Comparison

Surround Speaker Check vs UnitBloom

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Surround Speaker Check

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
Read full description

Surround Speaker Check is a fun and entertaining utility to help you set up and enjoy Dolby Atmos on your home theater gear! Also works as great way to test spatial audio on Dolby Atmos-compatible sound bars and headphones! Surround Speaker Check is more than just the world’s most popular AV utility app - with over 2 hours of content, it’s now THE best way to experience Dolby Atmos spatial audio like you’ve never heard before! SURROUND SOUND TESTING - Verify your system is properly decoding Dolby Atmos surround sound audio - Confirm your speakers are properly configured - Hear and evaluate your surround speakers in isolation (including height channels) - Tune your room, test your sub with the new Subwoofer Test Suite - Use the Manual Speaker Check feature to help troubleshoot and fine-tune your system - Confirm your Apple TV is properly set-up for surround sound playback DOLBY ATMOS TEST TRACKS - True Dolby Atmos audio support provides an accurate and complete test environment - Supports up to 7.1.4 speaker layouts - Works with Atmos-compatible soundbars SPATIAL AUDIO PLAYGROUND - Over two hours of spatial audio demos and Dolby Atmos test tracks - Regularly updated Dolby Atmos demos experimental spatial audio content - Enjoy spatial object scenes designed to unleash the full potential of your home theater Uses specially-produced Dolby Atmos surround tracks with on-screen 3D graphics Designed by guitarist and immersive audio producer Jeff Perrin as a means to confirm the integrity of various surround systems while producing surround sound music tracks. NOTE: Playback of test content on speakers requires an Apple TV (or similar AirPlay-compatible streaming device) connected to a Dolby Digital-compatible home theater system. Spatial audio support over headphones requires compatible iOS device with Dolby Atmos-compatible AirPods or Dolby Atmos-compatible headphones. When played back over an optical connection or non-Atmos devices, surround content will fold down to Dolby Digital 5.1 or stereo 2.0 format, depending on device capabilities. In all cases, a fast internet connection is highly recommend. *Playback of Dolby Atmos content on non-Apple devices requires that the device supports multichannel audio (ie. Dolby Digital 5.1 or Atmos) over AirPlay 2. Please check your device specifications. Please try out the free included test tracks so as to ensure compatibility with your hardware before making any purchases. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

UnitBloom

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
Read full description

UnitBloom is a beautifully designed, fast, and intuitive unit converter built for everyday calculations. Whether you're converting Fahrenheit to Celsius, pounds to kilograms, or miles to kilometers, UnitBloom delivers instant and accurate results with a clean, distraction-free interface. Key Features: • Convert length, weight, temperature, area, volume, time, and data • Instant real-time calculation • Supports negative values (temperature) • Clean gradient design with smooth interactions • English and Chinese language support • Automatically follows system language • Lightweight and easy to use Designed for simplicity and clarity, UnitBloom focuses on speed and usability without unnecessary complexity. Perfect for students, travelers, engineers, and anyone who needs quick unit conversions. No ads. No tracking. Just fast conversion.

Screenshots

Surround Speaker Check4 screens
UnitBloom3 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Surround Speaker Check versus UnitBloom: the parameters behind the verdict, then further details
ParameterSurround Speaker CheckUnitBloom
PriceFreeFree
Rating3.8 (41 ratings)5.0 (1 ratings) — better
Positive reviews54.3% of reviews—
Number of ratings41 — better1
Update frequencyEvery 5 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, Apple TV — betteriPhone, iPad
Requires iOS16.616.6
Further details — not scored
Size180 MB3 MB
Age rating4+4+
DeveloperJeff Perrin Music LLCRePrice LLC

In-app purchases

4 purchases

Surround Speaker Check

Subscriptions2
  • Unlimited Access$19.991 Year
  • Unlimited Access$24.991 Year
One-time2
  • Subwoofer Check$0.99
  • Center Speaker Check$0.99
None

UnitBloom

No in-app purchases

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.

Other comparisons