# Stress Tracker HRV vs LockIN

The clearest difference is price: LockIN at Free against Stress Tracker HRV's $7.99. Stress Tracker HRV's advantage is in-app purchases (none vs 3) and iOS requirement (13.0 vs 26.0). On ads and device support there is nothing between them.

LockIN is free to download; Stress Tracker HRV costs $7.99 up front. LockIN sells 3 in-app purchases, starting at $5.99 per month. Stress Tracker HRV asks for nothing beyond the download.

## The numbers

| Metric | Stress Tracker HRV | LockIN |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/stress-tracker-hrv/id6748257580/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Monetization | Paid | — |
| Size | 5 MB | 16 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Alvaro Garcia Pizarro](https://appshunter.io/developer/1822790774) | [Ryan Bergeron](https://appshunter.io/developer/935030147) |

## What reviewers say

### Stress Tracker HRV

[App page](https://appshunter.io/ios/app/stress-tracker-hrv/id6748257580)

Monitor your body's stress levels, sleep quality, and recovery using Heart Rate Variability (HRV) data from your Apple Watch. Gain insights into your mental and physical well-being to make informed decisions about rest and activity.

**Highlights:** Real-time stress tracking via HRV, Daily and weekly stress trend analysis, Recovery Index for bounce-back assessment, Sleep score and optimization insights, On-device data privacy

**Features:** Apple Watch app

**In-app purchases:** none


### LockIN

[App page](https://appshunter.io/ios/app/lockin-zone-2-running/id6788562182)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LockIN Premium | $5.99 | per month |
| Premium Annual | $39.99 | per year |
| Lifetime Premium | $99.99 | one-time |


## Frequently asked questions

### Is Stress Tracker HRV free?

Stress Tracker HRV costs $7.99, with no in-app purchases.

### Is LockIN free?

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

### Do Stress Tracker HRV or LockIN have ads?

Neither Stress Tracker HRV nor LockIN shows ads.

---

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