# TachyMon vs Pacing

The clearest difference is review sentiment: TachyMon at 57% against Pacing's 0%. Pacing's advantage is in-app purchases (none vs 2) and update cadence (every 4 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

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

TachyMon ships an update every 3 months, Pacing every 4 days. The most recent releases landed on September 24, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | TachyMon | Pacing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (286 ratings)](https://appshunter.io/ios/app/tachymon/id1603517412/reviews)** | — |
| Number of ratings | **286** | — |
| Positive reviews | **57.2% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 36 MB | 1 MB |
| Requires iOS | **16.4** | 16.6 |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Age rating | 9+ | 4+ |
| Developer | [Whip Development Inc.](https://appshunter.io/developer/1603514887) | [Q_PERIOR AG](https://appshunter.io/developer/532082988) |

## 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


### Pacing

[App page](https://appshunter.io/ios/app/pacing/id6448513970)

This app helps individuals with ME/CFS manage their activity levels by monitoring heart rate against personalized thresholds. It provides visual cues and alerts to prevent overexertion and potential relapses, integrating with Apple Health for comprehensive tracking.

**Highlights:** Activity management for ME/CFS, Personalized heart rate thresholds, Relapse prevention alerts, Visual heart rate zone indicators, Apple Health integration, Apple Watch exclusive

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is TachyMon free?

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

### Is Pacing free?

Pacing is free to download, with no in-app purchases.

### Do TachyMon or Pacing have ads?

Neither TachyMon nor Pacing shows ads.

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

TachyMon ships an update every 3 months, and Pacing every 4 days. Most recently, TachyMon was updated on September 24, 2026 and Pacing on September 10, 2026.

---

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