# HRV Trace vs CapnoTrainer

The clearest difference is price: CapnoTrainer at Free against HRV Trace's $19.99. CapnoTrainer also leads on update cadence (every 3 weeks vs every 11 months). HRV Trace's advantage is iOS requirement (11.0 vs 13.0). On ads, in-app purchases and device support there is nothing between them.

CapnoTrainer is free to download; HRV Trace costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HRV Trace ships an update every 11 months, CapnoTrainer every 3 weeks. The most recent releases landed on October 12, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | HRV Trace | CapnoTrainer |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hrv-trace/id1235042808/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 44 MB | 54 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ibernetics, LLC](https://appshunter.io/developer/1189391885) | [Muhammad Arshad Khan](https://appshunter.io/developer/1617354083) |

## What reviewers say

### HRV Trace

[App page](https://appshunter.io/ios/app/hrv-trace/id1235042808)

This app visualizes your heart rate variability to help you understand and manage your body's stress response. Learn to recover, adapt, and reduce strain for improved performance and well-being.

**Highlights:** Visualize heartbeat patterns (HRV Trace), Instantaneous stress response feedback, Learn stress regulation skills (Recover, Ready, Reset, Recondition), Track progress in stress management, Integrates with chaos theory for analysis, Augments mindfulness and resiliency training

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

**In-app purchases:** none


### CapnoTrainer

[App page](https://appshunter.io/ios/app/capnotrainer/id1617354081)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HRV Trace free?

HRV Trace costs $19.99, with no in-app purchases.

### Is CapnoTrainer free?

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

### Do HRV Trace or CapnoTrainer have ads?

Neither HRV Trace nor CapnoTrainer shows ads.

### Which is updated more often, HRV Trace or CapnoTrainer?

HRV Trace ships an update every 11 months, and CapnoTrainer every 3 weeks. Most recently, HRV Trace was updated on October 12, 2026 and CapnoTrainer on September 29, 2026.

---

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