# Water Alert Pro vs SunMeter UV Level

The clearest difference is ads: SunMeter UV Level at none against Water Alert Pro's shown. SunMeter UV Level also leads on update cadence (every 2 months vs every 7 months). Water Alert Pro's advantage is device support (4 vs 2) and iOS requirement (15.6 vs 18.6). On price and in-app purchases there is nothing between them.

Both are free to download. Water Alert Pro sells 2 in-app purchases, starting at $1.99 per 6 months and SunMeter UV Level sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Water Alert Pro ships an update every 7 months, SunMeter UV Level every 2 months. The most recent releases landed on October 23, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Water Alert Pro | SunMeter UV Level |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (166 ratings)](https://appshunter.io/ios/app/water-alert-pro/id787142696/reviews)** | — |
| Number of ratings | **166** | — |
| Positive reviews | 78.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Subscription | — |
| Size | 38 MB | 27 MB |
| Requires iOS | **15.6** | 18.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [LINKLINKS LTD](https://appshunter.io/developer/600375781) | [Anton Zuev](https://appshunter.io/developer/521562103) |

## What reviewers say

### Water Alert Pro

[App page](https://appshunter.io/ios/app/water-alert-pro/id787142696)

This app helps you stay hydrated by reminding you to drink water throughout the day. It allows you to set custom goals, schedules, and track your intake with detailed logs and visual representations. It also integrates with Apple Health and offers various backup options.

**Highlights:** Daily water drinking goals, Customizable drinking schedule, Free reminding sounds and custom text, Log water intake with quantity and time, Visual logs and histograms, Apple Health integration, Cloud backup and restore options

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - 6 months | $1.99 | per 6 months |
| Pro Version | $19.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🔔 Helpful reminders
- 📊 Customizable settings
- 💧 Effective at increasing water intake
- ⏰ Convenient tracking

**What reviewers complain about**

- 🐛 Bugs with editing/deleting entries
- 📢 Intrusive ads
- 🔍 Unintuitive interface
- 🔋 Battery drain from notifications

**Reported bugs**

- Percentage counter displaying incorrect values
- Connectivity issues with Apple Watch
- Inability to delete or edit past entries

**Requested features**

- More customizable drink sizes
- Ability to set custom reminder sounds
- Improved Apple Watch integration
- Sync with Health app


### SunMeter UV Level

[App page](https://appshunter.io/ios/app/sunmeter-uv-level/id6772186790)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $24.99 | per year |


## Frequently asked questions

### Is Water Alert Pro free?

Water Alert Pro is free to download, with in-app purchases available.

### Is SunMeter UV Level free?

SunMeter UV Level is free to download, with in-app purchases available.

### Do Water Alert Pro or SunMeter UV Level have ads?

Water Alert Pro shows ads; SunMeter UV Level does not.

### Which is updated more often, Water Alert Pro or SunMeter UV Level?

Water Alert Pro ships an update every 7 months, and SunMeter UV Level every 2 months. Most recently, Water Alert Pro was updated on October 23, 2026 and SunMeter UV Level on October 31, 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.*