# PPI Calc - DPI Calculator — for displays with square pixel > Calculates display pixel density (PPI) and explains related concepts. (iPhone/iPad app by AppNextDoor Labs.) - Source: https://appshunter.io/ios/app/ppi-calc-dpi-calculator/id1463803742 (this page in markdown: same URL + `.md`) - Developer: [AppNextDoor Labs](https://appshunter.io/developer/1041729267) - Category: Utilities, Productivity - Price: Free (on sale, was $0.99) - Rating: 4.50/5 from 66 App Store ratings · 21 written reviews indexed - Age rating: 4+ - Requires: iOS 10.0 · 24 MB - Languages: American English - Released: 2019-05-16 - Data updated: 2026-08-30 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/ppi-calc-dpi-calculator/id1463803742/reviews.md ## What is PPI Calc? This PPI calculator (pixels per inch calculator) finds the resolution of your display based on its dimensions and the pixel count. In this app, we will teach you what is PPI, explore the differences between PPI vs DPI through the DPI definition. Also, you can find some comments on the dot pitch definition and its decline in usage. Of course, this is a calculator so we'll show you how to calculate PPI and how to categorize resolution based on PPI. PPI definition: What is PPI? PPI is a widely used acronym in tech forums on the Internet, especially those focused on display technology and smartphones. The technical PPI definition is Pixels Per Inch, and it represents a measurement of the pixel density of a screen or a digital image. The density is measured as the number of pixels that fit on a 1 inch line, hence the name. This measurement is based on the fact that screens and images, despite being 2D, have generally the same density along any of the two main axes. There are other measurements of pixels density, such as pixel per square inch, that involve calculating the area of a rectangle that is the screen. Also worth mentioning is the fact that our pixel density calculator assumes square pixels. It is important to note that for calculating PPI we need something that has a physical size, not a virtual file. For example, a screen or a printed picture has a fixed physical size so it makes sense to calculate how many pixels per inch there are in such an object. However, when we're talking about a digital image in a computer, PPI cannot be computed since the digital image varies in size depending on the level of zoom, the size of the screen, etc. ## Key features - Calculate PPI from dimensions and pixel count - Learn PPI definition - Understand PPI vs DPI - Explore dot pitch definition - Categorize resolution by PPI ## Recent user reviews (10 of 21) All indexed reviews: https://appshunter.io/ios/app/ppi-calc-dpi-calculator/id1463803742/reviews.md ### 5/5 — Emo free *2025-11-30, version 1.0.0* PA ### 5/5 — Lakki 007 *2025-11-14, version 1.0.0* Lakki 007 ### 5/5 — Hacks doble hito NP *2025-11-10, version 1.0.0* A tu apuntado ### 5/5 — Ro *2025-11-08, version 1.0.0* Shana ### 4/5 — 1600 *2025-10-24, version 1.0.0* 900 ### 5/5 — Huhb *2025-09-29, version 1.0.0* Jibbnn ### 4/5 — Modff *2025-09-11, version 1.0.0* Free Fire mod skins ### 4/5 — I am bored *2025-08-08* Free Fire ### 5/5 — ល្អ *2025-08-04, version 1.0.0* Tome ### 5/5 — Not *2025-03-25* Not work ## Frequently asked questions about PPI Calc ### What is PPI Calc? PPI Calc is a utility app that helps you calculate your display's pixel density (PPI) based on its physical dimensions and pixel count. It also provides educational content about PPI and DPI. ### How does PPI Calc work? You input the physical dimensions of your display and its pixel count, and the app calculates the Pixels Per Inch (PPI). It assumes square pixels for its calculations. ### What is the difference between PPI and DPI according to PPI Calc? PPI Calc explains that PPI (Pixels Per Inch) measures the pixel density of a screen or digital image, while DPI (Dots Per Inch) is often used in printing. The app explores these differences and definitions. ### Can PPI Calc calculate PPI for digital images? No, PPI Calc specifies that it is important to note that for calculating PPI, something that has a physical size is needed. Digital images on a computer cannot have their PPI computed as their size varies with zoom and screen size. ### What devices is PPI Calc available on? PPI Calc is available for iPhone and iPod devices. It is designed for users who need to understand display specifications on these platforms. ### Is PPI Calc free to use? Yes, PPI Calc is available for free. There are no in-app purchases or advertisements, making it a completely free utility for users. ### How often is PPI Calc updated? PPI Calc was last updated on May 16, 2019, with version 1.0.0. As of the latest information, there have been no subsequent updates. ### What is the age rating for PPI Calc? PPI Calc has an age rating of 4+. This indicates it is suitable for users of all ages and does not contain content inappropriate for children. ## Version history (last 1 release) ### 1.0.0 — 2019-05-16 No release notes. ## Apps similar to PPI Calc | App | Rating | Price | Category | | --- | --- | --- | --- | | [Sensi Elite](https://appshunter.io/ios/app/sensi-elite/id6749011200) | — | Free | Utilities | | [Goxit FF - Sensi Pro](https://appshunter.io/ios/app/goxit-ff-sensi-pro/id6755193557) | 4.0 (43) | Free | Utilities | | [Game Aim Converter: Sensi Pro](https://appshunter.io/ios/app/game-aim-converter-sensi-pro/id1618000036) | 4.0 (125) | Free | Utilities | | [Mouse Easy](https://appshunter.io/ios/app/mouse-easy/id1260525725) | 1.5 (4) | Free | Utilities | | [FFH Quatro](https://appshunter.io/ios/app/ffh-quatro/id6752125821) | 4.6 (53) | Free | Utilities | | [Val Crosshair Generator](https://appshunter.io/ios/app/val-crosshair-generator/id1617505902) | 1.9 (58) | Free | Utilities | ## More apps by AppNextDoor Labs - [Car Loan Calculator Tools](https://appshunter.io/ios/app/car-loan-calculator-tools/id1041729268) - [Whatever - Help you make a decision when you can't](https://appshunter.io/ios/app/whatever-help-you-make-a-decision-when-you-cant/id1099973140) - [Expiry Reminder](https://appshunter.io/ios/app/expiry-reminder/id1231732904) - [Calories Intake Calculator](https://appshunter.io/ios/app/calories-intake-calculator/id1247109733) - [BMI with Weight Expectations](https://appshunter.io/ios/app/bmi-with-weight-expectations/id1260464938) - [Poo Diary](https://appshunter.io/ios/app/poo-diary/id1265067301) All apps by AppNextDoor Labs: https://appshunter.io/developer/1041729267 ## Related topics [ppi calc](https://appshunter.io/ios/topics/ppi-calc) · [ppi calculator](https://appshunter.io/ios/topics/ppi-calculator) · [ppl calc](https://appshunter.io/ios/topics/ppl-calc) · [dpi calculator](https://appshunter.io/ios/topics/dpi-calculator) · [pixels resolution](https://appshunter.io/ios/topics/pixels-resolution) · [pixel density calculator](https://appshunter.io/ios/topics/pixel-density-calculator) · [ppi guru](https://appshunter.io/ios/topics/ppi-guru) · [dpi free fire](https://appshunter.io/ios/topics/dpi-free-fire) · [ppi](https://appshunter.io/ios/topics/ppi) · [dpi](https://appshunter.io/ios/topics/dpi) · [dpi calculator by fefercode](https://appshunter.io/ios/topics/dpi-calculator-by-fefercode) · [my dpi](https://appshunter.io/ios/topics/my-dpi) · [pt bright pixel labs](https://appshunter.io/ios/topics/pt-bright-pixel-labs) · [resolution screen](https://appshunter.io/ios/topics/resolution-screen) · [dpl](https://appshunter.io/ios/topics/dpl) · [ppi2pass](https://appshunter.io/ios/topics/ppi2pass) · [kaplan ppi](https://appshunter.io/ios/topics/kaplan-ppi) --- *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 2026-08-30.*