# Metrify vs IO ∙ Converter & Calculator

The clearest difference is price: Metrify at Free against IO ∙ Converter & Calculator's $0.99. Metrify also leads on update cadence (monthly vs every 5 months) and ratings volume (7 vs 1). IO ∙ Converter & Calculator's advantage is in-app purchases (none vs 3) and ads (none vs shown). On rating there is nothing between them.

Metrify is free to download; IO ∙ Converter & Calculator costs $0.99 up front. Metrify sells 3 in-app purchases, starting at $0.99 per month. IO ∙ Converter & Calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.9 for Metrify against 4.0 for IO ∙ Converter & Calculator. That said, the two scores are not equally well evidenced: Metrify has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 0% of Metrify's written reviews are positive against 33% of IO ∙ Converter & Calculator's.

Metrify ships an update monthly, IO ∙ Converter & Calculator every 5 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Metrify | IO ∙ Converter & Calculator |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [3.9 (7 ratings)](https://appshunter.io/ios/app/metrify/id975992317/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/io-converter-and-calculator/id1668857713/reviews)** |
| Number of ratings | **7** | 1 |
| Positive reviews | 0.0% of reviews | **33.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | **Freemium** | Paid |
| Size | 8 MB | 1 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | **iPhone, iPad, iPod, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Tsuyoshi Niwa](https://appshunter.io/developer/888556976) | [Alex Codrington](https://appshunter.io/developer/358228521) |

## What reviewers say

### Metrify

[App page](https://appshunter.io/ios/app/metrify/id975992317)

Effortlessly convert between imperial and metric units, and currencies, with this clean and fast utility. Ideal for everyday tasks like cooking, shopping, and travel, it simplifies comparisons and calculations.

**Highlights:** Imperial to metric conversion, Currency conversion, Price comparison, Supports cooking, shopping, travel, Distraction-free design

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Yearly Subscription | $9.99 | per year |
| Lifetime Pro | $39.99 | one-time |


### IO ∙ Converter & Calculator

[App page](https://appshunter.io/ios/app/io-converter-and-calculator/id1668857713)

This utility app offers a comprehensive solution for unit and currency conversions, featuring live currency updates and a built-in calculator. It supports a wide range of units across multiple categories and is available on various Apple platforms.

**Highlights:** 13 conversion categories, Over 120 units supported, Live currency exchange rates, Integrated calculator, Cross-platform availability (Apple devices)

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

**In-app purchases:** none


## Frequently asked questions

### Is Metrify free?

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

### Is IO ∙ Converter & Calculator free?

IO ∙ Converter & Calculator costs $0.99, with no in-app purchases.

### Which has better reviews, Metrify or IO ∙ Converter & Calculator?

IO ∙ Converter & Calculator is rated higher. Metrify averages 3.9 out of 5 from 7 ratings, while IO ∙ Converter & Calculator averages 4.0 from 1 ratings.

### Do Metrify or IO ∙ Converter & Calculator have ads?

Metrify shows ads; IO ∙ Converter & Calculator does not.

### Which is updated more often, Metrify or IO ∙ Converter & Calculator?

Metrify ships an update monthly, and IO ∙ Converter & Calculator every 5 months. Most recently, Metrify was updated on November 6, 2026 and IO ∙ Converter & Calculator on November 3, 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.*