TachyMon vs Beyond Oximeter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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)
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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/
Beyond Oximeter
Monitor your vital signs like SpO2, pulse, and respiratory rate in real-time. Record, share, and view trend graphs of your measurements. Requires a Bluetooth-enabled device to function.
- Real-time SpO2 and pulse rate monitoring
- Respiratory rate and PI tracking
- Vital sign trend graphs
- Data recording and playback
- Share measurement reports
- Apple Health sync
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Beyond Med Shop Oximeter provides you with a variety of services, including real-time measurement of your vital signs, data recording sharing, viewing device instructions, etc. Before using the service, you need to register for an account in the APP. After sign in, the APP will automatically search and connect to your oximeter device. Note: To use the app, a Bluetooth-enabled Beyond Med Shop Oximeter is required. -What you can get with this APP: -View SpO2, pulse rate, respiratory rate, PI (Perfusion Index) in real-time. -View the vital signs trend graph. -Record and playback trend changes. -View or delete records. -Share your data measurement report -Apple Health Sync: Save all your data to Apple Health -View device instructions Declaration of jurisdiction: The medical hardware is licensed for use in the USA. If using this App outside of USA, it is your responsibility to comply with applicable local laws. MEDICAL DISCLAIMER: The data provided by this app is not intended for diagnostic or therapeutic purposes; If you have any health conditions, please be sure to consult your doctor. Note: The Beyond Med Shop Oximeter APP is designed to work only with Bluetooth-enabled Beyond Med Shop Oximeter device. To learn more about this device or to purchase it, please visit www.beyondmedshop.com.
Screenshots
Verdict
The clearest difference is review sentiment: TachyMon at 58% against Beyond Oximeter's 13%. TachyMon also leads on rating (3.8 vs 2.2) and ratings volume (288 vs 90). Beyond Oximeter's advantage is in-app purchases (none vs 2) and iOS requirement (11.0 vs 16.4). On price, 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
Both are free to download. TachyMon sells 2 in-app purchases, starting at $2.99 per month. Beyond Oximeter asks for nothing beyond the download.
TachyMon holds the better App Store score, 3.8 against 2.2. Both are backed by a comparable volume of ratings — 288 and 90 respectively. Written reviews point the same way: 58% of TachyMon's written reviews are positive against 13% of Beyond Oximeter's.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.
| Parameter | TachyMon | Beyond Oximeter |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (288 ratings) — better | 2.2 (90 ratings) |
| Positive reviews | 58.0% of reviews — better | 13.3% of reviews |
| Number of ratings | 288 — better | 90 |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Requires iOS | 16.4 | 11.0 — better |
| Further details — not scored | ||
| Size | 36 MB | 20 MB |
| Age rating | 9+ | 12+ |
| Developer | Whip Development Inc. | Intelliworks, LLC |
Customer experience
TachyMon
Beyond Oximeter
User reviews
TachyMon
From 288 App Store ratingsWhat we love
- 🚀 Continuous monitoring
- 🚨 Helpful alerts for heart rate spikes/drops
- 📊 Useful data tracking and visualization
- 🤖 Customizable settings and thresholds
- 💯 Accurate heart rate measurements
Room to improve
- 🔋 Drains Apple Watch battery quickly
- 🔒 Paywalled features that were previously free
- 🤯 Buggy and unreliable at times
- 📱 Lack of companion iPhone app for data review
- 🔇 Limited notification/alert customization
Beyond Oximeter
From 90 App Store ratingsWhat we love
- 👍 Device hardware seems good
- 👍 Guest mode works without issue
- 👍 Syncs well with Apple Health
- 👍 Easy to use app
- 👍 Transfers data to Apple Health without issues
Room to improve
- 🐛 Cannot create account
- 🐛 Cannot change password
- 🐛 Password too long or not strong enough
- 🐛 Bluetooth functionality does not work
- 🐛 App is unstable and crashes
Bugs and 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
Beyond Oximeter
Reported bugs
14 issues- Cannot change password
- Cannot create an account
- Password requirements are too strict or unclear
- Bluetooth pairing issues
- App freezes or crashes
Show 9 moreShow fewer
- Data sync issues with Apple Health
- Cannot paste passwords or use password managers
- Verification code not received via email
- App requires frequent re-login
- App shuts down unexpectedly
- App does not remember password or Face ID
- Data displayed in the app does not match the device
- Date picker and keyboard issues during account creation
- App does not sync accurately to Health
Requested features
6 requests- Show tracings on the report
- Allow recording notes for readings
- App for Apple Watch
- More history at a glance
- Dark mode/blackout feature for screen brightness
Show 1 moreShow fewer
- Ability to record preview heart rate
In-app purchases
TachyMon
- TachyMon Premium Monthly1 Month trial$2.991 Month
- TachyMon Premium Annual1 Month trial$19.991 Year
Beyond Oximeter
No in-app purchases









