250+ iOS apps curated and reviewed
If you already know Flange Hole Marker Calc, this is the deeper bench. 250+ flange hole marker calc apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.7★ (3) | No | Yes | Oct 2026 | |
| 2 |  | $3.99 | 5.0★ (1) | No | No | Oct 2026 | |
| 3 |  | $1.99 | — | No | No | Aug 2026 | |
| 4 |  | $2.99 | — | No | No | Aug 2026 | |
| 5 |  | Free | — | No | No | Aug 2026 | |
| 6 |  | Free | 5.0★ (13) | No | No | Jul 2026 | |
| 7 |  | Free | 3.0★ (4) | No | No | May 2026 | |
| 8 |  | Free | — | No | No | May 2026 |
This engineering tool simplifies flange hole layout for professionals. It offers three calculators for accurate marking of equispaced, angled, or equivalent holes, saving time and reducing errors in fabrication and machining. Works offline.
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.
