# H2O vs Simple Hydration Tracker

The clearest difference is rating: Simple Hydration Tracker at 5.0 against H2O's 4.3. Simple Hydration Tracker also leads on update cadence (every 4 weeks vs every 4 months) and review sentiment (100% vs 86%). H2O's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Simple Hydration Tracker sells 2 in-app purchases, starting at $1.49 per month. H2O asks for nothing beyond the download.

Simple Hydration Tracker holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: H2O has 80 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 86% of H2O's written reviews are positive against 100% of Simple Hydration Tracker's.

H2O ships an update every 4 months, Simple Hydration Tracker every 4 weeks. The most recent releases landed on October 20, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | H2O | Simple Hydration Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (80 ratings)](https://appshunter.io/ios/app/h2o-water-tracker/id1161140846/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/simple-hydration-tracker/id6447656377/reviews)** |
| Number of ratings | **80** | 1 |
| Positive reviews | 86.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 4 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 41 MB | 51 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Lunarbits LLC](https://appshunter.io/developer/6799532918) | [NAOYA ONO](https://appshunter.io/developer/1530328146) |

## What reviewers say

### H2O

[App page](https://appshunter.io/ios/app/h2o-water-tracker/id1161140846)

This application helps you monitor your daily water consumption to ensure you stay adequately hydrated. It offers a visually appealing interface with features for quickly logging intake and reviewing your progress.

**Highlights:** Log water intake quickly, Preset water amounts, Weekly intake graph, Full history of entries, HealthKit integration, Intuitive interface

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and intuitive interface
- 💰 Free to use
- 🚫 Ad-free experience
- ✨ Clean and minimalist design
- 🚀 Quick and easy logging

**What reviewers complain about**

- 🐛 App crashes when accessing settings
- 🐛 App shuts off when accessing settings
- 🐛 Graph feature not working
- 💡 Missing reminder notifications
- 💡 Cannot edit previous day's entries

**Reported bugs**

- App crashes when accessing settings
- App shuts off when accessing settings
- Graph feature not working
- App closes when goal is reached
- Glitches when reaching goal

**Requested features**

- Add reminder notifications
- Allow editing of previous day's entries
- Add metric units (ml/L)
- Add widget support
- Add export to HealthKit option


### Simple Hydration Tracker

[App page](https://appshunter.io/ios/app/simple-hydration-tracker/id6447656377)

Easily log your daily water intake by selecting beverages, amounts, and times. Review your hydration habits with weekly and monthly charts. Add past entries and customize drink options for a stress-free experience.

**Highlights:** Easy drink logging, Add past entries, Weekly/monthly analysis charts, Customizable drink list, No login required

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan | $1.49 | per month |
| Support Developer | $0.99 | one-time |


## Frequently asked questions

### Is H2O free?

H2O is free to download, with no in-app purchases.

### Is Simple Hydration Tracker free?

Simple Hydration Tracker is free to download, with in-app purchases available.

### Which has better reviews, H2O or Simple Hydration Tracker?

Simple Hydration Tracker is rated higher. H2O averages 4.3 out of 5 from 80 ratings, while Simple Hydration Tracker averages 5.0 from 1 ratings.

### Do H2O or Simple Hydration Tracker have ads?

Simple Hydration Tracker shows ads; H2O does not.

### Which is updated more often, H2O or Simple Hydration Tracker?

H2O ships an update every 4 months, and Simple Hydration Tracker every 4 weeks. Most recently, H2O was updated on October 20, 2026 and Simple Hydration Tracker on October 5, 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.*