250+ iOS apps curated and reviewed
Whether you're new to thread length calculator or looking for an upgrade, our curated collection of 250+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (3) | No | No | Aug 2026 | |
| 2 |  | Free | 4.0★ (5) | No | No | May 2026 | |
| 3 |  | Free | 4.3★ (13) | Yes | No | May 2026 | |
| 4 |  | Free | — | No | No | May 2026 | |
| 5 |  | $4.99 | 1.8★ (4) | No | No | Sep 2026 | |
| 6 |  | $9.99 was $17.99 | 5.0★ (1) | No | No | Jul 2026 | |
| 7 |  | Free | — | No | No | May 2026 | |
| 8 |  | Free | 4.7★ (12) | No | No | Aug 2026 |
This free tool helps leatherworkers accurately calculate the thread length required for their projects. It accounts for the number of holes, stitching length, and leather thickness, ensuring you always have enough material.
This engineering tool provides instant access to critical dimensions for various screw thread standards, including Unified, Whitworth, and ISO Metric. It also allows for the creation and calculation of custom thread sizes and pitches, eliminating the need for physical reference books.
This app provides a quick and easy way to calculate thread dimensions for various units, including tap hole sizes and bolt specifications. It helps metalworkers find precise measurements for internal and external threads without consulting tables.
