Comparison

TachyMon vs Hypermobility & hEDS Exercises

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

Hypermobility & hEDS Exercises

This app provides AI-powered coaching and tailored exercise plans for individuals with hypermobility and Ehlers-Danlos Syndrome. It features a readiness score that prioritizes joint health, cadence coaching, and flare tracking to help users train safely and effectively.

Highlights
  • AI readiness score
  • hEDS-adapted running plans
  • Cadence coaching
  • Joint-safe strength programming
  • Flare tracking and insights
  • Offline readiness score
Features
Read full description

FlexAthlete is built for runners with Ehlers-Danlos syndrome and hypermobility who want to train to perform, not just cope. Every morning, a 20-second check-in turns three simple questions into a readiness score from 0 to 100. Unlike generic recovery apps, FlexAthlete weighs joint pain more heavily and caps your score during a flare, so it never pushes you toward injury. WHAT YOU GET - A private AI coach that knows your readiness, joints, and flare history, and answers your training questions in plain language - A readiness score that respects hypermobile joints and works fully offline - hEDS-adapted plans for 5K, 10K, and the half marathon, including a gentle 20-week build - Cadence coaching with an optional metronome to shorten your stride and cut joint impact - Joint-safe strength programming built on isometric and eccentric work - Flare tracking with pattern insights so you learn your own triggers - A daily coaching insight in plain, athlete-to-athlete language Train smarter, protect your joints, and keep making progress between flares. This app offers a weekly subscription with a 3-day free trial, and an annual subscription. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel subscriptions in your Apple ID Account Settings. Restore purchases from the app settings. Terms of Use (EULA): https://www.appharbour.com/flexathlete/terms.html Privacy Policy: https://www.appharbour.com/flexathlete/privacy.html

Screenshots

TachyMon4 screens
Hypermobility & hEDS Exercises4 screens

Verdict

The call

The clearest difference is monetization model: TachyMon at free with in-app purchases against Hypermobility & hEDS Exercises's subscription. TachyMon also leads on ratings volume (288 vs 1). On price, rating, update cadence and ads 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 and Hypermobility & hEDS Exercises sells 2 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Hypermobility & hEDS Exercises holds the better App Store score, 4.0 against 3.8. That said, the two scores are not equally well evidenced: TachyMon has 288 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

TachyMon ships an update every 3 months, Hypermobility & hEDS Exercises every 2 months. Both last shipped on October 25, 2026.

Scorecard2 real differences · 8 level
TachyMon versus Hypermobility & hEDS Exercises: the parameters behind the verdict, then further details
ParameterTachyMonHypermobility & hEDS Exercises
PriceFreeFree
Rating3.8 (288 ratings)4.0 (1 ratings) — better
Positive reviews58.0% of reviews—
Number of ratings288 — better1
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS16.4 — better17.0
Further details — not scored
Size36 MB2 MB
Age rating9+17+
DeveloperWhip Development Inc.App Harbour ApS

Customer experience

TachyMon

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

Hypermobility & hEDS Exercises

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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

Hypermobility & hEDS Exercises

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
2 purchases

Hypermobility & hEDS Exercises

Subscriptions2
  • Weekly Premium3 Days trial$3.997 Days
  • Annual Premium3 Days trial$39.991 Year

Questions

Is TachyMon free?
TachyMon is free to download, with in-app purchases available.
Is Hypermobility & hEDS Exercises free?
Hypermobility & hEDS Exercises is free to download, with in-app purchases available.
Which has better reviews, TachyMon or Hypermobility & hEDS Exercises?
Hypermobility & hEDS Exercises is rated higher. TachyMon averages 3.8 out of 5 from 288 ratings, while Hypermobility & hEDS Exercises averages 4.0 from 1 ratings.
Do TachyMon or Hypermobility & hEDS Exercises have ads?
Neither TachyMon nor Hypermobility & hEDS Exercises shows ads.
Which is updated more often, TachyMon or Hypermobility & hEDS Exercises?
TachyMon ships an update every 3 months, and Hypermobility & hEDS Exercises every 2 months. Most recently, TachyMon was updated on October 25, 2026 and Hypermobility & hEDS Exercises on October 25, 2026.

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