249+ iOS apps curated and reviewed
If you already know Flange Hole Marker Calc, this is the deeper bench. 249+ flange hole marker calc apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (1) | No | Yes | Aug 2026 |
| 2 |  | $3.99 | 5.0★ (1) | No | No | Jul 2026 |
| 3 |  | $1.99 | — | No | No | Aug 2026 |
| 4 |  | $2.99 | — | No | No | Aug 2026 |
| 5 |  | Free | 5.0★ (13) | No | No | Jul 2026 |
| 6 |  | Free | — | No | No | May 2026 |
| 7 |  | Free | 3.0★ (4) | No | No | May 2026 |
| 8 |  | Free | — | No | No | Aug 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.
Calculate precise flange hole markings for equispaced holes, angles, and equivalent hole counts. Supports both millimeters and inches for various fabrication and engineering applications.
Access essential measurements and dimensional data for API 6A integral flanges. This tool provides quick access to critical specifications for engineering and industrial applications.
This app calculates the true position of holes based on engineering drawing dimensions and tolerances. It helps determine if hole positions meet required specifications, with or without Maximum Material Condition. It's a tool for manufacturing quality control.
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 is a comprehensive calculator for CNC machinists, simplifying the calculation of speeds and feeds for milling, drilling, and turning operations. It automatically suggests optimal cutting conditions based on material choices and supports advanced features like chip thinning and HSM machining.
This app offers a versatile calculator with three distinct modes: Basic, Scientific, and Programmer. It provides a history view, sharing capabilities, and supports various input and output formats. The app is designed for iPhone, iPad, and iPod Touch.
This app provides machinists and engineers with a comprehensive suite of tools for CNC operations. It offers a wide range of calculations for turning, milling, drilling, and more, designed to enhance precision and boost productivity.
This app provides machining professionals with a comprehensive set of tools for calculations related to speeds, feeds, threads, and trigonometry. It aims to increase productivity and reduce tool wear by offering quick access to essential data, replacing the need for physical charts and books.
This app simplifies complex construction calculations by handling feet, inches, and fractions accurately. It offers specialized solvers for common jobsite tasks like stairs, roof pitch, and concrete, with results saved automatically for easy recall. It's designed for offline use and provides a one-time purchase for full access.