# RiverApp vs Blue Liner Flows

The clearest difference is ratings volume: RiverApp at 5.5K against Blue Liner Flows's 42. RiverApp also leads on review sentiment (79% vs 64%). Blue Liner Flows's advantage is update cadence (weekly vs every 3 weeks). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. RiverApp sells 3 in-app purchases, starting at $0.99 per month and Blue Liner Flows sells 2 in-app purchases, starting at $6.99 per year. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for RiverApp against 4.7 for Blue Liner Flows. That said, the two scores are not equally well evidenced: RiverApp has 5.5K ratings behind it against 42, so its average is the more settled of the two. Written reviews are what separate them: 79% of RiverApp's written reviews are positive against 64% of Blue Liner Flows's.

RiverApp ships an update every 3 weeks, Blue Liner Flows weekly. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | RiverApp | Blue Liner Flows |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5.5K ratings)](https://appshunter.io/ios/app/riverapp-river-levels/id667012473/reviews)** | [4.7 (42 ratings)](https://appshunter.io/ios/app/blue-liner-flows/id6464350766/reviews) |
| Number of ratings | **5.5K** | 42 |
| Positive reviews | **79.3% of reviews** | 64.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#108** | #191 |
| Size | 56 MB | 4 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Florian Bessiere](https://appshunter.io/developer/667012476) | [Ryan Olson](https://appshunter.io/developer/605279068) |

## What reviewers say

### RiverApp

[App page](https://appshunter.io/ios/app/riverapp-river-levels/id667012473)

**Currently charting:** #108 Top Grossing · Weather, #134 Top Free · Weather (US App Store)

Access real-time water levels, flows, and temperatures for rivers worldwide. Ideal for sports enthusiasts and professionals, it offers detailed maps, navigability information, and customizable alerts for over 40,000 hydrometric stations.

**Highlights:** Real-time water levels and flows, Water temperatures, Hydrometric station maps, Customizable alerts, Whitewater course navigability, User-added hazards and courses

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - 1 month subscription | $0.99 | per month |
| Premium - 1 year subscription | $6.99 | per year |
| RiverApp Premium | $29.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🗺️ Comprehensive coverage of rivers
- 📊 Useful data and visualizations
- 🔔 Helpful alerts and notifications
- 💰 Affordable premium upgrade

**What reviewers complain about**

- 🐛 Occasional inaccurate or outdated information
- 🔍 Missing some important river gauges
- 💬 Lack of communication from developers
- 🗺️ Incorrect geographic information for some areas

**Reported bugs**

- Map feature not working due to internet connection issues
- Horizontal lines and color indicators disappearing from graphs
- Inconsistent or unreliable data updates

**Requested features**

- Add more river coverage, especially in underserved regions
- Improve forecast and prediction capabilities
- Implement a journaling or note-taking feature
- Allow for customizable alerts and notifications
- Add support for additional measurement units (e.g., millimeters)


### Blue Liner Flows

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

**Currently charting:** #191 Top Grossing · Weather (US App Store)

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 RiverApp free?

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

### Is Blue Liner Flows free?

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

### Which has better reviews, RiverApp or Blue Liner Flows?

RiverApp is rated higher. RiverApp averages 4.8 out of 5 from 5.5K ratings, while Blue Liner Flows averages 4.7 from 42 ratings.

### Do RiverApp or Blue Liner Flows have ads?

Neither RiverApp nor Blue Liner Flows shows ads.

### Which is updated more often, RiverApp or Blue Liner Flows?

RiverApp ships an update every 3 weeks, and Blue Liner Flows weekly. Most recently, RiverApp was updated on October 26, 2026 and Blue Liner Flows on October 25, 2026.

### Which is more popular, RiverApp or Blue Liner Flows?

RiverApp currently peaks at #108 in the App Store charts, and Blue Liner Flows at #191. Chart position reflects recent download velocity rather than total install base.

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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.*