Comparison

Pixel Density Calculator vs BAP String Building Guide

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

BAP String Building Guide

Features
Read full description

BAP String building app. The #1 app for all your string building needs. This app helps to determine the correct layout measurements needed for any string being made. Built in conjunction with Baker Archery Products. The app also includes a customizable database of Bow manufacture string measurements that you can build out and search.

Screenshots

Pixel Density Calculator4 screens
BAP String Building Guide4 screens

Verdict

The call

The clearest difference is price: BAP String Building Guide at Free against Pixel Density Calculator's $2.99. BAP String Building Guide also leads on update cadence (every 2 months vs every 38 months). Pixel Density Calculator's advantage is iOS requirement (13 vs 18.5). On ads, in-app purchases and device support 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

BAP String Building Guide 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.

UpkeepUpdate frequency

Pixel Density Calculator ships an update every 38 months, BAP String Building Guide every 2 months. The most recent releases landed on September 26, 2026 and September 30, 2026 respectively.

Scorecard3 real differences · 6 level
Pixel Density Calculator versus BAP String Building Guide: the parameters behind the verdict, then further details
ParameterPixel Density CalculatorBAP String Building Guide
Price$2.99Free — better
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 38 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13 — better18.5
Further details — not scored
Size3 MB6 MB
Age rating4+4+
DeveloperHeng Jia LiangLucas Palmer

In-app purchases

None

Pixel Density Calculator

No in-app purchases

None

BAP String Building Guide

No in-app purchases

Questions

Is Pixel Density Calculator free?
Pixel Density Calculator costs $2.99, with no in-app purchases.
Is BAP String Building Guide free?
BAP String Building Guide is free to download, with no in-app purchases.
Do Pixel Density Calculator or BAP String Building Guide have ads?
Neither Pixel Density Calculator nor BAP String Building Guide shows ads.
Which is updated more often, Pixel Density Calculator or BAP String Building Guide?
Pixel Density Calculator ships an update every 38 months, and BAP String Building Guide every 2 months. Most recently, Pixel Density Calculator was updated on September 26, 2026 and BAP String Building Guide on September 30, 2026.

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