200+ iOS apps curated and reviewed
Looking for free ppi calc apps? 16 of our 200+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free was $0.99 | 4.7★ (37) | No | No | Aug 2026 |
| 2 |  | Free | 3.2★ (6) | No | No | Aug 2026 |
| 3 |  | Free | 4.3★ (3) | No | No | Jul 2026 |
| 4 |  | Free | 4.3★ (12) | No | No | May 2026 |
| 5 |  | $0.99 | 4.5★ (868) | No | Yes | Aug 2026 |
| 6 |  | Free | 4.4★ (7) | No | No | May 2026 |
| 7 |  | Free | 4.8★ (3.3K) | Yes | No | Aug 2026 |
| 8 |  | Free | 4.6★ (9.6K) | Yes | Yes | Aug 2026 |
Calculate your display's pixel density (PPI) using its dimensions and pixel count. Learn about PPI and DPI definitions, and how to categorize screen resolution.
Easily calculate the Pixels Per Inch (PPI) for any screen, from phones to monitors. Input screen dimensions and diagonal size to get an instant PPI result and determine if it qualifies as a Retina Display. You can also search for device information online and save your calculations.
Calculate display settings like DPI and PPI using only screen resolution and diagonal measurements. This straightforward utility tool provides essential display information.
Calculate pixels per inch (PPI) for any screen, along with aspect ratio and screen measurements. View data in inches or centimeters. Includes presets for standard resolutions and common devices.
This utility app helps you calculate and scale screen resolutions based on aspect ratios. Save and manage your frequently used resolutions for easy access. Sync your presets across Apple devices.
Calculate display parameters for monitors, phones, and notebooks. This tool helps determine base settings for various devices.
Emulates the TI BAII Plus financial calculator, offering identical functionality with a clean and user-friendly interface. It's designed for finance professionals and students preparing for exams like CFA, FRM, and CPA.
This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.
This advanced RPN scientific calculator offers workstation-class Computer Algebra System (CAS) capabilities, going beyond traditional replicas. It provides access to an extensive library of modules and programs, enhanced with iOS features, customizable skins, and iCloud support for seamless data management.
This free scientific calculator offers essential features like RPN mode, unit conversions, and multiple undo/redo. It provides a taste of a more powerful version, with optional in-app purchases for expanded functionality.
This is a straightforward calculator application designed for ease of use and clear readability. Users can personalize the app's appearance by choosing their preferred background and display themes.
Calculate percentage changes quickly and easily. This tool helps determine starting values, percentages, differences, or end values for various scenarios like salary increases or sale promotions.
This calculator app automatically saves your calculations as memos, preventing errors and eliminating the need for manual note-taking. Easily share your calculations and notes with others, and access them across devices.
A visually appealing and straightforward calculator app for iPhone and iPad. It offers a unique user interface with support for basic and scientific calculations, various number base conversions, and currency and unit conversions.
This app offers a versatile calculator experience with basic, scientific, and advanced modes. It features real-time results, unit conversions, custom functions, and a shareable history. Optimized for various Apple devices, it's designed for ease of use by students, professionals, and scientists.
This app simplifies adding and subtracting long series of numbers. It allows users to view, edit, and delete each entry, adding descriptions for clarity. Ideal for budgeting, game scoring, or tracking mileage accurately.
A powerful calculator designed for professionals and students, offering advanced features like RPN mode, multi-line display, and extensive unit conversions. It supports various number systems and includes an Apple Watch app for on-the-go calculations.
This advanced calculator offers over 100 functions for business, finance, math, and statistics. It simplifies complex calculations like loans, cash flows, and depreciation with an intuitive interface and specialized worksheets. Includes interactive graphs and an audit tape for tracking all computations.
This app offers a fully functional scientific calculator and a notepad with automatic note-taking capabilities. Save your calculations and add custom content to notes for easy future reference. It supports multitasking features on iPad and offers optional upgrades for advanced functionality.
This interactive calculator allows users to graph various mathematical functions, conics, and inequalities without charge. It provides instant insights into function properties like extreme points, intercepts, and asymptotes. For deeper analysis, it links to a solver that offers step-by-step evaluations, available via in-app purchase.