# Calculee vs TerraWarn

The clearest difference is price: TerraWarn at Free against Calculee's $2.99. TerraWarn also leads on in-app purchases (none vs 1) and update cadence (every 2 weeks vs every 5 weeks). Calculee's advantage is ads (none vs shown) and iOS requirement (14.3 vs 16.4). On device support there is nothing between them.

TerraWarn is free to download; Calculee costs $2.99 up front. Calculee sells 1 one-off in-app purchase. TerraWarn asks for nothing beyond the download.

Calculee ships an update every 5 weeks, TerraWarn every 2 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Calculee | TerraWarn |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Size | 1 MB | 54 MB |
| Requires iOS | **14.3** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mikolaj Adamowicz](https://appshunter.io/developer/1448003183) | [mohamed oumaalla](https://appshunter.io/developer/6786382063) |

## What reviewers say

### Calculee

[App page](https://appshunter.io/ios/app/calculee/id1633369389)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Colors | $0.99 | one-time |


### TerraWarn

[App page](https://appshunter.io/ios/app/terrawarn-disaster-alerts/id6792949994)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculee free?

Calculee costs $2.99, and also offers in-app purchases.

### Is TerraWarn free?

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

### Do Calculee or TerraWarn have ads?

TerraWarn shows ads; Calculee does not.

### Which is updated more often, Calculee or TerraWarn?

Calculee ships an update every 5 weeks, and TerraWarn every 2 weeks. Most recently, Calculee was updated on November 3, 2026 and TerraWarn on November 5, 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.*