Comparison

TachyMon vs MindfulPacer

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

Head to head
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/

About

MindfulPacer

Features
Read full description

MindfulPacer helps you keep a close eye on your energy levels. The app analyzes steps and heart rate via Apple Health or live from your Apple Watch. ACTIVITY PACING Set personal biometric limits and get notifications on your Apple Watch or iPhone as soon as they’re exceeded. All events are automatically saved in a journal as “Reflections” and linked to activities, helping you spot patterns that drain your energy—and avoid them. CUSTOMIZABLE Set your own thresholds and choose appropriate time intervals. You can also tailor the type and intensity of notifications. JOURNAL Log threshold crossings, link them to activities, and add symptoms or comments. These Reflections help you see how your activities relate to your overall well-being. ANALYTICS Visualize your biometric data and Reflections over different time ranges to identify recurring patterns. OUTREACH Explore current research, pacing tips, and background knowledge on our blog. Connect with others about your activity pacing strategy. PRIVACY Your data belongs to you. All data you collect with MindfulPacer is stored only within the app on your device (not on any server). You can export it anytime in Settings—for your own records or to share with a healthcare professional. Note: Biometric data (steps and heart rate) measured with Apple Watch may also be stored in Apple’s iCloud by default. DISCLAIMER MindfulPacer is not a medical product and does not provide medical services such as diagnosis, cure, mitigation, prevention, or treatment of any disease or medical condition. MindfulPacer is not a substitute for care from medical professionals. Always consult a physician before making medical decisions. DEVELOPMENT MindfulPacer is developed by researchers at the University of Zurich, a collaboration between the Human Aspects of Software Engineering Lab and the Center for Human Immunology, and is supported by the Long Covid Switzerland association. Volunteers who would like to support the project are welcome to contact us. You can find planned features and upcoming updates in the Roadmap (in Settings). More information: www.mindfulpacer.ch SETTINGS Configure MindfulPacer to your needs: with or without Apple Watch, minimal or detailed Reflections, and Light or Dark Mode. MORE INFORMATION - Project: www.mindfulpacer.ch - Blog: www.mindfulpacer.ch/blog - Privacy Policy: https://mindfulpacer.ch/datenschutzbestimmungen - Technical Support: support@mindfulpacer.ch

Screenshots

TachyMon4 screens
MindfulPacer4 screens

Verdict

The call

The clearest difference is in-app purchases: MindfulPacer at none against TachyMon's 2. TachyMon's advantage is iOS requirement (16.4 vs 18.6). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. TachyMon sells 2 in-app purchases, starting at $2.99 per month. MindfulPacer asks for nothing beyond the download.

UpkeepUpdate frequency

TachyMon ships an update every 3 months, MindfulPacer every 2 months. The most recent releases landed on October 27, 2026 and October 16, 2026 respectively.

Scorecard2 real differences · 8 level
TachyMon versus MindfulPacer: the parameters behind the verdict, then further details
ParameterTachyMonMindfulPacer
PriceFreeFree
Rating3.8 (288 ratings) — better—
Positive reviews58.0% of reviews—
Number of ratings288 — better—
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, Apple WatchiPhone, Apple Watch
Requires iOS16.4 — better18.6
Further details — not scored
Size36 MB30 MB
Age rating9+4+
DeveloperWhip Development Inc.Universitat Zurich

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

MindfulPacer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

TachyMon

Subscriptions2
  • TachyMon Premium Monthly1 Month trial$2.991 Month
  • TachyMon Premium Annual1 Month trial$19.991 Year
None

MindfulPacer

No in-app purchases

Questions

Is TachyMon free?
TachyMon is free to download, with in-app purchases available.
Is MindfulPacer free?
MindfulPacer is free to download, with no in-app purchases.
Do TachyMon or MindfulPacer have ads?
Neither TachyMon nor MindfulPacer shows ads.
Which is updated more often, TachyMon or MindfulPacer?
TachyMon ships an update every 3 months, and MindfulPacer every 2 months. Most recently, TachyMon was updated on October 27, 2026 and MindfulPacer on October 16, 2026.

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