# WellO2 vs Replenish

The clearest difference is iOS requirement: WellO2 at 12.0 against Replenish's 15.1. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | WellO2 | Replenish |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Monetization | — | Free |
| Size | 54 MB | 29 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [WellO2 Oy](https://appshunter.io/developer/1621277574) | [Souhail Zaki](https://appshunter.io/developer/1891993000) |

## What reviewers say

### WellO2

[App page](https://appshunter.io/ios/app/wello2/id1621277572)

**In-app purchases:** none


### Replenish

[App page](https://appshunter.io/ios/app/replenish-water-tracker/id6771159340)

This app helps you build a consistent water-drinking habit with a simple, quiet interface. It calculates your personal hydration goal and offers easy logging, with optional, non-intrusive reminders. Designed for focus and privacy, it keeps all your data on your device.

**Highlights:** Personalized daily hydration goal calculation, One-tap water logging, Friendly drop mascot visualizer, 30-day progress tracking, Optional customizable reminders, Light and dark mode

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

**In-app purchases:** none


## Frequently asked questions

### Is WellO2 free?

WellO2 is free to download, with no in-app purchases.

### Is Replenish free?

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

### Do WellO2 or Replenish have ads?

Neither WellO2 nor Replenish shows ads.

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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.*