# Tidevann vs Avalanche Forecast

The clearest difference is in-app purchases: Avalanche Forecast at none against Tidevann's 3. Avalanche Forecast also leads on device support (4 vs 1). Tidevann's advantage is update cadence (every 2 weeks vs monthly) and iOS requirement (18.0 vs 26.0). On price and ads there is nothing between them.

Both are free to download. Tidevann sells 3 in-app purchases, starting at $3.99 per month. Avalanche Forecast asks for nothing beyond the download.

Tidevann ships an update every 2 weeks, Avalanche Forecast monthly. The most recent releases landed on October 10, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Tidevann | Avalanche Forecast |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 12 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [ScratchMyTail](https://appshunter.io/developer/358139314) | [Jonas Follesoe](https://appshunter.io/developer/1613060789) |

## What reviewers say

### Tidevann

[App page](https://appshunter.io/ios/app/tidevann/id564181094)

Get accurate tide and ocean condition information for the Norwegian coast. Track tides, moon phases, and weather forecasts. Enhance your experience with premium features for extended forecasts and detailed ocean data.

**Highlights:** Real-time tide times, Ocean condition forecasts, Moon phase tracking, Location-based data, Extended forecasts (premium), Detailed water level data (premium), Fishing and surfing conditions (premium)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tidevann+ Månedlig | $3.99 | per month |
| Tidevann+ Årlig | $14.99 | per year |
| Full versjon uten reklame | $39.99 | one-time |


### Avalanche Forecast

[App page](https://appshunter.io/ios/app/avalanche-forecast/id1613060787)

**In-app purchases:** none


## Frequently asked questions

### Is Tidevann free?

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

### Is Avalanche Forecast free?

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

### Do Tidevann or Avalanche Forecast have ads?

Neither Tidevann nor Avalanche Forecast shows ads.

### Which is updated more often, Tidevann or Avalanche Forecast?

Tidevann ships an update every 2 weeks, and Avalanche Forecast monthly. Most recently, Tidevann was updated on October 10, 2026 and Avalanche Forecast on October 9, 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.*