Watchbell vs UTM SE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Watchbell
This app provides a variety of sound effects for your smartwatch, including bike bells, a cowbell, and a foghorn. It's designed to help you get noticed in various situations, from cycling to simply having fun. Ensure your watch is not in silent mode and no Bluetooth devices are connected to play the sounds.
- Variety of sound effects
- Bike bell simulation
- Cowbell sound
- Foghorn sound
- Attention-grabbing alerts
- Fun sound effects
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Useful for all those who want to draw attention to themselves. - People riding their Bikes - Parents pushing their buggys - Just for fun Currently there are four different bells available. - Oldschool Bike Bell - High Pitched Bell - Cowbell - Fog horn To play back the sounds on the watch silent mode must be disabled and no bluetooth device should be paired with the watch.
UTM SE
Experience classic computing by running old-school games and software. This emulator supports various display modes and processor architectures, allowing you to run pre-built systems or configure your own.
- Run classic software and games
- VGA and terminal modes
- Emulates x86, ARM, PPC, RISC-V
- Pre-built or custom machine configurations
- Built from QEMU
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UTM SE is a PC emulator that allows you to run classic software and old-school games. * Supports both VGA mode for graphics and terminal mode for text-only operating systems * Emulates x86, ARM, PPC, and RISC-V architectures * Run pre-built machines or create your own configuration from scratch * Built from QEMU, a powerful and widely used emulator
Screenshots
Verdict
The clearest difference is rating: UTM SE at 3.8 against Watchbell's 2.5. UTM SE also leads on review sentiment (55% vs 25%) and ratings volume (565 vs 2). Watchbell's advantage is in-app purchases (none vs 3) and update cadence (daily vs every 4 months). On price, 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
Both are free to download. UTM SE sells 3 one-off in-app purchases. Watchbell asks for nothing beyond the download.
UTM SE holds the better App Store score, 3.8 against 2.5. That said, the two scores are not equally well evidenced: UTM SE has 565 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 25% of Watchbell's written reviews are positive against 55% of UTM SE's.
Watchbell ships an update daily, UTM SE every 4 months. Both last shipped on November 3, 2026.
| Parameter | Watchbell | UTM SE |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (2 ratings) | 3.8 (565 ratings) — better |
| Positive reviews | 25.0% of reviews | 54.7% of reviews — better |
| Number of ratings | 2 | 565 — better |
| Update frequency | Daily — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod, Vision Pro — better |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 3 MB | 1.6 GB |
| Age rating | 4+ | 4+ |
| Developer | Philipp Wallrich | Turing Software, LLC |
Customer experience
Watchbell
UTM SE
Bugs and requests
Watchbell
Not enough reviews yet to summarise bugs or requests.
UTM SE
Reported bugs
3 issues- Inability to select .img files as floppy boot images
- Crashes when trying to leave a VM
- Crashes when adjusting virtual CD-ROM drive settings
Requested features
3 requests- Add support for JIT compilation to improve performance
- Improve Magic Keyboard support
- Allow exporting VMs to run on other platforms
In-app purchases
Watchbell
No in-app purchases
UTM SE
- Transistor$0.99
- Chip$4.99
- Computer$9.99
