# Image Size PRO vs DPI

The clearest difference is price: DPI at Free against Image Size PRO's $59.99. DPI also leads on ratings volume (1.1K vs 56). Image Size PRO's advantage is review sentiment (100% vs 60%) and in-app purchases (none vs 1). On rating, device support and iOS requirement there is nothing between them.

DPI is free to download; Image Size PRO costs $59.99 up front. DPI sells 1 one-off in-app purchase. Image Size PRO asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Image Size PRO against 4.7 for DPI. That said, the two scores are not equally well evidenced: DPI has 1.1K ratings behind it against 56, so its average is the more settled of the two. Written reviews are what separate them: 100% of Image Size PRO's written reviews are positive against 60% of DPI's.

Image Size PRO ships an update fortnightly, DPI every 2 months. Both last shipped on September 24, 2026.

## The numbers

| Metric | Image Size PRO | DPI |
| --- | --- | --- |
| Price | $59.99 | **Free** |
| Rating | [4.7 (56 ratings)](https://appshunter.io/ios/app/image-size-pro/id1058024591/reviews) | [4.7 (1.1K ratings)](https://appshunter.io/ios/app/dpi-dots-per-inch/id1376445792/reviews) |
| Number of ratings | 56 | **1.1K** |
| Positive reviews | **100.0% of reviews** | 60.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 125 MB | 40 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vitalij Schaefer](https://appshunter.io/developer/393749449) | [Vitalij Schaefer](https://appshunter.io/developer/393749449) |

## What reviewers say

### Image Size PRO

[App page](https://appshunter.io/ios/app/image-size-pro/id1058024591)

Easily resize photos to your desired dimensions using various units like pixels, millimeters, centimeters, or inches. Preserve aspect ratio and crop images with intuitive gestures. Save, email, print, or share your resized creations.

**Highlights:** Resize images to custom dimensions, Support for pixels, millimeters, centimeters, inches, Preserve aspect ratio with chain icon, Crop images with multitouch gestures, Save, email, print, or share resized images, Ad-free and no in-app purchases

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

**In-app purchases:** none


### DPI

[App page](https://appshunter.io/ios/app/dpi-dots-per-inch/id1376445792)

Easily modify the DPI (dots per inch) of your images. Save, share, email, or print your adjusted photos with new DPI values.

**Highlights:** Change image DPI, Save modified image, Share image, Email image, Print image

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $34.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Cleans up projects nicely
- 💡 Fantastic for increasing image resolution for printing
- 👍 Great app
- 👍 Awesome one trick pony

**What reviewers complain about**

- 🐛 The app DOES NOT WORK as advertised
- 🐛 Darkened the original photo
- 🐛 Doesn't return PNG
- 💰 Too expensive at 18€
- 🌐 Doesn't work

**Reported bugs**

- Crashes when trying to look back in photos
- Doesn't handle large files, just crashes

**Requested features**

- Upload multiple images at a time
- Merge DPI and Image Size into a single app


## Frequently asked questions

### Is Image Size PRO free?

Image Size PRO costs $59.99, with no in-app purchases.

### Is DPI free?

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

### Which has better reviews, Image Size PRO or DPI?

Image Size PRO and DPI are both rated 4.7 out of 5 on the App Store, from 56 and 1.1K ratings respectively.

### Do Image Size PRO or DPI have ads?

DPI shows ads; Image Size PRO does not.

### Which is updated more often, Image Size PRO or DPI?

Image Size PRO ships an update fortnightly, and DPI every 2 months. Most recently, Image Size PRO was updated on September 24, 2026 and DPI on September 24, 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.*