# WatSen vs Avycast

The clearest difference is in-app purchases: WatSen at none against Avycast's 2. Avycast's advantage is update cadence (weekly vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Avycast sells 2 in-app purchases, starting at $2.99 per month. WatSen asks for nothing beyond the download.

WatSen ships an update fortnightly, Avycast weekly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | WatSen | Avycast |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 68.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free | — |
| Size | 17 MB | 36 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Artem Kislitsyn](https://appshunter.io/developer/1102786720) | [Mikhail Konkov](https://appshunter.io/developer/1886987523) |

## What reviewers say

### WatSen

[App page](https://appshunter.io/ios/app/watsen/id1244558907)

Monitor Black Sea water temperatures with real-time data. Utilizes automated buoys during summer and satellite imagery in colder months for comprehensive tracking.

**Highlights:** Black Sea water temperature tracking, Automated buoy stations, Satellite data display, Summer and winter monitoring, Real-time data

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

**In-app purchases:** none


### Avycast

[App page](https://appshunter.io/ios/app/avycast-avalanche-forecast/id6760953111)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Yearly | $14.99 | per year |


## Frequently asked questions

### Is WatSen free?

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

### Is Avycast free?

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

### Do WatSen or Avycast have ads?

Neither WatSen nor Avycast shows ads.

### Which is updated more often, WatSen or Avycast?

WatSen ships an update fortnightly, and Avycast weekly. Most recently, WatSen was updated on November 2, 2026 and Avycast 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.*