# PredictWind Offshore Weather vs Tideglass

The clearest difference is update cadence: Tideglass at every 8 days against PredictWind Offshore Weather's monthly. PredictWind Offshore Weather's advantage is iOS requirement (15.4 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PredictWind Offshore Weather ships an update monthly, Tideglass every 8 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PredictWind Offshore Weather | Tideglass |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (41 ratings)](https://appshunter.io/ios/app/predictwind-offshore-weather/id1068677891/reviews)** | — |
| Number of ratings | **41** | — |
| Positive reviews | 54.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | Free | — |
| Size | 527 MB | 7 MB |
| Requires iOS | **15.4** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [PredictWind Limited](https://appshunter.io/developer/477048590) | [Ivan Shestakov](https://appshunter.io/developer/1896635616) |

## What reviewers say

### PredictWind Offshore Weather

[App page](https://appshunter.io/ios/app/predictwind-offshore-weather/id1068677891)

Access detailed offshore weather forecasts and marine tools for coastal and offshore passages. Download GRIB files, view weather routes, and utilize advanced marine data for safe and efficient navigation.

**Highlights:** Download GRIB files, View weather routes, Access forecast models, Marine tools, Weather routing, GPS tracking, AIS data

**Features:** Vision Pro support

**In-app purchases:** none


### Tideglass

[App page](https://appshunter.io/ios/app/tideglass/id6774728879)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PredictWind Offshore Weather free?

PredictWind Offshore Weather is free to download, with no in-app purchases.

### Is Tideglass free?

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

### Do PredictWind Offshore Weather or Tideglass have ads?

Neither PredictWind Offshore Weather nor Tideglass shows ads.

### Which is updated more often, PredictWind Offshore Weather or Tideglass?

PredictWind Offshore Weather ships an update monthly, and Tideglass every 8 days. Most recently, PredictWind Offshore Weather was updated on November 2, 2026 and Tideglass on October 31, 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.*