# HydroAI vs WaterTime

The clearest difference is update cadence: HydroAI at every 3 weeks against WaterTime's every 3 months. HydroAI also leads on iOS requirement (13.4 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. HydroAI sells 3 in-app purchases, starting at $9.99 per month and WaterTime sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

HydroAI ships an update every 3 weeks, WaterTime every 3 months. The most recent releases landed on October 20, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | HydroAI | WaterTime |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hydroai-hydration-tracker/id6676999718/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Freemium | — |
| Size | 58 MB | 25 MB |
| Requires iOS | **13.4** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Syncd Software LLC](https://appshunter.io/developer/1767900025) | [Deimante Valunaite](https://appshunter.io/developer/1798790461) |

## What reviewers say

### HydroAI

[App page](https://appshunter.io/ios/app/hydroai-hydration-tracker/id6676999718)

Effortlessly track your daily water intake and receive personalized reminders to stay hydrated. Simply answer a few questions about your goals, snap a photo of your drink, and view insightful progress reports. Achieve a healthier, more vibrant you with simple hydration management.

**Highlights:** AI-powered hydration analysis, Drink photo recognition, Personalized hydration goals, Progress tracking and insights, Customizable reminders, Effortless daily tracking

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $9.99 | per month |
| Pro Yearly | $46.90 | per year |
| Pro Yearly | $59.99 | per year |


### WaterTime

[App page](https://appshunter.io/ios/app/watertime-hydration-reminder/id6743364418)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Yearly Subscription | $12.99 | per year |


## Frequently asked questions

### Is HydroAI free?

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

### Is WaterTime free?

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

### Do HydroAI or WaterTime have ads?

Neither HydroAI nor WaterTime shows ads.

### Which is updated more often, HydroAI or WaterTime?

HydroAI ships an update every 3 weeks, and WaterTime every 3 months. Most recently, HydroAI was updated on October 20, 2026 and WaterTime on October 16, 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.*