Metrify vs IO ∙ Converter & Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Metrify
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.
- Imperial to metric conversion
- Currency conversion
- Price comparison
- Supports cooking, shopping, travel
- Distraction-free design
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Metrify makes conversions effortless. Perfect for anyone in the US tired of Fahrenheit, miles, pounds, and tablespoons. Quickly switch to Celsius, kilometers, grams, or milliliters — just by typing them in. Why Metrify? - Convert imperial ↔ metric instantly - Works with everyday things: cooking, shopping, driving, traveling - Compare prices easily (gas, groceries, real estate) - Currency conversions + unit conversions in one app - Clean, fast, distraction-free design Stop struggling with conversions — let Metrify do the math. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
IO ∙ Converter & Calculator
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.
- 13 conversion categories
- Over 120 units supported
- Live currency exchange rates
- Integrated calculator
- Cross-platform availability (Apple devices)
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IO (Input/Output) is a powerful and simple multiplatform unit and currency converter. Features: ∙ 13 essential categories ∙ Over 120 different units ∙ Live currency updates ∙ Calculator functionality (on iPhone and iPad) ∙ Available on iPhone, iPad, Apple Watch and Mac ∙ No Ads
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Metrify | IO ∙ Converter & Calculator |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 3.9 (7 ratings) | 4.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | 33.3% of reviews — better |
| Number of ratings | 7 — better | 1 |
| Update frequency | Monthly — better | Every 5 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Freemium — better | Paid |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod, Mac, Apple Watch — better |
| Requires iOS | 17.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Tsuyoshi Niwa | Alex Codrington |
Customer experience
Metrify
IO ∙ Converter & Calculator
In-app purchases
Metrify
- Monthly Subscription1 Month trial$0.991 Month
- Yearly Subscription$9.991 Year
- Lifetime Pro$39.99
IO ∙ Converter & Calculator
No in-app purchases
Questions
Is Metrify free?
Is IO ∙ Converter & Calculator free?
Which has better reviews, Metrify or IO ∙ Converter & Calculator?
Do Metrify or IO ∙ Converter & Calculator have ads?
Which is updated more often, Metrify or IO ∙ Converter & Calculator?
Other comparisons
