250+ iOS apps curated and reviewed
Out of 250+ ppi calculator apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 3.4★ (7) | No | No | Nov 2026 | |
| 2 |  | Free | 4.3★ (3) | No | No | Oct 2026 | |
| 3 |  | Free | 4.4★ (13) | No | No | Oct 2026 | |
| 4 |  | Free | 4.4★ (7) | No | No | Oct 2026 | |
| 5 |  | Free | 4.9★ (410K) | Yes | No | Nov 2026 | |
| 6 |  | Free | 1.7★ (3) | No | No | Nov 2026 | |
| 7 |  | Free | 4.7★ (61K) | No | No | Nov 2026 | |
| 8 |  | Free | — | Yes | Yes | Jul 2026 |
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.
