# Flume Water vs Flex

The clearest difference is rating: Flume Water at 4.7 against Flex's 3.0. Flume Water also leads on ratings volume (1.7K vs 4). Flex's advantage is in-app purchases (none vs 2) and iOS requirement (9.3 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Flume Water sells 2 in-app purchases, starting at $49.99 per year. Flex asks for nothing beyond the download.

Flume Water holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Flume Water has 1.7K ratings behind it against 4, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on October 29, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Flume Water | Flex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.7K ratings)](https://appshunter.io/ios/app/flume-water/id1117135447/reviews)** | [3.0 (4 ratings)](https://appshunter.io/ios/app/flex-link-s2/id1437594609/reviews) |
| Number of ratings | **1.7K** | 4 |
| Positive reviews | 58.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 56 MB | 21 MB |
| Requires iOS | 15.0 | **9.3** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Flume, Inc.](https://appshunter.io/developer/1117135446) | [LinkCom Manufacturing Co., Ltd.](https://appshunter.io/developer/1287465139) |

## What reviewers say

### Flume Water

[App page](https://appshunter.io/ios/app/flume-water/id1117135447)

Monitor and manage your home's water usage with real-time data and leak detection. This app helps you understand your consumption, set budgets, and receive alerts to prevent costly water damage.

**Highlights:** Real-time water usage data, Leak detection and alerts, Water consumption budgeting, Household water use analysis, Easy self-installation

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flume Insight | $49.99 | per year |
| Flume Insight | $49.99 | one-time |

**What reviewers like**

- 🚀 Easy installation and setup
- 🔒 Accurate water usage monitoring
- 👍 Helpful for detecting leaks
- 👍 Detailed water usage data and insights
- 👍 Responsive customer support

**What reviewers complain about**

- 🐛 Connectivity issues and unreliable notifications
- 🔋 Short battery life and expensive replacement
- 👎 Clunky and unintuitive app interface
- 🔒 Privacy concerns with data collection
- 👎 Recurring issues after firmware updates

**Reported bugs**

- App freezes and crashes
- Inaccurate water usage reporting
- Calibration issues after battery replacement
- Delayed or missed leak notifications

**Requested features**

- Landscape mode support for tablets
- Integration with smart home platforms
- Customizable notification settings
- Ability to manually train the system
- Enhanced data export and analysis tools


### Flex

[App page](https://appshunter.io/ios/app/flex-link-s2/id1437594609)

This application allows you to customize the colors and hues of your lighting system. Enhance any environment with a spectrum of bold colors, warm tones, and custom shades, bringing your creative vision to life.

**Highlights:** Control lighting colors, Customize hues and tones, Enhance lighting environments, Creative color application

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flume Water free?

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

### Is Flex free?

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

### Which has better reviews, Flume Water or Flex?

Flume Water is rated higher. Flume Water averages 4.7 out of 5 from 1.7K ratings, while Flex averages 3.0 from 4 ratings.

### Do Flume Water or Flex have ads?

Neither Flume Water nor Flex shows ads.

### Which is updated more often, Flume Water or Flex?

Flume Water ships an update every 6 weeks, and Flex every 6 weeks. Most recently, Flume Water was updated on October 29, 2026 and Flex on October 2, 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.*