# HydraZen vs SympTrack AI

The clearest difference is rating: SympTrack AI at 5.0 against HydraZen's 4.7. SympTrack AI also leads on iOS requirement (15.6 vs 17). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. HydraZen sells 4 in-app purchases, starting at $1.99 per month and SympTrack AI sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

SympTrack AI holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 14 and 5 respectively.

HydraZen ships an update fortnightly, SympTrack AI weekly. The most recent releases landed on October 24, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | HydraZen | SympTrack AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (14 ratings)](https://appshunter.io/ios/app/hydrazen-water-track-reminder/id6746745685/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/symptrack-ai/id6748820634/reviews)** |
| Number of ratings | **14** | 5 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Freemium | Freemium |
| Size | 27 MB | 137 MB |
| Requires iOS | 17 | **15.6** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [MefjuDev LLC](https://appshunter.io/developer/1777787735) | [Noah Erdahl](https://appshunter.io/developer/1827459561) |

## What reviewers say

### HydraZen

[App page](https://appshunter.io/ios/app/hydrazen-water-track-reminder/id6746745685)

This app helps you build healthy hydration habits with smart reminders and intuitive tracking. Log various drinks, monitor your progress with visual reports, and stay motivated with streaks. It offers a clean interface for daily wellness.

**Highlights:** Log water and other beverages, Smart and custom hydration reminders, Daily, weekly, and monthly progress reports, Motivating visual streaks and stats, Clean and modern user interface, Supports multiple beverages with different hydration levels

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Weekly | $1.99 | per 7 days |
| Yearly | $19.99 | per year |
| HydraZen Pro | $24.99 | one-time |


### SympTrack AI

[App page](https://appshunter.io/ios/app/symptrack-ai/id6748820634)

This app allows users to privately log and monitor medication side effects. It uses AI to detect patterns and trends in your symptoms over time, helping you understand how medications are affecting you. Designed for ease of use, it offers smart reminders and organized logs.

**Highlights:** Anonymous symptom logging, AI-powered trend detection, Smart daily reminders, Auto-sorted symptom logs, Clean and fast interface

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SympTrack AI Premium | $2.99 | per month |
| SympTrack AI Premium | $29.99 | per year |


## Frequently asked questions

### Is HydraZen free?

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

### Is SympTrack AI free?

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

### Which has better reviews, HydraZen or SympTrack AI?

SympTrack AI is rated higher. HydraZen averages 4.7 out of 5 from 14 ratings, while SympTrack AI averages 5.0 from 5 ratings.

### Do HydraZen or SympTrack AI have ads?

Neither HydraZen nor SympTrack AI shows ads.

### Which is updated more often, HydraZen or SympTrack AI?

HydraZen ships an update fortnightly, and SympTrack AI weekly. Most recently, HydraZen was updated on October 24, 2026 and SympTrack AI on September 26, 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.*