# Hydrator vs SMI Trening Centar

The clearest difference is in-app purchases: SMI Trening Centar at none against Hydrator's 3. Hydrator's advantage is ads (none vs shown) and update cadence (every 4 days vs every 10 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Hydrator sells 3 in-app purchases, starting at $0.99 per month. SMI Trening Centar asks for nothing beyond the download.

Hydrator ships an update every 4 days, SMI Trening Centar every 10 days. The most recent releases landed on August 28, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Hydrator | SMI Trening Centar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (4 ratings)](https://appshunter.io/ios/app/hydrator-smart-hydration/id6751470498/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 10 days |
| Monetization | Freemium | — |
| Size | 71 MB | 59 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Jonathan Terry](https://appshunter.io/developer/1372094093) | [TEAM TECH DOO](https://appshunter.io/developer/1713361950) |

## What reviewers say

### Hydrator

[App page](https://appshunter.io/ios/app/hydrator-smart-hydration/id6751470498)

This app helps you effortlessly stay hydrated with personalized reminders and easy drink tracking. Set custom goals, monitor your progress, and sync with health platforms for a complete wellness experience.

**Highlights:** Personalized water goals, Smart, adaptive reminders, Easy logging for all beverages, Streaks and badges for motivation, Apple Health and Google Fit integration, Distraction-free design

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hydrator Pro - Monthly | $0.99 | per month |
| Hydrator Pro - Yearly | $9.99 | per year |
| Hydrator Pro Perpetual | Free | one-time |


### SMI Trening Centar

[App page](https://appshunter.io/ios/app/smi-trening-centar/id6754639021)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hydrator free?

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

### Is SMI Trening Centar free?

SMI Trening Centar is free to download, with no in-app purchases.

### Do Hydrator or SMI Trening Centar have ads?

SMI Trening Centar shows ads; Hydrator does not.

### Which is updated more often, Hydrator or SMI Trening Centar?

Hydrator ships an update every 4 days, and SMI Trening Centar every 10 days. Most recently, Hydrator was updated on August 28, 2026 and SMI Trening Centar on September 18, 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.*