Comparison

Pixel Density Calculator vs Perspective Pixels

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Pixel Density Calculator

Calculate the pixels per inch (PPI) or dots per inch (DPI) for any display. This tool helps determine screen resolution based on dimensions and pixel count, also calculating screen size, aspect ratio, and megapixels.

Highlights
  • Calculate Pixels Per Inch (PPI)
  • Calculate Dots Per Inch (DPI)
  • Determine screen size
  • Calculate aspect ratio
  • Megapixel count calculation
  • Shape preview
Features
Read full description

Pixel Density Calculator are used for calculating pixels per inch (PPI) or dots per inch (DPI) of any display based on its dimensions and the pixel count. PPI is a measure of pixel density or resolution of a monitors, smartphones, tablets, smart watches, computer screen, notebooks, television screen or other display device. Pixels per inch indicates how many pixels are in a 1 inch line on a display. Also calculated are screen size, screen width, screen height, aspect ratio and total number of megapixels. Calculation including shape preview. The formula to calculate PPI from diagonal: PPI = √(w² + h²)/d where: d – Diagonal screen size in inches. w – Number of pixels along the horizontal line. h – Number of pixels along the vertical line. Calculate the number of pixels that fit on the diagonal: d = √(w² + h²) where: w - Number of pixels along the horizontal line. h - Number of pixels along the vertical line. Then, calculate the PPI as the ratio between the number of pixels along the diagonal and the diagonal screen size: PPI = d/di where di is the diagonal screen size in inches. Pixels per Inch Quality value 120 PPI - Low 120-160 PPI - Medium 160-213 PPI - Medium High 213-240 PPI - High 240-320 PPI - eXtra High 320-480 PPI - eXtra x2 High 480-640 PPI - eXtra x3 High What is pixel density: Pixels per inch (PPI) are a measurement of the pixel density (resolution) of devices in various contexts: typically computer LCD or OLED displays, image scanners, and digital camera image sensors. The PPI of a computer display is related to the size of the display in inches and the total number of pixels in the horizontal and vertical directions. The PPI and DPI definitions are essentially equivalent. Dots per inch, or DPI, is comparable to pixels per inch. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

About

Perspective Pixels

This tool helps you understand and compare display specifications like PPI, PPD, and FOV. Input your monitor's details to see how they affect your viewing experience and explore UI scaling effects. Save and compare unlimited configurations with a clean, intuitive interface.

Highlights
  • Calculate PPI, PPD, and FOV
  • Explore UI scaling effects
  • Save and compare monitor configurations
  • Switch between metric and imperial units
  • Intuitive and user-friendly interface
Read full description

Ever wondered how your monitor's specs truly translate to your viewing experience? Perspective Pixels is a tool that makes it easy to understand and compare the technical details of displays. Whether you’re researching new monitors, comparing your work and home setups, or just curious about the numbers, input the specs to see the key metrics that define a display’s characteristics. Key Features: * Learn Key Metrics: Calculate and learn about Pixels Per Inch (PPI), Pixels Per Degree (PPD), and Field of View (FOV) for any screen. * Explore UI Scaling: See how operating system scaling affects a display's effective resolution and pixel density. * Save & Compare: Save an unlimited number of monitor configurations. Easily compare your current screen, a friend's setup, or that new monitor you're considering. * Metric & Imperial Units: Seamlessly switch between inches and centimeters for all measurements. * Clean & Intuitive Interface: A user-friendly design that makes complex specs simple to explore.

Screenshots

Pixel Density Calculator4 screens
Perspective Pixels4 screens

Verdict

The call

The clearest difference is price: Perspective Pixels at Free against Pixel Density Calculator's $2.99. Perspective Pixels also leads on update cadence (every 5 months vs every 38 months). Pixel Density Calculator's advantage is device support (3 vs 1) and iOS requirement (13 vs 18.0). On rating, ratings volume, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Perspective Pixels is free to download; Pixel Density Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Pixel Density Calculator against 5.0 for Perspective Pixels. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Pixel Density Calculator ships an update every 38 months, Perspective Pixels every 5 months. The most recent releases landed on September 9, 2026 and June 1, 2026 respectively.

Scorecard5 real differences · 4 level
Pixel Density Calculator versus Perspective Pixels: the parameters behind the verdict, then further details
ParameterPixel Density CalculatorPerspective Pixels
Price$2.99Free — better
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 38 monthsEvery 5 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13 — better18.0
Further details — not scored
Size3 MB3 MB
Age rating4+4+
DeveloperHeng Jia LiangRyan Himmelwright

Customer experience

Pixel Density Calculator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Perspective Pixels

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Pixel Density Calculator

No in-app purchases

None

Perspective Pixels

No in-app purchases

Questions

Is Pixel Density Calculator free?
Pixel Density Calculator costs $2.99, with no in-app purchases.
Is Perspective Pixels free?
Perspective Pixels is free to download, with no in-app purchases.
Which has better reviews, Pixel Density Calculator or Perspective Pixels?
Pixel Density Calculator and Perspective Pixels are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Pixel Density Calculator or Perspective Pixels have ads?
Neither Pixel Density Calculator nor Perspective Pixels shows ads.
Which is updated more often, Pixel Density Calculator or Perspective Pixels?
Pixel Density Calculator ships an update every 38 months, and Perspective Pixels every 5 months. Most recently, Pixel Density Calculator was updated on September 9, 2026 and Perspective Pixels on June 1, 2026.

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