# RHR Tracker for Watch vs Hydro Buddy

The clearest difference is price: RHR Tracker for Watch at Free against Hydro Buddy's $0.99. RHR Tracker for Watch also leads on rating (5.0 vs 3.4) and device support (4 vs 2). Hydro Buddy's advantage is in-app purchases (none vs 1) and update cadence (every 2 months vs every 37 months). On ratings volume and ads there is nothing between them.

RHR Tracker for Watch is free to download; Hydro Buddy costs $0.99 up front. RHR Tracker for Watch sells 1 one-off in-app purchase. Hydro Buddy asks for nothing beyond the download.

RHR Tracker for Watch holds the better App Store score, 5.0 against 3.4. Both are backed by a comparable volume of ratings — 6 and 5 respectively.

RHR Tracker for Watch ships an update every 37 months, Hydro Buddy every 2 months. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | RHR Tracker for Watch | Hydro Buddy |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/rhr-tracker-for-watch/id1502531682/reviews)** | [3.4 (5 ratings)](https://appshunter.io/ios/app/hydro-buddy/id1532655368/reviews) |
| Number of ratings | **6** | 5 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 2 months** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 2 MB | 1 MB |
| Requires iOS | **15.0** | 27.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 12+ | 17+ |
| Developer | [Sydvesti Oy](https://appshunter.io/developer/912783647) | [Kronovi Corporation](https://appshunter.io/developer/1155745190) |

## What reviewers say

### RHR Tracker for Watch

[App page](https://appshunter.io/ios/app/rhr-tracker-for-watch/id1502531682)

This app tracks your resting heart rate using data from your Apple Watch and the Health app. It monitors changes, alerts you to elevated rates, and allows symptom logging. View daily min/max values and receive morning reports comparing your RHR to your long-term average.

**Highlights:** Tracks resting heart rate changes, Alerts for elevated RHR, Symptom logging, Watch face complications, Daily min/max RHR values, Morning RHR reports, iCloud data syncing

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $0.99 | one-time |


### Hydro Buddy

[App page](https://appshunter.io/ios/app/hydro-buddy/id1532655368)

This app offers a straightforward way to monitor your daily water intake directly from your Apple Watch or iPhone. It prioritizes user privacy by not collecting sensitive health data, ensuring your information stays secure and under your control.

**Highlights:** Water intake tracking, Apple Watch integration, iPhone app, Privacy-focused, No health data collection

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is RHR Tracker for Watch free?

RHR Tracker for Watch is free to download, with in-app purchases available.

### Is Hydro Buddy free?

Hydro Buddy costs $0.99, with no in-app purchases.

### Which has better reviews, RHR Tracker for Watch or Hydro Buddy?

RHR Tracker for Watch is rated higher. RHR Tracker for Watch averages 5.0 out of 5 from 6 ratings, while Hydro Buddy averages 3.4 from 5 ratings.

### Do RHR Tracker for Watch or Hydro Buddy have ads?

Neither RHR Tracker for Watch nor Hydro Buddy shows ads.

### Which is updated more often, RHR Tracker for Watch or Hydro Buddy?

RHR Tracker for Watch ships an update every 37 months, and Hydro Buddy every 2 months. Most recently, RHR Tracker for Watch was updated on October 24, 2026 and Hydro Buddy on October 13, 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.*