Comparison

Surround Speaker Check vs Tempus World Clock

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

Tempus World Clock

Easily track multiple time zones with customizable clocks for people and places. Convert times instantly, find optimal meeting slots across different regions, and view city details including weather and sunrise/sunset.

Highlights
  • Customizable clocks with names and colors
  • Instant time conversion across zones
  • Meeting time finder with working hours
  • City detail view with weather and sunrise/sunset
  • Apple Watch app and complications
  • Home Screen widgets
  • iCloud sync across devices
Features
Read full description

Tempus is a world clock and time zone converter built for people who work, travel, and stay in touch across time zones. It is at home on iPhone, iPad, and Apple Watch. NAME YOUR CLOCKS Add clocks for cities or for the people you talk to. Give each one a custom name, an emoji, and a color tag so "Mum in Sydney" or "Design team, Berlin" is readable at a glance. Choose emoji from a searchable catalog with recents and suggestions for the city. Pick analog or digital faces, 12 or 24 hour time, and see the time difference from wherever you are. CONVERT TIMES INSTANTLY Pick any time in any zone and see it in all your clocks at once. Drag the time scrubber to slide through the day and watch every clock move together. Day and night indicators follow the working hours you set for each city, so you can see at a glance who is reachable. PROFILES Group your clocks into profiles such as Work or Family and switch between them from the title on iPhone or the sidebar on iPad. A city can be in several profiles, and the active profile syncs to your other devices and Apple Watch. REMINDERS IN ANOTHER CITY'S TIME Set a reminder for 9:00 in Tokyo and Tempus alerts you when it is 9:00 there, whatever time it is where you are. Anchor a reminder to the city or to your own time, repeat it every day or on the weekdays you choose, or set it for a single date. Label it, pause it without deleting it, and turn alerts off on a device you would rather keep quiet. ON THE LOCK SCREEN Keep a reference city in the Dynamic Island and on the Lock Screen, with its current time and how far ahead or behind you it is. A countdown appears there before a reminder is due. FIND A MEETING TIME THAT WORKS Select two or more clocks, set working hours for each, and Tempus shows the overlapping windows where everyone is available. Add the meeting to your calendar in one tap or share it as an .ics invite. CITY DETAIL Tap any clock for a full city view: a skyline illustration that changes with the time of day, sunrise and sunset on a daylight arc, and current weather conditions. IPAD On iPad, Tempus uses a native split layout: browse your clocks in a sidebar while City Detail stays open beside them. Time Converter and Meeting Finder open in the detail column with room for a full-width overlap timeline. Keyboard shortcuts and pointer hover are supported throughout. APPLE WATCH Tempus on Apple Watch shows your clocks on your wrist, lets you convert times with the Digital Crown, and offers complications for your favorite clocks. Clocks sync instantly between iPhone and Apple Watch. WIDGETS AND SYNC Home Screen widgets keep your clocks in view. Your clocks sync across all your devices with iCloud. PRIVACY FIRST Tempus has no account, no ads, and no tracking. Your clocks are stored on your device and in your private iCloud database. Weather is provided by Apple Weather for the cities you add, never for your own location.

Screenshots

Surround Speaker Check4 screens
Tempus World Clock4 screens

Verdict

The call

The clearest difference is review sentiment: Tempus World Clock at 100% against Surround Speaker Check's 54%. Tempus World Clock also leads on rating (5.0 vs 3.8) and in-app purchases (none vs 4). Surround Speaker Check's advantage is price (Free vs $1.99) and ratings volume (41 vs 1). On 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

Surround Speaker Check is free to download; Tempus World Clock costs $1.99 up front. Surround Speaker Check sells 4 in-app purchases, starting at $19.99 per year. Tempus World Clock asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Tempus World Clock 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. Written reviews point the same way: 54% of Surround Speaker Check's written reviews are positive against 100% of Tempus World Clock's.

UpkeepUpdate frequency

Surround Speaker Check ships an update every 5 months, Tempus World Clock every 10 days. Both last shipped on October 24, 2026.

Scorecard7 real differences · 3 level
Surround Speaker Check versus Tempus World Clock: the parameters behind the verdict, then further details
ParameterSurround Speaker CheckTempus World Clock
PriceFree — better$1.99
Rating3.8 (41 ratings)5.0 (1 ratings) — better
Positive reviews54.3% of reviews100.0% of reviews — better
Number of ratings41 — better1
Update frequencyEvery 5 monthsEvery 10 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, Apple TViPhone, iPad, Apple Watch
Requires iOS16.6 — better17.0
Further details — not scored
Size180 MB61 MB
Age rating4+4+
DeveloperJeff Perrin Music LLCViktor Gamov

Customer experience

Surround Speaker Check

All ratings41 ratings
Positive65.9%
Neutral9.8%
Negative24.4%
Written reviews35 reviews
Positive54.3%
Neutral11.4%
Negative34.3%

Tempus World Clock

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

Tempus World Clock

No in-app purchases

Questions

Is Surround Speaker Check free?
Surround Speaker Check is free to download, with in-app purchases available.
Is Tempus World Clock free?
Tempus World Clock costs $1.99, with no in-app purchases.
Which has better reviews, Surround Speaker Check or Tempus World Clock?
Tempus World Clock is rated higher. Surround Speaker Check averages 3.8 out of 5 from 41 ratings, while Tempus World Clock averages 5.0 from 1 ratings.
Do Surround Speaker Check or Tempus World Clock have ads?
Neither Surround Speaker Check nor Tempus World Clock shows ads.
Which is updated more often, Surround Speaker Check or Tempus World Clock?
Surround Speaker Check ships an update every 5 months, and Tempus World Clock every 10 days. Most recently, Surround Speaker Check was updated on October 24, 2026 and Tempus World Clock on October 24, 2026.

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