# WaterWhale vs NutZero

The clearest difference is in-app purchases: WaterWhale at none against NutZero's 3. WaterWhale also leads on iOS requirement (13.0 vs 15.1). NutZero's advantage is ads (none vs shown). On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for WaterWhale against 5.0 for NutZero. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

WaterWhale ships an update every 10 days, NutZero every 5 days. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | WaterWhale | NutZero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/waterwhale/id6753785800/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/nutzero/id6759185459/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | **Every 5 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 31 MB | 45 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Jisoo Kim](https://appshunter.io/developer/1505195373) | [Sujan Anand](https://appshunter.io/developer/1869018850) |

## What reviewers say

### WaterWhale

[App page](https://appshunter.io/ios/app/waterwhale/id6753785800)

This app helps you build a healthy hydration habit with simple tracking and smart reminders. It offers personalized notifications, insightful statistics, and two distinct display modes for a flexible and intuitive user experience. All data is stored locally for enhanced privacy.

**Highlights:** Easy water logging with quick-add buttons, No account sign-up required, local data storage, Smart, personalized hydration reminders, Insightful statistics and streak tracking, Two display modes: Simple and Whale, Custom units and personalized daily goals, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### NutZero

[App page](https://appshunter.io/ios/app/nutzero/id6759185459)

This app helps you overcome unwanted habits and cultivate self-discipline. Track your daily progress and build focus through consistent effort. Achieve greater control and confidence with a clean, distraction-free interface.

**Highlights:** Break unwanted habits, Build self-discipline, Daily streak tracking, Monitor progress, Strengthen focus, Distraction-free experience

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NutZero Premium Monthly | $0.99 | per month |
| NutZero Premium Yearly | $12.99 | per year |
| Nut Zero Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is WaterWhale free?

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

### Is NutZero free?

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

### Which has better reviews, WaterWhale or NutZero?

WaterWhale and NutZero are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do WaterWhale or NutZero have ads?

WaterWhale shows ads; NutZero does not.

### Which is updated more often, WaterWhale or NutZero?

WaterWhale ships an update every 10 days, and NutZero every 5 days. Most recently, WaterWhale was updated on October 8, 2026 and NutZero on October 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*