# TachyMon vs Heylixir

The clearest difference is rating: Heylixir at 5.0 against TachyMon's 3.8. Heylixir also leads on update cadence (fortnightly vs every 3 months) and iOS requirement (13.0 vs 16.4). TachyMon's advantage is ratings volume (287 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. TachyMon sells 2 in-app purchases, starting at $2.99 per month and Heylixir sells 6 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

Heylixir 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 1, so its average is the more settled of the two.

TachyMon ships an update every 3 months, Heylixir fortnightly. The most recent releases landed on October 23, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | TachyMon | Heylixir |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (287 ratings)](https://appshunter.io/ios/app/tachymon/id1603517412/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/heylixir-symptom-mood-track/id6504341128/reviews)** |
| Number of ratings | **287** | 1 |
| Positive reviews | 58.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 36 MB | 66 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 9+ | 17+ |
| Developer | [Whip Development Inc.](https://appshunter.io/developer/1603514887) | [Aurora Vicci LLC](https://appshunter.io/developer/1751904502) |

## What reviewers say

### TachyMon

[App page](https://appshunter.io/ios/app/tachymon/id1603517412)

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:** Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TachyMon Premium Monthly | $2.99 | per month |
| TachyMon Premium Annual | $19.99 | per year |

**What reviewers like**

- 🚀 Continuous monitoring
- 🚨 Helpful alerts for heart rate spikes/drops
- 📊 Useful data tracking and visualization
- 🤖 Customizable settings and thresholds
- 💯 Accurate heart rate measurements

**What reviewers complain about**

- 🔋 Drains Apple Watch battery quickly
- 🔒 Paywalled features that were previously free
- 🤯 Buggy and unreliable at times
- 📱 Lack of companion iPhone app for data review
- 🔇 Limited notification/alert customization

**Reported bugs**

- 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**

- 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


### Heylixir

[App page](https://appshunter.io/ios/app/heylixir-symptom-mood-track/id6504341128)

Track symptoms, mood, medications, and sleep to understand chronic illness triggers and patterns. Gain personalized health insights and connect with supportive communities. Manage your well-being with reminders and routines.

**Highlights:** Symptom and medication tracking, Mood and sleep logging, Guided journaling prompts, Personalized health insights, Supportive online communities, Medication and appointment reminders

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Monthly | $8.99 | per month |
| Monthly Pro | $14.99 | per month |
| Standard Monthly (3 Months) | $38.99 | per 3 months |
| Monthly Pro (3 Months) | $59.99 | per 3 months |
| Standard Annual | $155.99 | per year |
| Pro Annual | $239.99 | per year |


## Frequently asked questions

### Is TachyMon free?

TachyMon is free to download, with in-app purchases available.

### Is Heylixir free?

Heylixir is free to download, with in-app purchases available.

### Which has better reviews, TachyMon or Heylixir?

Heylixir is rated higher. TachyMon averages 3.8 out of 5 from 287 ratings, while Heylixir averages 5.0 from 1 ratings.

### Do TachyMon or Heylixir have ads?

Neither TachyMon nor Heylixir shows ads.

### Which is updated more often, TachyMon or Heylixir?

TachyMon ships an update every 3 months, and Heylixir fortnightly. Most recently, TachyMon was updated on October 23, 2026 and Heylixir on September 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*