Comparison

The Ultimate Buzzer Pro vs HD AV SYNC + CAMERA CHIP CHART

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

Head to head
About

The Ultimate Buzzer Pro

Transform your device into a versatile noise machine with a vast collection of sound effects. Perfect for pranks, games, or adding a dramatic flair to any situation. Enjoy a distraction-free experience with exclusive sounds and no advertisements.

Highlights
  • Over 60 high-quality sound effects
  • Big Button Mode for full-screen interaction
  • Integrated flashlight utility
  • Dark Mode for comfortable viewing
  • Ad-free experience
  • Exclusive bonus sounds
Features
Read full description

Turn your device into the ultimate noise machine! Whether you need a buzzer for family trivia night, want to prank your friends with an air horn, or just need to break the silence, The Ultimate Buzzer Pro is the only app you need with even more sounds than the free version. Join millions of users who trust us for their daily dose of noise. KEY FEATURES: - Massive Library: Over 60 high-quality sounds including Sirens, Alarms, Animals, and Cartoon effects. - Big Button Mode: Turn your entire screen into one giant red button. Perfect for game shows or blind tapping! - Flashlight Utility: Toggle your camera's LED light directly from the app. - Dark Mode: A sleek look that’s easy on the eyes. POPULAR SOUNDS INCLUDE: Air Horn & Sirens (Prank your friends!) Game Show Buzzers (Correct/Wrong answers) Rimshot (For dad jokes) ...and dozens more! The Pro version removes ads and unlock exclusive bonus sounds. Keep the fun going without interruptions! Disclaimer: The developer is not responsible for any pranks gone wrong!

About

HD AV SYNC + CAMERA CHIP CHART

This app generates test patterns and audio tones to help synchronize video and audio for various production and playback systems. It assists in correcting sync issues for cameras, editing software, live events, and home theaters.

Highlights
  • Audio delay adjustment for sync
  • Generates video/audio files for editing systems
  • Supports live event synchronization
  • Includes camera chip chart generator
  • Custom web browser with AV info
  • Continuous loop test pattern
Features
Read full description

HD AV SYNC TEST & CAMERA CHIP CHART GENERATOR (YOUTUBE, TIKTOK, All Video & Live Formats, SD, HD, 360...) When doing YouTube, Film & TV Production... don't you hate it when your audio is way out of sync with your picture!?? Or your Digital Cinema, or Big Live Music Stage Show, Home Theatre is out of sync!?!?!? What about bad focus, chroma, luminance...? This App helps you fix ALL of that!:^). Includes a VERY Detailed User Guide and Embedded Quicktime Movie Files. Just Aim your HD or SD Cameras and Mics at your Apple iDevice and adjust audio delay for sync! Simple & Quick. OR, copy the included HD video/audio files (iTunes File Sharing) to sync your Edit System (FCP, Avid, Premiere, Pro Tools, Edius, iMovie...) to Client monitors! Also can be used for live events to sync the stage to the back of the stadium, or in major motion picture theatres to your home theatre!:^) FOR - iPad, iPhone and iPod Touch & ANY Computer (Mac, PC, Linux, UNIX...)!:^). ALSO for Playout Servers for Broadcast. From JOHNAVATAR.com (The included Movie Files work on ANY Mac, PC, Linux, any system.) For Critical Professionals, where Sound and Picture MUST BE IN SYNC! This is a must have APP. ESSENTIAL FOR…. 1) HD, SD, Film & 360 Camera systems – (including Digital SLR… 5D, RED and etc.) used in Production, for example HD Studio's, where HD Video is captured separately from sound (TV Production, for example), or on a major feature film…. 2) Picture & Sound Edit Systems - Adobe Premiere Pro, Avid MediaComposer, Final Cut Pro all versions, EDIUS, ProTools, Logic… even iMovie and MicroSoft MovieMaker… all of them), 3) Graphics Systems, like After Effects, Maya, Cinema4D… all of them, to test to be sure you are in AV Sync, 4) Home Theatres, Digital Cinema's, Theatres… anywhere where you are concerned about Motion Picture and Sound Sync... 5) LIVE EVENTS – where you want to check Visual and Sound Sync from the stage to the back of the arena… 6) AND ALSO for WEB and MOBILE, where you want to be sure that what you upload, is actually in AV Sync!:^) (Check your YouTube Videos for proper sync.) 7) VR Headsets - Test to make sure your VR is in sync!!!!:^) (Oculus Rift, Google Cardboard, MicroSoft HoloLens, ZEIS VR ONE, ZEIS Cinemizer, Playstation, ….) 8) Camera Chip Charts is included as a link, perfect for calibrating you camera (studio to consumer). OPERATION - Start up this APP, touch the RED ROUND Play Button on the Main / Web Screen and a non-stop, continuous loop of one (1) second of bars and tones plays, cut by one (1) second of black and silence plays 10 times, then repeats, until you TAP on screen and then TAP on X top left, or SWIPE DOWN to stop. There is a custom Web Browser as part of this APP, that includes LINKS to more AV Info, more AV Synce Movies, Chip Charts with explanation. This APP and the included ZIP file containing 8 Quicktime movie files (NTSC, PAL...), are used to set Video and Audio Sync on your Camera and Edit systems… also your Graphics systems, Digital Cinema theaters…. hundreds of uses, professional to consumer… including for WEB and MOBILE! Copy this APP's, ZIP File found in the iTunes "Apps", "File Sharing" window, to your edit, or graphics system, or any other system, for playback on those systems to check AV Sync, to your client monitor, you home theatre... whatever. The ZIP file contains 8 QuickTime Movie files (NTSC, PAL...) for HD projects (HDV codec) that work on any system, Mac, PC, Linux and etc. There also is an H264 file for use on UHD/HD TV's (for example) to major cinemas, using a USB Drive to playback from. CUSTOM WEB BROWSER INCLUDED – This APP also contains a complete, custom Web Browser with links to Google, YouTube and to WikiPedia and explanations of what AV Sync is all about and many other video/audio sync movies. If you have any questions, suggestions, or any comments at all, please email us. Sincerely, JOHNAVATAR.com Silicon Beach, CA 90402 USA Email: JohnAvatar@JohnAvatar.com

Screenshots

The Ultimate Buzzer Pro3 screens
HD AV SYNC + CAMERA CHIP CHART4 screens

Verdict

The call

The clearest difference is review sentiment: The Ultimate Buzzer Pro at 55% against HD AV SYNC + CAMERA CHIP CHART's 0%. The Ultimate Buzzer Pro also leads on rating (4.5 vs 1.0) and update cadence (every 2 months vs every 71 months). HD AV SYNC + CAMERA CHIP CHART's advantage is iOS requirement (12.0 vs 18.0). On ads, in-app purchases and device support 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

The Ultimate Buzzer Pro costs $1.99 and HD AV SYNC + CAMERA CHIP CHART $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

The Ultimate Buzzer Pro holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: The Ultimate Buzzer Pro has 1.2K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 55% of The Ultimate Buzzer Pro's written reviews are positive against 0% of HD AV SYNC + CAMERA CHIP CHART's.

UpkeepUpdate frequency

The Ultimate Buzzer Pro ships an update every 2 months, HD AV SYNC + CAMERA CHIP CHART every 71 months. The most recent releases landed on October 15, 2026 and September 30, 2026 respectively.

Scorecard8 real differences · 3 level
The Ultimate Buzzer Pro versus HD AV SYNC + CAMERA CHIP CHART: the parameters behind the verdict, then further details
ParameterThe Ultimate Buzzer ProHD AV SYNC + CAMERA CHIP CHART
Price$1.99 — better$4.99
Rating4.5 (1.2K ratings) — better1.0 (1 ratings)
Positive reviews54.5% of reviews — better0.0% of reviews
Number of ratings1.2K — better1
Update frequencyEvery 2 months — betterEvery 71 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchases — betterPaid
Best chart rank#36 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.012.0 — better
Further details — not scored
Size111 MB25 MB
Age rating4+17+
DeveloperMakens Apps, LLCJohn Avatar

Customer experience

The Ultimate Buzzer Pro

All ratings1,174 ratings
Positive87.9%
Neutral6.0%
Negative6.0%
Written reviews44 reviews
Positive54.5%
Neutral15.9%
Negative29.5%

HD AV SYNC + CAMERA CHIP CHART

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews5 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

The Ultimate Buzzer Pro

No in-app purchases

None

HD AV SYNC + CAMERA CHIP CHART

No in-app purchases

Questions

Is The Ultimate Buzzer Pro free?
The Ultimate Buzzer Pro costs $1.99, with no in-app purchases.
Is HD AV SYNC + CAMERA CHIP CHART free?
HD AV SYNC + CAMERA CHIP CHART costs $4.99, with no in-app purchases.
Which has better reviews, The Ultimate Buzzer Pro or HD AV SYNC + CAMERA CHIP CHART?
The Ultimate Buzzer Pro is rated higher. The Ultimate Buzzer Pro averages 4.5 out of 5 from 1.2K ratings, while HD AV SYNC + CAMERA CHIP CHART averages 1.0 from 1 ratings.
Do The Ultimate Buzzer Pro or HD AV SYNC + CAMERA CHIP CHART have ads?
Neither The Ultimate Buzzer Pro nor HD AV SYNC + CAMERA CHIP CHART shows ads.
Which is updated more often, The Ultimate Buzzer Pro or HD AV SYNC + CAMERA CHIP CHART?
The Ultimate Buzzer Pro ships an update every 2 months, and HD AV SYNC + CAMERA CHIP CHART every 71 months. Most recently, The Ultimate Buzzer Pro was updated on October 15, 2026 and HD AV SYNC + CAMERA CHIP CHART on September 30, 2026.

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