# PNW Current Atlas vs BayCurrents

The clearest difference is rating: BayCurrents at 5.0 against PNW Current Atlas's 3.5. BayCurrents also leads on in-app purchases (none vs 2). PNW Current Atlas's advantage is ratings volume (33 vs 5) and iOS requirement (9.0 vs 17). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. PNW Current Atlas sells 2 one-off in-app purchases. BayCurrents asks for nothing beyond the download.

BayCurrents holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: PNW Current Atlas has 33 ratings behind it against 5, so its average is the more settled of the two.

PNW Current Atlas ships an update every 11 months, BayCurrents every 10 months. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | PNW Current Atlas | BayCurrents |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (33 ratings)](https://appshunter.io/ios/app/pnw-current-atlas/id1456020312/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/baycurrents/id1591997070/reviews)** |
| Number of ratings | **33** | 5 |
| Positive reviews | 41.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 10 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 56 MB | 3 MB |
| Requires iOS | **9.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TinyOctopus, LLC](https://appshunter.io/developer/507385773) | [Monterey Bay Aquarium Research Institute](https://appshunter.io/developer/997448509) |

## What reviewers say

### PNW Current Atlas

[App page](https://appshunter.io/ios/app/pnw-current-atlas/id1456020312)

Access detailed current prediction charts for the Pacific Northwest, covering regions like the Juan de Fuca Strait and San Juan Islands. View any date or time within the current year with free yearly updates, and use the app offline.

**Highlights:** View past/future date/time predictions, Daylight savings time correction, Jump to 'Now' prediction, Swipe/tap to move through time, Zoomable prediction details, Offline functionality, Free yearly updates

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-Day Free Trial | Free | one-time |
| Current Atlas unlimited access | $19.99 | one-time |


### BayCurrents

[App page](https://appshunter.io/ios/app/baycurrents/id1591997070)

Visualize high-resolution surface currents in the San Francisco Bay. This app supports various maritime activities with data up to 48 hours in the future. It operates autonomously offline, using NOAA model data enhanced by radar and tidal observations.

**Highlights:** High-resolution surface current maps, 48-hour future forecasting, Offline autonomous operation, NOAA numerical model data, Supports recreational and professional maritime activities

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PNW Current Atlas free?

PNW Current Atlas is free to download, with in-app purchases available.

### Is BayCurrents free?

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

### Which has better reviews, PNW Current Atlas or BayCurrents?

BayCurrents is rated higher. PNW Current Atlas averages 3.5 out of 5 from 33 ratings, while BayCurrents averages 5.0 from 5 ratings.

### Do PNW Current Atlas or BayCurrents have ads?

Neither PNW Current Atlas nor BayCurrents shows ads.

### Which is updated more often, PNW Current Atlas or BayCurrents?

PNW Current Atlas ships an update every 11 months, and BayCurrents every 10 months. Most recently, PNW Current Atlas was updated on October 24, 2026 and BayCurrents on October 21, 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.*