Jazz91 KCSM vs Groupmuse
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Jazz91 KCSM
Listen to a diverse range of jazz music, including Bop, Cool, Latin, and Blues, 24/7. Enjoy commercial-free broadcasts from the San Francisco Bay Area with excellent sound quality.
- 24/7 jazz broadcasts
- Commercial-free listening
- Diverse jazz genres
- High-quality streaming
- Veteran announcer handpicked music
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KCSM-FM Jazz 91.1 - “The San Francisco Bay Area’s Jazz Station” Bop, Cool, Latin, Mainstream, Blues, Swing, Traditional, World and beyond. Handpicked by veteran announcers from the largest Jazz Radio library in the USA 24 /7/365. Broadcast from the College of San Mateo campus in the San Francisco Bay Area. Featuring our mobile device friendly HE-AACv2 stream for excellent sound quality! Real jazz, all the time and commercial free too!
Groupmuse
Discover and attend intimate live music performances hosted in homes by professional musicians. The app simplifies finding local concerts and organizing your own house shows, bringing music back to its roots.
- Discover local house concerts
- Organize your own concerts
- Find professional musicians
- Intimate live music experiences
- Global concert listings
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Groupmuse is bringing live music back where it began: the living room. We organize intimate house shows with professional musicians, in your neighborhood and around the world. Bring your own drinks, sit on the floor next to a stranger, and dig into timeless music. Our mobile app is the easiest way to find upcoming shows and arrange your own concerts.
Screenshots
Verdict
The clearest difference is rating: Groupmuse at 4.4 against Jazz91 KCSM's 3.5. Groupmuse also leads on ads (none vs shown) and review sentiment (56% vs 43%). On price, ratings volume, update cadence 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Groupmuse holds the better App Store score, 4.4 against 3.5. Both are backed by a comparable volume of ratings — 67 and 25 respectively. Written reviews point the same way: 43% of Jazz91 KCSM's written reviews are positive against 56% of Groupmuse's.
Jazz91 KCSM ships an update every 6 months, Groupmuse every 3 months. Both last shipped on November 1, 2026.
| Parameter | Jazz91 KCSM | Groupmuse |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (67 ratings) | 4.4 (25 ratings) — better |
| Positive reviews | 42.6% of reviews | 55.6% of reviews — better |
| Number of ratings | 67 — better | 25 |
| Update frequency | Every 6 months | Every 3 months — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.2 | 16 — better |
| Further details — not scored | ||
| Size | 12 MB | 15 MB |
| Age rating | 4+ | 17+ |
| Developer | KCSM | Groupmuse |
Customer experience
Jazz91 KCSM
Groupmuse
Bugs and requests
Jazz91 KCSM
Reported bugs
33 issues- Doesn't AirPlay anymore
- Sleep timer needs work
- Drops signal completely at random
- Simply doesn't work
- App doesn't work (blank screen and silence)
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- Shuts off every time the phone locks or the app is minimized
- Ads pop-up almost constantly and stop the music
- App stops playing when screen is dark or app is minimized
- Live stream kept dropping
- Disconnects frequently
- App crashes
- Play/pause button within the app does not work
- App somehow continues playing through phone's speakers after closing and disconnecting Bluetooth
- App keeps crashing on iPad 2
- Sleep timer's CANCEL button doesn't do anything
- Alarm clock doesn't work if device is put to sleep
- Share button for Facebook didn't work
- App refuses to respond to slide up play button
- Regularly stops streaming at intervals
- App doesn't show on App Store search
- Latest version is buggier
- Cannot open menu or select i icon when streaming
- No in-app volume control
- When phone locks, black screen with volume control, no visual indication of KCSM
- App doesn't work since iOS8 update
- App prevented iPad 1 users from listening
- No volume control
- No playlist
- Latest version of the app is still ugly
- App doesn't work with AirPlay
- App won't play on speakers anymore, only on phone
- Pause button switches back to Play a few seconds later
- App doesn't switch to digital out when headphone amp/dac is plugged in
Requested features
14 requests- Put AirPlay control back
- Improve sleep timer
- Make Mac version a full app
- Add year of track release
- Click through to album notes/Amazon
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- Dark mode option
- Change background image/font color
- Link to buy songs/albums
- Clarify red bar under song
- Put ads towards the bottom
- Add a sleep mode
- Support for retina display
- Remove or change bottom buttons
- Stop the slideshow
Groupmuse
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Jazz91 KCSM
No in-app purchases
Groupmuse
No in-app purchases
