Comparison

Stromno vs TachyMon

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

Head to head
About

Stromno

Broadcast your real-time heart rate from your Apple Watch to live streams on platforms like Twitch and YouTube. Easily set up a customizable widget or overlay for your stream with a simple login code.

Highlights
  • Heart rate streaming from Apple Watch
  • Live stream integration (Twitch, YouTube)
  • Customizable widget/overlay designs
  • Easy 1-minute setup
  • OBS, Twitch Studio, XSplit, Streamlabs OBS compatible
  • Integrates with Apple Health
Features
Read full description

Stromno app allows you easily broadcast your heart rate data from Apple Watch and show it on live stream. Login with a short code and BPM value will be shown in your personal widget/overlay. Stromno was created for live streamers to show real-time heart rate on Twitch, YouTube. It is easy to set up Stromno heart rate widget in 1 minute. You can customize the widget and get a unique URL for OBS(Twitch Studio, XSplit, Streamlabs OBS) on the website. Multiple designs available to fit your stream layout. The App integrates with Apple Health app. Visit stromno.com to create an account, get login code, design your widget/overlay. How to use: - get the Apple Watch app - create an account on stromno.com - get a short login code on the site Dashboard - open the Watch app, login, start streaming - change the widget on the website - copy your heart rate widget URL and use it as a Browser source (in OBS, Twitch Studio, XSplit, Streamlabs OBS) - enjoy more fun and interactivity on your live stream on Twitch or YouTube

About

TachyMon

Receive immediate alerts for significant heart rate fluctuations, ideal for conditions like POTS or during exercise. Customize thresholds and receive detailed event tracking. Premium features offer advanced data visualization and reporting.

Highlights
  • Customizable heart rate threshold alerts
  • Haptic feedback for alerts
  • Real-time heart rate and average display
  • Alert event tracking and logging
  • Temporary alert silencing
  • Detailed monitoring data review
  • Shareable PDF reports (premium)
Features
Read full description

Get rapid alerts for significant heart rate changes due to POTS, tachycardia, exercise or other activities. Features: - Haptic alerts based on custom threshold levels. - Customizable upper and lower threshold levels for current heart rate and difference from recent average. - The main display shows: current heart rate, moving average of recent heart rate, and delta of current heart rate to average. - Display colors change to show severity of alert. - The app tracks alert events with start time of event, event duration, starting average heart rate, and maximum or minimum heart rate during event. - Triple tap to temporarily silence alerts. - Review detailed monitoring data on the companion iPhone app. Premium features: - View detailed heart rate chart for each event - Share event info directly from watch, or export from iPhone to Photos app - Run monitoring sessions directly on your iPhone, without an Apple Watch, by connecting a Bluetooth heart rate sensor - Generate a shareable PDF report for each session - Add notes and symptoms to Alert Events - Export Alert Event raw heart rate data to .csv - View live session data on the iPhone companion app - View a summary of Alert Events over last week / month / year TachyMon was created by the developer for his niece Alex, who was diagnosed with Postural Orthostatic Tachycardia Syndrome (POTS) in the fall of 2021. Alex was experiencing frequent fainting, and her family noticed the episodes often followed a rapid rise in her heart rate. She wanted a heads-up the moment that started happening. Alex uses TachyMon's alerts as a cue to sit or crouch down when her heart rate climbs quickly, and she finds the app helps her feel a bit more in control of her day. It is a simple but specialized app, and we hope it may help others with POTS, or anyone who wants to be alerted to changes in their heart rate. APPLE HEALTH TachyMon integrates with the Apple Health app. TachyMon stores workout information (including heart rate) with the Apple Health app. WARNING: It is important to consult with medical professionals if you are concerned about your health. The TachyMon app is intended for informational purposes only. It is not a substitute for specialized medical care. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

TachyMon4 screens

Verdict

The call

The clearest difference is price: TachyMon at Free against Stromno's $4.99. TachyMon also leads on rating (3.8 vs 3.1) and ratings volume (288 vs 24). Stromno's advantage is in-app purchases (none vs 2) and chart position (#74 vs unranked). On review sentiment, update cadence, 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

TachyMon is free to download; Stromno costs $4.99 up front. TachyMon sells 2 in-app purchases, starting at $2.99 per month. Stromno asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

TachyMon holds the better App Store score, 3.8 against 3.1. That said, the two scores are not equally well evidenced: TachyMon has 288 ratings behind it against 24, so its average is the more settled of the two. Written reviews split almost evenly too, at 57% and 58% positive.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. Both last shipped on October 25, 2026.

Scorecard7 real differences · 4 level
Stromno versus TachyMon: the parameters behind the verdict, then further details
ParameterStromnoTachyMon
Price$4.99Free — better
Rating3.1 (24 ratings)3.8 (288 ratings) — better
Positive reviews57.1% of reviews58.0% of reviews — better
Number of ratings24288 — better
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank#74 — better—
DevicesiPhone, iPod, Apple Watch — betteriPhone, Apple Watch
Requires iOS13.0 — better16.4
Further details — not scored
Size1 MB36 MB
Age rating4+9+
DeveloperYaroslav HryniukWhip Development Inc.

Customer experience

Stromno

All ratings24 ratings
Positive54.2%
Neutral0.0%
Negative45.8%
Written reviews28 reviews
Positive57.1%
Neutral0.0%
Negative42.9%

TachyMon

All ratings286 ratings
Positive69.2%
Neutral5.2%
Negative25.5%
Written reviews207 reviews
Positive58.0%
Neutral13.0%
Negative29.0%

Bugs and requests

Stromno

Not enough reviews yet to summarise bugs or requests.

TachyMon

Reported bugs

4 issues
  • Frequent disconnections from heart rate monitor
  • Inconsistent data sync between watch and phone
  • Inability to reinstall app on new devices
  • Freezing and crashing issues on latest updates

Requested features

5 requests
  • Add ability to log symptoms and notes
  • Implement emergency contact alerts
  • Improve data export and sharing options
  • Enhance graphing and trend analysis tools
  • Optimize battery usage and background monitoring

In-app purchases

None

Stromno

No in-app purchases

2 purchases

TachyMon

Subscriptions2
  • TachyMon Premium Monthly1 Month trial$2.991 Month
  • TachyMon Premium Annual1 Month trial$19.991 Year

Questions

Is Stromno free?
Stromno costs $4.99, with no in-app purchases.
Is TachyMon free?
TachyMon is free to download, with in-app purchases available.
Which has better reviews, Stromno or TachyMon?
TachyMon is rated higher. Stromno averages 3.1 out of 5 from 24 ratings, while TachyMon averages 3.8 from 288 ratings.
Do Stromno or TachyMon have ads?
Neither Stromno nor TachyMon shows ads.
Which is updated more often, Stromno or TachyMon?
Stromno ships an update every 3 months, and TachyMon every 3 months. Most recently, Stromno was updated on October 25, 2026 and TachyMon on October 25, 2026.

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