Comparison

HD AV SYNC + CAMERA CHIP CHART vs ROAST APP

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

Head to head
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

About

ROAST APP

Get instant, humorous AI-generated roasts for your photos. Upload a picture and discover what the AI thinks, guaranteed to bring laughter and amusement. Perfect for sharing funny reactions with friends.

Highlights
  • AI photo analysis
  • Instant roasts
  • Humorous critiques
  • Photo sharing
  • Amusing content
Features
Read full description

Instantly find out what AI has to say about your crazy cat or that weird selfie! These roasts are bound to leave you roaring with delight. — Terms: www.roastapp.ai/terms

Screenshots

HD AV SYNC + CAMERA CHIP CHART4 screens
ROAST APP2 screens

Verdict

The call

The clearest difference is review sentiment: ROAST APP at 52% against HD AV SYNC + CAMERA CHIP CHART's 0%. ROAST APP also leads on price (Free vs $4.99) and rating (4.8 vs 1.0). HD AV SYNC + CAMERA CHIP CHART's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 15.0). On ads 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

ROAST APP is free to download; HD AV SYNC + CAMERA CHIP CHART costs $4.99 up front. ROAST APP sells 2 in-app purchases, starting at $4.99 per 7 days. HD AV SYNC + CAMERA CHIP CHART asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ROAST APP holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: ROAST APP has 666 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of HD AV SYNC + CAMERA CHIP CHART's written reviews are positive against 52% of ROAST APP's.

UpkeepUpdate frequency

HD AV SYNC + CAMERA CHIP CHART ships an update every 71 months, ROAST APP every 6 weeks. The most recent releases landed on September 30, 2026 and October 9, 2026 respectively.

Scorecard8 real differences · 2 level
HD AV SYNC + CAMERA CHIP CHART versus ROAST APP: the parameters behind the verdict, then further details
ParameterHD AV SYNC + CAMERA CHIP CHARTROAST APP
Price$4.99Free — better
Rating1.0 (1 ratings)4.8 (666 ratings) — better
Positive reviews0.0% of reviews51.6% of reviews — better
Number of ratings1666 — better
Update frequencyEvery 71 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size25 MB22 MB
Age rating17+17+
DeveloperJohn AvatarNEXT LEVEL LLC

Customer experience

HD AV SYNC + CAMERA CHIP CHART

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

ROAST APP

All ratings666 ratings
Positive96.2%
Neutral0.8%
Negative3.0%
Written reviews31 reviews
Positive51.6%
Neutral3.2%
Negative45.2%

Bugs and requests

HD AV SYNC + CAMERA CHIP CHART

Not enough reviews yet to summarise bugs or requests.

ROAST APP

Reported bugs

3 issues
  • Login issues
  • Crashes after limited usage
  • Incompatibility with certain devices

Requested features

3 requests
  • Free trial period
  • More free roast opportunities
  • Improved accuracy of roasts

In-app purchases

None

HD AV SYNC + CAMERA CHIP CHART

No in-app purchases

2 purchases

ROAST APP

Subscriptions2
  • INFINITE ROASTS$4.997 Days
  • INFINITE ROASTS3 Days trial$4.997 Days

Questions

Is HD AV SYNC + CAMERA CHIP CHART free?
HD AV SYNC + CAMERA CHIP CHART costs $4.99, with no in-app purchases.
Is ROAST APP free?
ROAST APP is free to download, with in-app purchases available.
Which has better reviews, HD AV SYNC + CAMERA CHIP CHART or ROAST APP?
ROAST APP is rated higher. HD AV SYNC + CAMERA CHIP CHART averages 1.0 out of 5 from 1 ratings, while ROAST APP averages 4.8 from 666 ratings.
Do HD AV SYNC + CAMERA CHIP CHART or ROAST APP have ads?
Neither HD AV SYNC + CAMERA CHIP CHART nor ROAST APP shows ads.
Which is updated more often, HD AV SYNC + CAMERA CHIP CHART or ROAST APP?
HD AV SYNC + CAMERA CHIP CHART ships an update every 71 months, and ROAST APP every 6 weeks. Most recently, HD AV SYNC + CAMERA CHIP CHART was updated on September 30, 2026 and ROAST APP on October 9, 2026.

Other comparisons