Heartwitch vs MoshUp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Heartwitch
Stream your real-time heart rate from your Apple Watch to a web browser. Ideal for streamers who want to share their health stats during live broadcasts without extra hardware.
- Live stream heart rate data
- Uses Apple Watch sensors
- No extra hardware needed
- Sends data to web browser
- Independent watch app
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Show your heart rate as you live stream with this watch app! What is this exactly? Heartwitch is a combination Apple Watch and Web Application for sending your health data to a web browser window. Why would you want to send your health data to a web browser window? In the last few live years, live streams have become incredably popular and in many tense circumstances streamers want to share their health stats specifically their heart rate. For instance, speedrunners who wish to break records as to how quickly they can beat a game. With Heartwitch, there is no need for extra hardware. It simply uses the sensors on the Apple Watch to detect your heart rate and it sends it through our servers directly to your browsers. Do you save my health info? None of your health data is saved on our server. Every health stat is received by our servers from your Apple Watch and directly sent to the web browser. At no point is it saved on our end. Each workout is saved locally on your watch and stored on your devices along with your other workouts stored on your device but none of the health data is stored by us. How do I launch the app? I don't see an icon on my iPhone? Heartwitch is a completely independent watch app. Therefore there is no app for the iPhone and at this point there is no plan for one. How can I share my web browser window on a livestream? If you are using OBS to stream online, share your web browser window using the Window Capture Source. What makes this app so special? There's no need for additional hardware and using the Apple Watch health data is updated frequently.
MoshUp
Create unique visual effects by blending two video clips. The motion of a second recording transforms the first, allowing for interesting mapping and glitch art. Save your creations as images or videos, with options for frame repetition and camera input mixing.
- Live datamoshing
- Frame repetition
- Save as image or video
- Fade to clean camera input
- Import videos/pictures
- Reverse video import
- Mix camera with text/emojis
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With Moshup you can do live datamoshing on your iPhone or iPad. Capture a short clip and then film something different. The first recording will stick to the second recording and will be transformed by its motion. You can create some interesting mapping effects. The app was mainly used on the viral TikTok datamoshing videos over the last two years. You can also repeat Frames in order or randomly. Save the result as image or video. While data moshing you can now fade back to a clean camera input. It's now also possible to watch a preview to decide if you want to save or continue with your video recording. Full Version Features: - import videos or pictures from your gallery - videos can be imported in reverse - step back if you want to repeat the last capture - loop back to the first frame - different mirror and color modes - sound can be recorded - reverse the final videos in the gallery - mix camera input with pictures, text and emojis Have fun datamoshing :) Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: MoshUp at 84% against Heartwitch's 40%. MoshUp also leads on rating (4.5 vs 2.6) and ratings volume (1.4K vs 9). Heartwitch's advantage is in-app purchases (none vs 2). 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. MoshUp sells 2 in-app purchases, starting at $1.99 per month. Heartwitch asks for nothing beyond the download.
MoshUp holds the better App Store score, 4.5 against 2.6. That said, the two scores are not equally well evidenced: MoshUp has 1.4K ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 40% of Heartwitch's written reviews are positive against 84% of MoshUp's.
Heartwitch ships an update every 5 months, MoshUp every 2 months. The most recent releases landed on September 30, 2026 and October 23, 2026 respectively.
| Parameter | Heartwitch | MoshUp |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (9 ratings) | 4.5 (1.4K ratings) — better |
| Positive reviews | 40.0% of reviews | 83.8% of reviews — better |
| Number of ratings | 9 | 1.4K — better |
| Update frequency | Every 5 months | Every 2 months — better |
| 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 |
| Requires iOS | 14.8 | 12.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | BrightDigit | Johannes Pfahler |
Customer experience
Heartwitch
MoshUp
Bugs and requests
Heartwitch
Not enough reviews yet to summarise bugs or requests.
MoshUp
Reported bugs
4 issues- Importing videos causes freezing or crashes
- Recorded videos not saving properly
- Camera not working or laggy for some users
- Subscription/purchase issues for full version
Requested features
4 requests- Add ability to import and mosh custom videos
- Implement undo/redo functionality for editing
- Provide more control over moshing parameters
- Add audio support in free version
In-app purchases
Heartwitch
No in-app purchases
MoshUp
- Full Version Monthly$1.991 Month
- Full Version$6.99









