# Karl Weather vs BayCurrents

The clearest difference is in-app purchases: BayCurrents at none against Karl Weather's 8. BayCurrents also leads on rating (5.0 vs 4.6). Karl Weather's advantage is ratings volume (353 vs 5) and update cadence (every 2 months vs every 10 months). On price, ads and device support there is nothing between them.

Both are free to download. Karl Weather sells 8 in-app purchases, starting at $0.99 per month. BayCurrents asks for nothing beyond the download.

BayCurrents holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Karl Weather has 353 ratings behind it against 5, so its average is the more settled of the two.

Karl Weather ships an update every 2 months, BayCurrents every 10 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Karl Weather | BayCurrents |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (353 ratings)](https://appshunter.io/ios/app/karl-weather/id926601710/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/baycurrents/id1591997070/reviews)** |
| Number of ratings | **353** | 5 |
| Positive reviews | 59.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 10 months |
| Monetization | Subscription | **Free** |
| Size | 19 MB | 3 MB |
| Requires iOS | **13.2** | 17 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tapgods](https://appshunter.io/developer/906088534) | [Monterey Bay Aquarium Research Institute](https://appshunter.io/developer/997448509) |

## What reviewers say

### Karl Weather

[App page](https://appshunter.io/ios/app/karl-weather/id926601710)

Visualize San Francisco's microclimates and plan your day across the Bay Area. View current and forecasted temperatures on a dynamic heatmap, with detailed information available for any neighborhood. Includes air quality data and local news.

**Highlights:** 24-hour neighborhood forecasts, Bay Area city forecasts, Air Quality Index (AQI), Dynamic temperature heatmaps, Detailed neighborhood weather, Local San Francisco news

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Tip | $0.99 | per month |
| Annual Tip | $4.99 | per year |
| Small Tip | $0.99 | one-time |
| Medium Tip | $1.99 | one-time |
| Large Tip | $2.99 | one-time |
| Karl Weather Pro | $3.99 | one-time |
| Huge Tip | $5.99 | one-time |
| Massive Tip | $9.99 | one-time |

**What reviewers like**

- 👍 Great for SF microclimates
- 💡 Innovative concept for weather
- 👍 Helpful for planning outfits
- 👍 Accurate AQI during fires
- 👍 Good map view by neighborhood

**What reviewers complain about**

- 🐛 Inaccurate temperature readings
- 🐛 App crashes frequently
- 🐛 Ignores certain islands (Treasure Island)
- 🐛 Missing neighborhoods (Glen Park)
- 🐛 Lumps areas together (Marin/Sausalito)

**Reported bugs**

- App crashes when flipping to Bay Area temps
- Conditions seem broken (cloudy not updating)
- Temps have disappeared
- App stuck in night mode
- Weather readings are off by 5-10 degrees

**Requested features**

- Add Glen Park neighborhood
- Include Treasure Island/Yerba Buena Island
- Better coverage for Marin County microclimates
- Widget with top neighborhoods
- Neighborhood flair in SF/Bay Area


### 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 Karl Weather free?

Karl Weather 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, Karl Weather or BayCurrents?

BayCurrents is rated higher. Karl Weather averages 4.6 out of 5 from 353 ratings, while BayCurrents averages 5.0 from 5 ratings.

### Do Karl Weather or BayCurrents have ads?

Neither Karl Weather nor BayCurrents shows ads.

### Which is updated more often, Karl Weather or BayCurrents?

Karl Weather ships an update every 2 months, and BayCurrents every 10 months. Most recently, Karl Weather was updated on November 1, 2026 and BayCurrents 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.*