# Conversion Calculator vs alertTO

The clearest difference is device support: Conversion Calculator at 3 against alertTO's —. On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Conversion Calculator sells 1 one-off in-app purchase and alertTO sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Conversion Calculator | alertTO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (157 ratings)](https://appshunter.io/ios/app/conversion-calculator-metric/id6468678523/reviews)** | — |
| Number of ratings | **157** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | — |
| Update frequency | Every 5 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 37 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad, Apple Watch** | — |
| Age rating | 4+ | 17+ |
| Developer | [Collins Cheruiyot](https://appshunter.io/developer/1579009978) | [Toby moktar](https://appshunter.io/developer/1531576098) |

## What reviewers say

### Conversion Calculator

[App page](https://appshunter.io/ios/app/conversion-calculator-metric/id6468678523)

Easily convert between metric and imperial units for weight, length, temperature, area, and time. This app offers precise, fast results with a clean interface, working offline for daily, travel, school, or work needs.

**Highlights:** Metric and imperial unit conversion, Weight, length, temperature, area, time, Offline functionality, Precise and fast results, Clean and minimal interface, Over 100 measurement types

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited access forever | $8.99 | one-time |


### alertTO

[App page](https://appshunter.io/ios/app/alertto/id6478510778)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| alertTO+ | $0.99 | per month |


## Frequently asked questions

### Is Conversion Calculator free?

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

### Is alertTO free?

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

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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.*