Comparison

TachyMon vs Not Therapy

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

Not Therapy

Access 24/7 AI-powered mental wellness support with no judgment or waiting. Utilize evidence-based CBT techniques, personalized mood tracking, and behavior change modules for self-care and habit building.

Highlights
  • 24/7 AI chat support
  • Evidence-based CBT techniques
  • Personalized mood tracking
  • Behavior change modules
  • Complete privacy
  • Instant support
Features
Read full description

Feeling overwhelmed by stress, anxiety, or low mood? Not Therapy offers 24/7 AI-powered support that fits your life - no appointments, no waiting lists, no judgment. What makes Not Therapy different: - Instant AI chat support whenever you need it - 2 AM or 2 PM - Evidence-based CBT techniques adapted for self-care - Personalized mood tracking and insights - Behavior change modules that actually work - Complete privacy - your conversations stay with you Perfect for when you're: - Stressed about work, relationships, or life changes - Dealing with anxiety that keeps you up at night - Feeling down but not ready for traditional therapy - Looking for self-care tools that go beyond meditation apps - Wanting to build better mental health habits How it works: Chat with our AI companion trained in cognitive behavioral therapy principles. Share what's on your mind, explore your thoughts and feelings, and get personalized coping strategies. Our behavior change modules help you build lasting wellness habits, from managing negative thought patterns to improving sleep and stress response. Why choose AI support: Available instantly when you need it most. No scheduling hassles, no insurance requirements, no fear of judgment. Just supportive, evidence-based guidance tailored to your unique situation. Perfect as a first step toward better mental health or as ongoing support alongside other wellness practices. Your mental wellness journey starts here. Download Not Therapy and discover what 24/7 self-care support feels like. Note: This app provides educational content and self-help tools. For crisis situations or severe mental health concerns, please contact emergency services or a licensed mental health professional. This app is subject to the Apple Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

TachyMon4 screens
Not Therapy3 screens

Verdict

The call

The clearest difference is rating: Not Therapy at 5.0 against TachyMon's 3.8. Not Therapy also leads on update cadence (every 9 days vs every 3 months). TachyMon's advantage is ratings volume (287 vs 2). On price, ads, in-app purchases and monetization model 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 Not Therapy sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Not Therapy holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: TachyMon has 287 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

TachyMon ships an update every 3 months, Not Therapy every 9 days. The most recent releases landed on October 21, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 7 level
TachyMon versus Not Therapy: the parameters behind the verdict, then further details
ParameterTachyMonNot Therapy
PriceFreeFree
Rating3.8 (287 ratings)5.0 (2 ratings) — better
Positive reviews57.6% of reviews—
Number of ratings287 — better2
Update frequencyEvery 3 monthsEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS16.415.1 — better
Further details — not scored
Size36 MB143 MB
Age rating9+4+
DeveloperWhip Development Inc.Chad Newbry

Customer experience

TachyMon

All ratings286 ratings
Positive69.2%
Neutral5.2%
Negative25.5%
Written reviews205 reviews
Positive57.6%
Neutral13.2%
Negative29.3%

Not Therapy

All ratings2 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

Not Therapy

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

Not Therapy

Subscriptions2
  • Weekly Premium$4.997 Days
  • Monthly Premium$49.991 Year

Questions

Is TachyMon free?
TachyMon is free to download, with in-app purchases available.
Is Not Therapy free?
Not Therapy is free to download, with in-app purchases available.
Which has better reviews, TachyMon or Not Therapy?
Not Therapy is rated higher. TachyMon averages 3.8 out of 5 from 287 ratings, while Not Therapy averages 5.0 from 2 ratings.
Do TachyMon or Not Therapy have ads?
Neither TachyMon nor Not Therapy shows ads.
Which is updated more often, TachyMon or Not Therapy?
TachyMon ships an update every 3 months, and Not Therapy every 9 days. Most recently, TachyMon was updated on October 21, 2026 and Not Therapy on October 6, 2026.

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