# WaterTime vs HydraFlow

The clearest difference is in-app purchases: HydraFlow at none against WaterTime's 2. HydraFlow also leads on iOS requirement (17.0 vs 26.0). WaterTime's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. WaterTime sells 2 in-app purchases, starting at $1.99 per month. HydraFlow asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | WaterTime | HydraFlow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | Every 3 months |
| Size | 25 MB | 5 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Deimante Valunaite](https://appshunter.io/developer/1798790461) | [SADIK SAZDAGI](https://appshunter.io/developer/1883520486) |

## What reviewers say

### 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 |


### HydraFlow

[App page](https://appshunter.io/ios/app/hydraflow-water-tracker/id6760320407)

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

**In-app purchases:** none


## Frequently asked questions

### Is WaterTime free?

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

### Is HydraFlow free?

HydraFlow is free to download, with no in-app purchases.

### Do WaterTime or HydraFlow have ads?

HydraFlow shows ads; WaterTime does not.

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

WaterTime ships an update every 3 months, and HydraFlow every 3 months. Most recently, WaterTime was updated on October 16, 2026 and HydraFlow on October 24, 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.*