# Stress vs HARK 小茉莉

The clearest difference is in-app purchases: HARK 小茉莉 at none against Stress's 2. HARK 小茉莉 also leads on update cadence (every 2 days vs fortnightly) and iOS requirement (18.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Stress sells 2 in-app purchases, starting at $1.99 per 7 days. HARK 小茉莉 asks for nothing beyond the download.

Stress ships an update fortnightly, HARK 小茉莉 every 2 days. The most recent releases landed on October 12, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Stress | HARK 小茉莉 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/stress-hrv-tracker/id6784304541/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Freemium | — |
| Size | 58 MB | 112 MB |
| Requires iOS | 26.0 | **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

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

Understand your body's stress levels by tracking HRV, RHR, sleep, and activity against your personal baseline. Receive daily guidance on whether to push harder or rest, with integrated breathing exercises and mood logging.

**Highlights:** Personalized HRV and RHR baseline, Daily stress level assessment, Guided breathing exercises, Sleep and activity tracking, Mood and water logging, Watch complications and widgets, Data privacy and on-device processing

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stress App Weekly Premium | $1.99 | per 7 days |
| Stress App Annual Premium | $7.99 | per year |


### 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 free?

Stress 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 or HARK 小茉莉 have ads?

Neither Stress nor HARK 小茉莉 shows ads.

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

Stress ships an update fortnightly, and HARK 小茉莉 every 2 days. Most recently, Stress was updated on October 12, 2026 and HARK 小茉莉 on October 9, 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.*