# Stress HRV vs HARK 小茉莉

The clearest difference is in-app purchases: HARK 小茉莉 at none against Stress HRV's 3. HARK 小茉莉 also leads on update cadence (every 2 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Stress HRV sells 3 in-app purchases, starting at $1.99 per 7 days. HARK 小茉莉 asks for nothing beyond the download.

Stress HRV ships an update fortnightly, HARK 小茉莉 every 2 days. The most recent releases landed on November 5, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Stress HRV | HARK 小茉莉 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/stress-hrv-stress-tracker/id6784304541/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Freemium | — |
| Size | 45 MB | 112 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Sleep Pilot Technology Co., Ltd.](https://appshunter.io/developer/1682165802) | [世硕 陈](https://appshunter.io/developer/6795747275) |

## What reviewers say

### Stress HRV

[App page](https://appshunter.io/ios/app/stress-hrv-stress-tracker/id6784304541)

Monitor your body's stress levels using HRV and RHR data. Get personalized insights to know when to push harder or rest. Track sleep, activity, mood, and water intake with integrated features.

**Highlights:** HRV and RHR stress monitoring, Personalized baseline comparison, Guided breathing exercises, Sleep and activity tracking, Mood and water logging, Watch complications and widgets

**Features:** Family Sharing, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Yearly | $7.99 | per year |
| Lifetime | Free | one-time |


### HARK 小茉莉

[App page](https://appshunter.io/ios/app/hark/id6797818328)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Stress HRV free?

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

### Is HARK 小茉莉 free?

HARK 小茉莉 is free to download, with no in-app purchases.

### Do Stress HRV or HARK 小茉莉 have ads?

Neither Stress HRV nor HARK 小茉莉 shows ads.

### Which is updated more often, Stress HRV or HARK 小茉莉?

Stress HRV ships an update fortnightly, and HARK 小茉莉 every 2 days. Most recently, Stress HRV was updated on November 5, 2026 and HARK 小茉莉 on October 29, 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.*