250+ iOS apps curated and reviewed
With an average user rating of 4.1★, the flange hole marker calculator category is one of the App Store's strongest. Browse all 250+ apps we track, sorted so the most loved ones surface first.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | $3.99 | 5.0★ (1) | No | No | Oct 2026 | |
| 2 |  | $1.99 | — | No | No | Aug 2026 | |
| 3 |  | $2.99 | — | No | No | Aug 2026 | |
| 4 |  | Free | 4.7★ (3) | No | Yes | Oct 2026 | |
| 5 |  | Free | — | No | No | May 2026 | |
| 6 |  | Free | 5.0★ (13) | No | No | Jul 2026 | |
| 7 |  | Free | 5.0★ (2) | No | Yes | Oct 2026 | |
| 8 |  | $1.99 | — | No | No | Oct 2026 |
This engineering tool accurately calculates and marks bolt hole positions on flanges for machinists and fabricators. It offers features for equispaced, angle-based, and equivalent hole counts, saving time and reducing manual errors in workshop settings.
Calculate the cord length needed to mark holes on a flange's pitch circle diameter. Ideal for fabrication professionals, this tool simplifies bolt hole marking on various industrial equipment.
Calculate precise flange hole markings for equispaced holes, angles, and equivalent hole counts. Supports both millimeters and inches for various fabrication and engineering applications.
