# PixelCalc vs addy.io

The clearest difference is price: addy.io at Free against PixelCalc's $2.99. addy.io also leads on review sentiment (81% vs 42%) and update cadence (every 3 weeks vs every 3 months). PixelCalc's advantage is in-app purchases (none vs 3) and iOS requirement (11.0 vs 17.0). On ads and device support there is nothing between them.

addy.io is free to download; PixelCalc costs $2.99 up front. addy.io sells 3 in-app purchases, starting at $3.99 per month. PixelCalc asks for nothing beyond the download.

PixelCalc ships an update every 3 months, addy.io every 3 weeks. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | PixelCalc | addy.io |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[4.7 (70 ratings)](https://appshunter.io/ios/app/addyio/id6563138633/reviews)** |
| Number of ratings | — | **70** |
| Positive reviews | 41.7% of reviews | **81.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 4 MB | 56 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [John Lullie](https://appshunter.io/developer/370571602) | [addy.io](https://appshunter.io/developer/1758544549) |

## What reviewers say

### PixelCalc

[App page](https://appshunter.io/ios/app/pixelcalc/id370571599)

This tool helps graphic designers and others convert image dimensions between pixels and inches at various resolutions. It also features a proportional calculator for accurate resizing and reference charts for print sizes and camera settings.

**Highlights:** Pixel to Inch conversion, Inch to Pixel conversion, Resolution adjustment, Proportional calculator for resizing, Print size reference charts, Camera shutter speed chart

**Features:** Vision Pro support

**In-app purchases:** none


### addy.io

[App page](https://appshunter.io/ios/app/addyio/id6563138633)

Manage your email aliases and recipients on the go with this sleek mobile application. Create new aliases, forward emails, and receive notifications for delivery issues. Securely access your account with biometric authentication.

**Highlights:** Create and manage email aliases, Forward emails from anywhere, Biometric app lock, Notifications for delivery issues, Alias management via Shortcuts and Siri, Widgets for quick access, WatchOS app for on-the-go management

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Plan (1 Month) | $3.99 | per month |
| Lite Plan (1 Year) | $13.49 | per year |
| Pro Plan (1 Year) | $39.99 | per year |


## Frequently asked questions

### Is PixelCalc free?

PixelCalc costs $2.99, with no in-app purchases.

### Is addy.io free?

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

### Do PixelCalc or addy.io have ads?

Neither PixelCalc nor addy.io shows ads.

### Which is updated more often, PixelCalc or addy.io?

PixelCalc ships an update every 3 months, and addy.io every 3 weeks. Most recently, PixelCalc was updated on October 8, 2026 and addy.io on October 11, 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.*