# DPI - Dots per inch — Change DPI value of an image

> Utility to alter and save image DPI values. (iPhone/iPad app by Vitalij Schaefer.)

- Source: https://appshunter.io/ios/app/dpi-dots-per-inch/id1376445792 (this page in markdown: same URL + `.md`)
- Developer: [Vitalij Schaefer](https://appshunter.io/developer/393749449)
- Category: Photo & Video, Utilities
- Price: Free with in-app purchases
- Rating: 4.70/5 from 1,052 App Store ratings · 62 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 32 MB
- Languages: American English, Dutch, French (France), German (Germany), Italian, Japanese, Korean, European Portuguese, Russian, Chinese (Simplified, China) and 1 more
- Released: 2018-04-27
- Data updated: 2026-08-28
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/dpi-dots-per-inch/id1376445792/reviews.md

## What is DPI?

This app allows you to change the DPI value of an image.
The image with the changed DPI value can be saved as a new image, shared, emailed or printed.

## Key features

- Change image DPI
- Save modified image
- Share image
- Email image
- Print image

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $17.99 | one-time |


## What do users think of DPI?

Overall sentiment: neutral

**Pros**

- 👍 Easy to use
- 🚀 Cleans up projects nicely
- 💡 Fantastic for increasing image resolution for printing
- 👍 Great app
- 👍 Awesome one trick pony
- 👍 Fantastic app!
- 👍 Simple and easy to use
- 👍 I love it!!! It's a lifesaver
- 👍 Yes...the heavens!!
- 👍 Super Easy - Thank you!!!
- 👍 Great app. Easy to use
- 👍 Worth every penny

**Cons**

- 🐛 The app DOES NOT WORK as advertised
- 🐛 Darkened the original photo
- 🐛 Doesn't return PNG
- 💰 Too expensive at 18€
- 🌐 Doesn't work
- 🌐 Didn't change DPI
- 🌐 Doesn't actually work
- 🌐 Looks Like it Works but it doesn't
- 🌐 Not user friendly
- 🌐 Useless
- 🌐 Another worthless tool
- 🌐 Will be deleting this app as doesn't work!
- 🌐 No support either
- 🙈 Too many ads
- 🙈 Games pop up and won't get off screen

**Commonly reported bugs**

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

**Most requested features**

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

## Recent user reviews (10 of 62)

All indexed reviews: https://appshunter.io/ios/app/dpi-dots-per-inch/id1376445792/reviews.md

### 5/5 — Easy

*2026-02-05, version 6.0*

Very easy to us

### 1/5 — The App DOES NOT WORK as advertised!!!

*2025-12-31*

This app downloads your files and keeps them THE EXACT SAME SIZE as the original. It will not downsize my PNG images from 300 dpi to 72 dpi. While I like this developer’s Image Size App (though DPI and Image Size should be merged into a single app) this one is completely useless!

**Developer response:** Thank you for your feedback. The app only modifies the DPI value stored in the image metadata and does not change the image size.

### 5/5 — На фиг

*2025-11-13*

Это приложение останется с вами навсегда! Вы его не сможете удалить!

### 1/5 — Darkened the original photo

*2025-10-15, version 5.9*

I use both apps but upon paying £14.99 to remove ads I put in my photo only to find the image it threw out was darkened.  This is not good.  Unlike its pixel app it offers no delete initial photo.

### 2/5 — ByeByeDpi

*2025-07-30*

А почему не сохраняется?ни куда не возможно нажать,помогите,пожалуйста

### 1/5 — Nicht geklappt

*2025-05-22*

Wenn es so gute Bewertungen für diese APP gibt, muss ja funktionieren… aber wie? 😳

**Developer response:** Vielen Dank für Ihr Feedback. Dieser App speichert ein neues Bild mit dem von Ihnen eingegebenen DPI Wert. Es funktioniert ziemlich einfach. Öffnen Sie ein Bild, geben Sie den neuen DPI Wert ein und speichern Sie das neue Bild mit dem Pfeil nach unten Symbol.

### 5/5 — The Best Tool Ever

*2024-11-20*

Dots per inch, “DPI”, are so important for the highest quality printing possible.  The ability to increase the DPI on any image allows for the highest quality and detail printing possible.  Turns a really good image into a really great image.

### 3/5 — Too many ads

*2024-10-22*

The app is great but there are too many annoying ads!

### 4/5 — Does not return png

*2024-10-13, version 5.7*

The app used to return png but now gives only jpg
Please sort it out.

### 1/5 — 18€, sérieux ?

*2024-07-08, version 5.6*

Cette app me rendait service efficacement mais très ponctuellement. Malheureusement, les pubs devenant de plus en plus présentes, envahissantes voire oppressantes, j’ai voulu tout de même récompenser et aider le développeur, mais… 18€!!!!! Heuuuuuu, non.
Pour une opération qui se fait en un éclair sur n’importe quel logiciel de PC…

## Frequently asked questions about DPI

### What does this app do?

This application allows you to change the DPI (dots per inch) value of an image. After adjusting the DPI, you can save the modified image as a new file.

### What are the key features?

The primary feature is the ability to alter an image's DPI. Once changed, you can then save the image, share it with others, send it via email, or print it directly.

### How much does the app cost?

The app is free to download and use. It includes advertisements and offers in-app purchases, suggesting some features or an ad-free experience may be available for purchase.

### Can I use this app on my device?

While specific compatibility details are not provided, this is a mobile application designed for devices that can run Android apps, as indicated by its category and typical app store listings.

### What are common use cases for changing DPI?

Changing DPI is often done to prepare images for printing at specific sizes or resolutions, or to adjust how an image will appear on different displays. This app facilitates those adjustments.

## Version history (last 5 releases)

### 6.1 — 2026-05-27

Bug fixes and improvements

### 6.0 — 2025-11-12

Bug fixes and improvements

### 5.9 — 2025-09-02

Bug fixes and improvements

### 5.8 — 2025-02-17

Bug fixes and improvements

### 5.7 — 2024-08-29

Improved app stability by identifying and resolving potential crash causes.

## Apps similar to DPI

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Image Size](https://appshunter.io/ios/app/image-size/id670766542) | 4.7 (29,748) | Free | Photo & Video |
| [CropSize: Image Resizer Editor](https://appshunter.io/ios/app/cropsize-image-resizer-editor/id742846888) | 4.7 (411) | $5.99 | Photo & Video |
| [Image Size PRO](https://appshunter.io/ios/app/image-size-pro/id1058024591) | 4.7 (56) | $39.99 | Photo & Video |
| [Desqueeze PRO - Batch Resizer](https://appshunter.io/ios/app/desqueeze-pro-batch-resizer/id1163586180) | 4.6 (57) | $14.99 | Photo & Video |
| [Photo Compress - Resize Image](https://appshunter.io/ios/app/photo-compress-resize-image/id1541303492) | 4.1 (7) | $3.99 | Photo & Video |
| [Image Resizer - Photo Compress](https://appshunter.io/ios/app/image-resizer-photo-compress/id1573564366) | 4.6 (207) | Free | Photo & Video |

## More apps by Vitalij Schaefer

- [Image Size](https://appshunter.io/ios/app/image-size/id670766542)
- [Biometric Passport Photo](https://appshunter.io/ios/app/biometric-passport-photo/id759142884)
- [Blue Switch](https://appshunter.io/ios/app/blue-switch/id828280876)
- [Passport Photo - ID Photo](https://appshunter.io/ios/app/passport-photo-id-photo/id917389447)
- [Batch Resize](https://appshunter.io/ios/app/batch-resize/id917394599)
- [Photo Collage Maker & Printer](https://appshunter.io/ios/app/photo-collage-maker-and-printer/id917397212)

All apps by Vitalij Schaefer: https://appshunter.io/developer/393749449

## Related topics

[inches image](https://appshunter.io/ios/topics/inches-image) · [dpi converter](https://appshunter.io/ios/topics/dpi-converter) · [dpi](https://appshunter.io/ios/topics/dpi) · [resize image inch](https://appshunter.io/ios/topics/resize-image-inch) · [bye dpi](https://appshunter.io/ios/topics/bye-dpi) · [image quality change](https://appshunter.io/ios/topics/image-quality-change) · [pixelscale](https://appshunter.io/ios/topics/pixelscale) · [مخابز باب الاغا](https://appshunter.io/ios/topics/مخابز-باب-الاغا) · [lower resolution](https://appshunter.io/ios/topics/lower-resolution) · [pixels resolution](https://appshunter.io/ios/topics/pixels-resolution) · [image resolution](https://appshunter.io/ios/topics/image-resolution) · [dpi calculator](https://appshunter.io/ios/topics/dpi-calculator) · [bye bye dpi](https://appshunter.io/ios/topics/bye-bye-dpi) · [resolution](https://appshunter.io/ios/topics/resolution) · [bitmap](https://appshunter.io/ios/topics/bitmap) · [ppi guru](https://appshunter.io/ios/topics/ppi-guru) · [my dpi](https://appshunter.io/ios/topics/my-dpi) · [resolution changer](https://appshunter.io/ios/topics/resolution-changer) · [change image size](https://appshunter.io/ios/topics/change-image-size)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*