# Hydro Buddy vs Wrist Motion Tracker

The clearest difference is price: Wrist Motion Tracker at Free against Hydro Buddy's $0.99. Wrist Motion Tracker also leads on rating (5.0 vs 3.4) and iOS requirement (13.0 vs 27.0). Hydro Buddy's advantage is ratings volume (5 vs 1). On update cadence, ads, in-app purchases and device support there is nothing between them.

Wrist Motion Tracker is free to download; Hydro Buddy costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Wrist Motion Tracker holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: Hydro Buddy has 5 ratings behind it against 1, so its average is the more settled of the two.

Hydro Buddy ships an update every 2 months, Wrist Motion Tracker every 3 months. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Hydro Buddy | Wrist Motion Tracker |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.4 (5 ratings)](https://appshunter.io/ios/app/hydro-buddy/id1532655368/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/wrist-motion-tracker/id1621969190/reviews)** |
| Number of ratings | **5** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Paid | **Free** |
| Size | 1 MB | 1 MB |
| Requires iOS | 27.0 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPod, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Kronovi Corporation](https://appshunter.io/developer/1155745190) | [Bite Technologies, LLC](https://appshunter.io/developer/1263719775) |

## What reviewers say

### 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


### Wrist Motion Tracker

[App page](https://appshunter.io/ios/app/wrist-motion-tracker/id1621969190)

This application captures and logs motion data from your Apple Watch's sensors. It uploads the data to iCloud in a CSV format for easy analysis. A companion macOS app is required to retrieve and process the logged information.

**Highlights:** Apple Watch sensor data capture, iCloud CSV data upload, Health store authorization, macOS companion app integration, Research-focused data logging

**In-app purchases:** none


## Frequently asked questions

### Is Hydro Buddy free?

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

### Is Wrist Motion Tracker free?

Wrist Motion Tracker is free to download, with no in-app purchases.

### Which has better reviews, Hydro Buddy or Wrist Motion Tracker?

Wrist Motion Tracker is rated higher. Hydro Buddy averages 3.4 out of 5 from 5 ratings, while Wrist Motion Tracker averages 5.0 from 1 ratings.

### Do Hydro Buddy or Wrist Motion Tracker have ads?

Neither Hydro Buddy nor Wrist Motion Tracker shows ads.

### Which is updated more often, Hydro Buddy or Wrist Motion Tracker?

Hydro Buddy ships an update every 2 months, and Wrist Motion Tracker every 3 months. Most recently, Hydro Buddy was updated on October 13, 2026 and Wrist Motion Tracker on October 6, 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.*