Comparison

Pixel Density Calculator vs MilliLog

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

MilliLog

Features
Read full description

Does your controller drift, miss presses, or behave differently from one game to the next? MilliLog shows you exactly what it is sending. Turn every controller input into visible, measurable data. Watch buttons, sticks, triggers, the D-pad, touchpad, and gyroscope in real time, then record a millisecond-accurate log when you need evidence you can inspect or share. FREE TO DOWNLOAD Everything you need to check one controller is free: the live view, millisecond logs, sound feedback, and the React game with Game Center leaderboards. The free version never expires: no trial, no time limit, no ads, no account. DIAGNOSE CONTROLLER PROBLEMS • Spot stick drift and dead zones in the live stick view. • Catch missed, delayed, or unexpected inputs. • Check trigger travel, motion data, touchpad events, and battery level. • Hear inputs as they happen with optional sound feedback. NATIVE AND PRECISE MilliLog is built natively on Apple's GameController framework, with no web views or extra layers in between. Each button press is timestamped with the system's high-resolution clock the moment it reaches the app, before anything is drawn on screen. FULL VERSION: TEST MORE THAN BUTTONS One optional purchase unlocks the rest of the toolkit: • Vibration at the intensity you choose, on all motors or each handle. • Six haptic oscillator patterns: Fast, Medium, Slow, Step, Random, and Ramp. • DualSense adaptive trigger force on L2 and R2, with Constant, Weapon, Vibration, and Slope effects. • Light-bar color on supported controllers. • Several controllers at the same time, in the live view and the log. • React local multiplayer for up to four players. • Export logs as CSV or JSON for troubleshooting, QA reports, spreadsheets, or your own analysis. PLAY REACT Put your reflexes to the test in a built-in reaction game. Sign in to Game Center to submit your best times and streaks to the leaderboards. MilliLog works with controllers supported by Apple's GameController framework, including DualSense, DualShock 4, Xbox Wireless Controller, and many MFi-compatible gamepads. Made for developers, QA testers, repair technicians, hardware enthusiasts, and players who want answers before replacing a controller. Also available on Mac. The Full Version is a one-time purchase that covers iPhone, iPad, and Mac, works with Family Sharing, and can be restored at any time. Bought MilliLog before it became free? You already have the Full Version. No ads. No tracking. No subscriptions. One optional upgrade.

Screenshots

Pixel Density Calculator4 screens
MilliLog4 screens

Verdict

The call

The clearest difference is price: MilliLog at Free against Pixel Density Calculator's $2.99. MilliLog also leads on update cadence (fortnightly vs every 38 months). Pixel Density Calculator's advantage is in-app purchases (none vs 1) and iOS requirement (13 vs 18.5). On ads 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

MilliLog is free to download; Pixel Density Calculator costs $2.99 up front. MilliLog sells 1 one-off in-app purchase. Pixel Density Calculator asks for nothing beyond the download.

UpkeepUpdate frequency

Pixel Density Calculator ships an update every 38 months, MilliLog fortnightly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

Scorecard4 real differences · 5 level
Pixel Density Calculator versus MilliLog: the parameters behind the verdict, then further details
ParameterPixel Density CalculatorMilliLog
Price$2.99Free — better
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 38 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS13 — better18.5
Further details — not scored
Size3 MB12 MB
Age rating4+4+
DeveloperHeng Jia LiangLucas Dima

In-app purchases

None

Pixel Density Calculator

No in-app purchases

1 purchases

MilliLog

One-time1
  • MilliLog Full Version$3.99

Questions

Is Pixel Density Calculator free?
Pixel Density Calculator costs $2.99, with no in-app purchases.
Is MilliLog free?
MilliLog is free to download, with in-app purchases available.
Do Pixel Density Calculator or MilliLog have ads?
Neither Pixel Density Calculator nor MilliLog shows ads.
Which is updated more often, Pixel Density Calculator or MilliLog?
Pixel Density Calculator ships an update every 38 months, and MilliLog fortnightly. Most recently, Pixel Density Calculator was updated on October 30, 2026 and MilliLog on October 28, 2026.

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