TachyMon vs Not Therapy
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/
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.
- 24/7 AI chat support
- Evidence-based CBT techniques
- Personalized mood tracking
- Behavior change modules
- Complete privacy
- Instant support
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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
Verdict
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
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.
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.
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.
| Parameter | TachyMon | Not Therapy |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (287 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 57.6% of reviews | — |
| Number of ratings | 287 — better | 2 |
| Update frequency | Every 3 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 15.1 — better |
| Further details — not scored | ||
| Size | 36 MB | 143 MB |
| Age rating | 9+ | 4+ |
| Developer | Whip Development Inc. | Chad Newbry |
Customer experience
TachyMon
Not Therapy
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
TachyMon
- TachyMon Premium Monthly1 Month trial$2.991 Month
- TachyMon Premium Annual1 Month trial$19.991 Year
Not Therapy
- Weekly Premium$4.997 Days
- Monthly Premium$49.991 Year









