

## What reviewers say

### Surround Speaker Check

[App page](https://appshunter.io/ios/app/surround-speaker-check/id1052439918)

Test and optimize your Dolby Atmos home theater system. This app provides over two hours of spatial audio content to verify surround sound decoding, speaker configuration, and enjoy immersive audio experiences on compatible soundbars and headphones.

**Highlights:** Verify Dolby Atmos decoding, Test speaker configuration, Evaluate height channels, Subwoofer test suite, Manual speaker troubleshooting, Spatial audio demos, Dolby Atmos test tracks

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access | $19.99 | per year |
| Unlimited Access | $24.99 | per year |
| Subwoofer Check | $0.99 | one-time |
| Center Speaker Check | $0.99 | one-time |


### UnitBloom

[App page](https://appshunter.io/ios/app/unitbloom/id6759544493)

This app offers fast and accurate unit conversions for everyday calculations. It supports a wide range of units including length, weight, temperature, and data, with a clean and intuitive interface. Designed for simplicity and speed, it's ideal for anyone needing quick conversions.

**Highlights:** Convert length, weight, temperature, area, volume, time, and data, Instant real-time calculation, Supports negative values, Clean gradient design, English and Chinese language support, Lightweight and easy to use

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Surround Speaker Check free?

Surround Speaker Check is free to download, with in-app purchases available.

### Is UnitBloom free?

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

### Which has better reviews, Surround Speaker Check or UnitBloom?

UnitBloom is rated higher. Surround Speaker Check averages 3.8 out of 5 from 41 ratings, while UnitBloom averages 5.0 from 1 ratings.

### Do Surround Speaker Check or UnitBloom have ads?

Neither Surround Speaker Check nor UnitBloom shows ads.

### Which is updated more often, Surround Speaker Check or UnitBloom?

Surround Speaker Check ships an update every 5 months, and UnitBloom weekly. Most recently, Surround Speaker Check was updated on November 2, 2026 and UnitBloom on October 31, 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.*