# River Levels & Flows vs Blue Liner Flows

The clearest difference is price: Blue Liner Flows at Free against River Levels & Flows's $2.99. Blue Liner Flows also leads on update cadence (weekly vs every 3 months). River Levels & Flows's advantage is in-app purchases (none vs 2) and ratings volume (2.7K vs 42). On rating, review sentiment, ads and device support there is nothing between them.

Blue Liner Flows is free to download; River Levels & Flows costs $2.99 up front. Blue Liner Flows sells 2 in-app purchases, starting at $6.99 per year. River Levels & Flows asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for River Levels & Flows against 4.7 for Blue Liner Flows. That said, the two scores are not equally well evidenced: River Levels & Flows has 2.7K ratings behind it against 42, so its average is the more settled of the two. Written reviews are what separate them: 59% of River Levels & Flows's written reviews are positive against 64% of Blue Liner Flows's.

River Levels & Flows ships an update every 3 months, Blue Liner Flows weekly. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | River Levels & Flows | Blue Liner Flows |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.6 (2.7K ratings)](https://appshunter.io/ios/app/river-levels-and-flows/id1508808963/reviews) | **[4.7 (42 ratings)](https://appshunter.io/ios/app/blue-liner-flows/id6464350766/reviews)** |
| Number of ratings | **2.7K** | 42 |
| Positive reviews | 59.2% of reviews | **64.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#39** | — |
| Size | 29 MB | 4 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 12+ | 4+ |
| Developer | [LW Brands, LLC](https://appshunter.io/developer/963599018) | [Ryan Olson](https://appshunter.io/developer/605279068) |

## What reviewers say

### River Levels & Flows

[App page](https://appshunter.io/ios/app/river-levels-and-flows/id1508808963)

**Currently charting:** #39 Top Paid · Weather (US App Store)

Access real-time USGS and AHPS river level and flow data, including flood status notifications. View weather prediction center charts for outlooks on precipitation and river flooding.

**Highlights:** USGS/AHPS river levels and flows, Flood status push notifications, Weather Prediction Center charts, Interactive gauge map, Gauge history and statistics

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Landscape mode for iPads
- 🚀 Excellent customer support
- 📊 Impressive data visualization
- 🔍 Useful for monitoring river levels
- 🔔 Helpful push notification feature

**What reviewers complain about**

- 🔍 Limited gauge coverage
- 🔢 Lack of customization options
- 📊 Inaccurate or outdated data
- 🤔 Overly complex for basic usage
- 💰 Poor value for the price

**Reported bugs**

- Saved gauges disappearing
- Inability to add desired gauge stations

**Requested features**

- Add more river gauge stations
- Allow sorting and organizing of favorite gauges
- Provide option to switch between USGS and NOAA data
- Implement customizable alert thresholds
- Add water temperature data


### Blue Liner Flows

[App page](https://appshunter.io/ios/app/blue-liner-flows/id6464350766)

Access detailed USGS and NOAA river flow data, including discharge, temperature, and gauge height. Explore rivers with an interactive map, set custom tags for organization, and receive alerts for condition changes. Plan your outdoor activities with integrated weather forecasts.

**Highlights:** River flow data (discharge, temperature, pH), Interactive map with directions, Customizable stream tagging, Real-time condition alerts, Home screen widgets, Integrated weather forecasts

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Annual Subscription | $6.99 | per year |
| Premium Lifetime Edition | $19.99 | one-time |


## Frequently asked questions

### Is River Levels & Flows free?

River Levels & Flows costs $2.99, with no in-app purchases.

### Is Blue Liner Flows free?

Blue Liner Flows is free to download, with in-app purchases available.

### Which has better reviews, River Levels & Flows or Blue Liner Flows?

Blue Liner Flows is rated higher. River Levels & Flows averages 4.6 out of 5 from 2.7K ratings, while Blue Liner Flows averages 4.7 from 42 ratings.

### Do River Levels & Flows or Blue Liner Flows have ads?

Neither River Levels & Flows nor Blue Liner Flows shows ads.

### Which is updated more often, River Levels & Flows or Blue Liner Flows?

River Levels & Flows ships an update every 3 months, and Blue Liner Flows weekly. Most recently, River Levels & Flows was updated on November 7, 2026 and Blue Liner Flows on November 3, 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.*