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 | Oct 2026 | |
| 2 |  | $4.99 | 1.8★ (4) | No | No | Oct 2026 | |
| 3 |  | Free | 4.0★ (5) | No | No | May 2026 | |
| 4 |  | Free | — | No | No | May 2026 | |
| 5 |  | Free | — | No | No | Oct 2026 | |
| 6 |  | $9.99 | 5.0★ (1) | No | No | Jul 2026 | |
| 7 |  | Free | 4.7★ (13) | No | No | Nov 2026 | |
| 8 |  | Free | 4.9★ (410K) | Yes | No | Nov 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.
Easily measure the thread pitch of various screws and bolts directly on your device's screen. This utility app calibrates automatically to your screen width for accurate measurements of metric, US, NPT, and BSPT threads.
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.
