Quickly calculate missing dimensions for layouts and designs based on various aspect ratios. Features presets like the golden ratio, custom inputs, and a live visual preview. Automatically copies results to your clipboard.






247+ iOS apps curated and reviewed
The best ratio calculator pro apps on iPhone average 4.3★ across 247+ titles — we've ranked them by what real users actually keep on their phones. Updated September 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | — | No | No | May 2026 | ||
| 2 | $1.99 | 3.0★ (4) | No | No | Sep 2026 | ||
| 3 | Free | 4.9★ (409K) | Yes | No | Sep 2026 | ||
| 4 | Free | 4.4★ (7) | No | No | Sep 2026 | ||
| 5 | Free | 4.7★ (61K) | No | No | Sep 2026 | ||
| 6 | $0.99 | — | No | No | May 2026 | ||
| 7 | Free | 4.9★ (34K) | Yes | Yes | Sep 2026 | ||
| 8 | Free | 4.6★ (10K) | Yes | Yes | Sep 2026 |












Quickly calculate missing dimensions for layouts and designs based on various aspect ratios. Features presets like the golden ratio, custom inputs, and a live visual preview. Automatically copies results to your clipboard.


This utility app offers a clean and intuitive interface for performing calculations. It prioritizes a user-friendly design with large buttons and a clear display for quick and efficient use.