Comparison

RiffTrax Sync vs Coax

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

Head to head
About

RiffTrax Sync

This app synchronizes humorous audio commentaries with movies from various sources. It uses your device's microphone to detect the film and automatically aligns the jokes for a comedic viewing experience. Enjoy blockbusters and B-movies with a fresh, funny twist.

Highlights
  • Automatic audio commentary synchronization
  • Movie recognition via device microphone
  • Supports various playback sources (streaming, DVD, Blu-ray)
  • Downloadable commentary tracks
  • Syncs with blockbusters and B-movies
Features
Read full description

From the guys who brought you Mystery Science Theater 3000, RiffTrax makes movies FUNNY! Our hilarious commentaries turn some of the biggest blockbusters (and cheesiest B-movies) into comedy hits. “The RiffTrax app syncs everything up perfectly.” - CNET “Rifftrax app takes the guesswork out of syncing jokes to film. It’s easier than ever to sync MST3K-like commentary. The app uses your device’s microphone to listen for a movie and automatically syncs Rifftrax playback to the film. It’s simple and easy...” - Engadget “The app can recognize movies from Netflix, iTunes, Amazon Video, DVDs, Blu-rays, your TV, computer, and other streams.” - High-Def Digest Using the app, you can download these "riffs" on blockbuster films like Twilight, Jurassic Park, Star Wars and more! The app listens to the movie, using your device's microphone, and automatically synchronizes the commentary to play along with perfect timing. Presto! That movie is now a comedy smash. Check here for our list of compatible RiffTrax titles! www.rifftrax.com/appenabled Get into RiffTrax and start watching movies in a whole new way!

About

Coax

Experience your Plex media library like a traditional cable TV experience. This app automatically generates channels from your existing content, allowing you to randomly discover movies and shows without the pressure of choosing.

Highlights
  • On-device Plex library channel surfing
  • Zero-setup integration
  • Automatic channel guide generation
  • Customizable channel categories (genre, decade, actor, etc.)
  • Create channels from Plex Collections
  • Unify TV and movie libraries
  • Adjustable number of channels
Features
Read full description

Demolish the tyranny of too much choice, say "NO" to BigAlgo, and just Relax with Coax. Within seconds, you'll be flipping through a schedule made entirely of your own home media server content. Jump right in with the on-screen cable guide and watch whatever's on, just like the old days. You can't pause, you can't skip forward, you can't rewind - all you can do is change the channel. Experience the joy of randomly happening upon a great scene in a movie you forgot you had, or a TV show marathon for an old favorite. Coax requires no setup at all - it uses the metadata your media library already has. If you want, you can create your own custom Lineups, with all sorts of simple yet powerful scheduling rules - create a Saturday Morning Cartoons Lineup for your inner (or actual) child, or a Late Night Thrillers Lineup for date night. Important: This app requires a Plex account and access to a Plex Media Server (or Jellyfin, or Emby). Coax does not provide or distribute any media; it only connects to content you already own. How to configure your Lineups: • Coax scans your home media libraries and generates a channel guide based on your content’s metadata. • Select which channel categories you want: Genre, Decade, Recent Additions, Actor, Studio, Director, and Collections. • Create 100% custom channels using Collections. • Unify your libraries to mix TV and movie channels. • Adjust the number of channels you want to generate. •  Customize the time between your programs with Gap Content - play Trailers, or content from another Library if you want! Coax is your personal “cable box” for your own content — no extra accounts, no third-party streaming, just your Plex library organized in a fun, nostalgic way. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

RiffTrax Sync4 screens
Coax4 screens

Verdict

The call

The clearest difference is rating: Coax at 4.2 against RiffTrax Sync's 3.4. Coax also leads on review sentiment (77% vs 40%) and update cadence (weekly vs every 5 months). On price, ratings volume, ads and in-app purchases 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. RiffTrax Sync sells 18 one-off in-app purchases and Coax sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Coax holds the better App Store score, 4.2 against 3.4. Both are backed by a comparable volume of ratings — 122 and 41 respectively. Written reviews point the same way: 40% of RiffTrax Sync's written reviews are positive against 77% of Coax's.

UpkeepUpdate frequency

RiffTrax Sync ships an update every 5 months, Coax weekly. The most recent releases landed on October 17, 2026 and October 14, 2026 respectively.

Scorecard5 real differences · 5 level
RiffTrax Sync versus Coax: the parameters behind the verdict, then further details
ParameterRiffTrax SyncCoax
PriceFreeFree
Rating3.4 (122 ratings)4.2 (41 ratings) — better
Positive reviews40.3% of reviews76.9% of reviews — better
Number of ratings122 — better41
Update frequencyEvery 5 monthsWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, Mac, Apple TV, Vision Pro — better
Requires iOS17.0 — better18.6
Further details — not scored
Size62 MB57 MB
Age rating12+17+
DeveloperRiffTrax, LLCOut to Lunch Productions, LLC

Customer experience

RiffTrax Sync

All ratings122 ratings
Positive59.0%
Neutral6.6%
Negative34.4%
Written reviews72 reviews
Positive40.3%
Neutral12.5%
Negative47.2%

Coax

All ratings41 ratings
Positive80.5%
Neutral0.0%
Negative19.5%
Written reviews26 reviews
Positive76.9%
Neutral3.8%
Negative19.2%

Bugs and requests

RiffTrax Sync

Reported bugs

17 issues
  • Login failed every time
  • Sound or sync issues with titles
  • Mechanism to match film with riff outdated
  • Corrupted riff file
  • Cannot log in
Show 12 more
  • Does not auto sync
  • App stops when phone goes to sleep
  • Does not play through Bluetooth speaker
  • App crashes after iOS update
  • Sync not reliable
  • Cannot play paid content without syncing
  • Sync doesn't work
  • App not working on SE
  • Purchased riffs show as not purchased
  • Sync misses introduction
  • Audio stops during movie
  • App doesn't work with VoiceOver

Requested features

12 requests
  • RiffTrax Friends integration
  • Manual sync option
  • Bluetooth speaker support
  • Apple TV support
  • Downloadable content
Show 7 more
  • Improved sync accuracy
  • Auto-sync after pause
  • Support for Friends membership
  • Dark mode
  • Accessibility improvements for blind users
  • Ability to stream content
  • RiffTrax Friends app

Coax

Not enough reviews yet to summarise bugs or requests.

In-app purchases

18 purchases

RiffTrax Sync

One-time18
  • Harry Potter and the Chamber of Secrets Riff$4.99
  • Harry Potter and the Sorcerers Stone Riff$4.99
  • Jurassic Park Riff$4.99
Show 15 more
  • Lord of the Rings: Fellowship of the Ring Riff$4.99
  • The Room (RiffTrax Live Edition) Riff$4.99
  • Jaws Riff$4.99
  • Twilight Riff$4.99
  • Twilight: Eclipse Riff$4.99
  • Twilight: New Moon Riff$4.99
  • Star Wars Episode I: The Phantom Menace Riff$4.99
  • Star Wars Episode IV: A New Hope Riff$4.99
  • Road House (10th Anniversary Edition) Riff$4.99
  • Star Wars: Episode VII - The Force Awakens Riff$4.99
  • The Twilight Saga: Breaking Dawn - Part 1 parody Riff$4.99
  • Star Wars Episode II: Attack of the Clones Riff$4.99
  • Star Wars Episode III: Revenge of the Sith Riff$4.99
  • Harry Potter and the Prisoner of Azkaban Riff$4.99
  • Independence Day Riff$4.99
3 purchases

Coax

Subscriptions2
  • Monthly - 1st Week Free7 Days trial$2.991 Month
  • Annual - 1st Week Free7 Days trial$29.991 Year
One-time1
  • Lifetime$74.99

Questions

Is RiffTrax Sync free?
RiffTrax Sync is free to download, with in-app purchases available.
Is Coax free?
Coax is free to download, with in-app purchases available.
Which has better reviews, RiffTrax Sync or Coax?
Coax is rated higher. RiffTrax Sync averages 3.4 out of 5 from 122 ratings, while Coax averages 4.2 from 41 ratings.
Do RiffTrax Sync or Coax have ads?
Neither RiffTrax Sync nor Coax shows ads.
Which is updated more often, RiffTrax Sync or Coax?
RiffTrax Sync ships an update every 5 months, and Coax weekly. Most recently, RiffTrax Sync was updated on October 17, 2026 and Coax on October 14, 2026.

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