TachyMon

TachyMon

Custom Heart Rate Alerts

286 ratings
205 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • July 8, 2022
  • August 31, 2026

Features

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About

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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What users say

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What's New in TachyMon

1.6.7

August 31, 2026

- Improved Bluetooth heart rate sensor connections - Fixed an issue where some Bluetooth sessions could be missing heart rate data - Other bug fixes and improvements

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2

Subscriptions & In-App Purchases

TachyMon Premium Monthly

Access to premium features

$2.991 Month
1 Month trial
How to cancel TachyMon subscription ⁉️

User reviews

Super helpful, would recommend for everyone with POTS

Overall, I totally love this app. I use it daily as a POTS patient, and it's helpful for pacing, especially to have tactile feedback to let you know symptoms are flaring without having to be looking at a screen at the right moment to catch it. Super useful and absolutely a must-have for people with POTS. Especially pairs well with the FatigueSense app, with TachyMon helping immediate pacing and FatigueSense using TachyMon's more frequent data to better calculate long-term pacing.

I particularly love the initiative to create something to help the (mostly young women) POTS and other chronic illness patients, when medical misogyny leaves us understudied and otherwise without many tools.

I only have very few very minor suggestions, and why I would like them.

1. Ads to use premium features — Like many disabled people, I can't work, so I don't have the money for a premium subscription. A popup such as "This is a premium feature. — Watch ad (effective for one use) — View premium options — Cancel" would allow me and others in similar situations to use these helpful features and monetarily support the app even without disposable income to do it directly, and people who have the money would still buy premium for the convenience and time-saving.

2. Resting rate instead of recent average — Currently, my level 1 delta low alert is -45. With this, I get alerted when intentionally resting to calm the POTS, but any higher amount would be more than the difference between my resting and asleep rates, and would effectively make the setting never trigger. A toggle to switch between using recent average and resting rate would allow using resting during low activity to alert for standing spikes without alerting intentional rest, and switching to recent average during activity expected to be outside of resting range to allow dynamic alerting during varying activity levels.

3. Explanation of recent average — This is a very simple one. Is the recent average using all recordings within a certain time? The last certain amount of recordings? Or something else? Basically just adding a description of what exactly it is, as opposed to "recent average" without elaboration. I like knowing how everything works.

4. Sleep screen — This one may not be doable and might just be how Apple works it, so fully disregard if that's the case. I have my watch set to use a sleep screen during sleep mode, so it first opens to a much dimmer, simple screen showing the time, and further interaction goes to the standard lock screen. This keeps me from flashbanging myself awake with a bright screen if I'm just moving my arms. Having an open session seems to turn this off, and it just shows the much brighter standard lock screen. Not a huge deal as I just end the session and use the built-in intermittent heart rate checks at night or when napping, but it would be nice to be able to use the app's more constant monitoring without potentially disturbing my sleep.

Again, wonderful app and totally love it, even with not having these things. I, as a person with POTS, recommend everyone else with it try this app. Even without the personal experience, I recommend to anyone who needs to monitor heart rate or its changes for any other reasons. Great app.
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Amazing!!!!!!

Thank you so much for making this! I have POTs and this is making such a difference in my life. I can’t tell you how much I appreciate this app!

They started charging us 🤬

Works relatively well, however is used to be free to monitor your hr and now they charge for it. Disabled ppl don’t have money. Thx a lot for giving us a free tool and then decide to start charging ppl. Greedy jerk. Don’t we have enough of that in the world?!

Amazing but I want to suggest

I love this app so far. I have POTS and been trying to record my days more organized than just the heart rate app on Apple Watch. This app has helped so much in documenting when my heart rate got too high and low, I do enjoy all the features it includes too. My only suggestion is for symptoms adding in “overheated” just because most of the time that’s my biggest trigger but not all the time. Overall thank you for making this app! It helps so many people. 🥺
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Is it really free?

It will not let me start a monitoring session unless I pay for a subscription. I’m reading responses from the all saying that monitoring remains free but it will not allow me to move forward without paying for the subscription.

User experience

🐞

Reported Bugs

4 issues

Frequent disconnections from heart rate monitor

Bug

Inconsistent data sync between watch and phone

Bug

Inability to reinstall app on new devices

Bug

Freezing and crashing issues on latest updates

Bug
✨

Requested Features

5 requests

Add ability to log symptoms and notes

Feature

Implement emergency contact alerts

Feature

Improve data export and sharing options

Feature

Enhance graphing and trend analysis tools

Feature

Optimize battery usage and background monitoring

Feature

FAQ

What does TachyMon do?

TachyMon provides custom alerts for significant changes in your heart rate. It's designed to help users monitor heart rate fluctuations related to conditions like POTS, tachycardia, or during exercise, offering timely notifications based on user-defined thresholds.

What are the key features of TachyMon?

Key features include customizable upper and lower heart rate thresholds, haptic alerts, a main display showing current heart rate and its difference from the average, and tracking of alert events with detailed data. Premium features offer advanced charting, reporting, and direct iPhone monitoring.

Is TachyMon free to use?

The app offers a free version with core features for heart rate monitoring and alerts. Additional advanced functionalities, such as detailed charts, PDF reports, and direct iPhone monitoring with Bluetooth sensors, are available through premium in-app purchases.

What devices is TachyMon compatible with?

TachyMon is designed to work with Apple Watch for real-time alerts and data tracking. It also integrates with the Apple Health app to store workout information. A companion iPhone app is available for reviewing detailed monitoring data and accessing premium features.

Who would benefit from using TachyMon?

This app is beneficial for individuals managing conditions like Postural Orthostatic Tachycardia Syndrome (POTS) or tachycardia, who experience rapid heart rate increases. It's also useful for athletes or anyone who needs to closely monitor their heart rate during physical activity or for general health awareness.