# TerraWatch vs Comparecast

The clearest difference is in-app purchases: Comparecast at none against TerraWatch's 1. TerraWatch's advantage is update cadence (every 5 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. TerraWatch sells 1 one-off in-app purchase. Comparecast asks for nothing beyond the download.

TerraWatch ships an update every 5 days, Comparecast every 2 weeks. The most recent releases landed on September 21, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | TerraWatch | Comparecast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/comparecast-weather-models/id6771171777/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Monetization | — | Free |
| Size | 1 MB | 5 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Tolga Ulutas](https://appshunter.io/developer/1867266654) | [William Kirkpatrick](https://appshunter.io/developer/1608944971) |

## What reviewers say

### TerraWatch

[App page](https://appshunter.io/ios/app/terrawatch/id6762412658)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TerraWatch Pro | $2.99 | one-time |


### Comparecast

[App page](https://appshunter.io/ios/app/comparecast-weather-models/id6771171777)

This app displays forecasts from multiple independent weather models, allowing users to compare predictions and understand forecast uncertainty. It offers detailed hourly and 10-day forecasts, a live weather station map, and customizable units and locations.

**Highlights:** Seven independent forecast models side-by-side, Consensus card for model agreement, Interactive Compare chart, Hourly forecast details, 10-day forecasts with conditions, Live weather station map, Customizable units and locations

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

**In-app purchases:** none


## Frequently asked questions

### Is TerraWatch free?

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

### Is Comparecast free?

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

### Do TerraWatch or Comparecast have ads?

Neither TerraWatch nor Comparecast shows ads.

### Which is updated more often, TerraWatch or Comparecast?

TerraWatch ships an update every 5 days, and Comparecast every 2 weeks. Most recently, TerraWatch was updated on September 21, 2026 and Comparecast on September 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.*