# ThreadKing — Ultimate Reference for Threads > Comprehensive reference and calculator for mechanical threads and tap sizes. (iPhone/iPad app by Motionics LLC.) - Source: https://appshunter.io/ios/app/threadking/id1073753793 (this page in markdown: same URL + `.md`) - Developer: [Motionics LLC](https://appshunter.io/developer/424498959) - Category: Productivity, Utilities - Price: Free - Rating: 4.70/5 from 12 App Store ratings · 10 written reviews indexed - Age rating: 4+ - Requires: iOS 8.1 · 7 MB - Languages: American English - Released: 2016-01-17 - Data updated: 2026-08-26 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/threadking/id1073753793/reviews.md ## What is ThreadKing? ThreadKing is the ultimate reference and calculator for threads. It contains all the information for Metric and UN Taps, Fine/Course Threads, Drill/Tap sizes, Pipe Tap sizes, and Thread Dimension. ThreadKing is also a handy calculator for finding the right drill size in Cutting Tap and Forming Tap based on Thread Percentage. Besides, it calculates RPM and feed rates in Cutting Tap for different materials FEATURES: - Drill/Tap Chart available in drill size standards: Fractional, Letter, Wire Gauge and Metric - Course and Fine Thread - Pipe Thread Chart - Cutting Tap Calculator based on Thread Percentage - Forming Tap Calculator based on Thread Percentage - Cut Tapping RPM and Feed Rate Calculator - Thread Dimension Information: Major Dia, Pitch Dia, Minor Dia, Pitch, Thread Height, Threads per Inch - Formular and Equations for Reference ## Key features - Metric and UN thread reference - Drill/Tap size charts - Pipe thread information - Cutting tap calculator - Forming tap calculator - RPM and feed rate calculator - Thread dimension details ## Recent user reviews (10 of 10) All indexed reviews: https://appshunter.io/ios/app/threadking/id1073753793/reviews.md ### 5/5 — Awesome app *2019-02-10* Lots of convenient information that is easy to find. Is it free? ### 4/5 — Need to add STI *2018-05-20* It would be one of the best thread apps if it had STI (Helicoil) taps as well. As a Machinist we use STI quite often. ### 4/5 — Very good and useful app *2017-09-23* Very good thread app, the “find drill” is very handy. Only improvement would be adding more threads, odd balls and larger threads would be nice. ### 5/5 — Great app! *2016-01-25* I've used it twice since I downloaded it early this morning, and it's very useful and helpful. Great app! ### 5/5 — A must have app *2016-01-24* It has literally everything for threads, drill and taps.. It's a complete app.. So easy to use and well designed ! Thanks !! ### 5/5 — Excellent! *2016-01-24* Excellent app! ### 5/5 — Theadking *2016-01-23* Enjoy the app. Thread percentages and formulas SAE and Metric and pipe very useful. ### 5/5 — Amazing *2016-01-23* Thanks for a great app will definitely use often ### 5/5 — Great App *2016-01-23* Very easy to use and a very handy tool if you're a machinist or every day mechanic. ### 5/5 — Big fan already! *2016-01-22* The app works great, I like the formula page and the tap drill calculator a lot. Will continue to use! ## Frequently asked questions about ThreadKing ### What types of threads does ThreadKing cover? ThreadKing covers Metric and UN Taps, Fine/Course Threads, and Pipe Tap sizes. It provides detailed thread dimension information such as Major Dia, Pitch Dia, Minor Dia, Pitch, Thread Height, and Threads per Inch. ### Can ThreadKing help with drill sizes? Yes, ThreadKing includes a Drill/Tap Chart available in various drill size standards: Fractional, Letter, Wire Gauge, and Metric. It also functions as a calculator for finding the right drill size based on Thread Percentage for both Cutting and Forming Taps. ### Does ThreadKing calculate machining speeds? Yes, ThreadKing includes a Cutting Tapping RPM and Feed Rate Calculator. This feature allows users to calculate RPM and feed rates for different materials when using cutting taps. ### How accurate is ThreadKing's data? ThreadKing has a high user rating of 4.7 stars from 12 ratings, indicating positive user sentiment regarding its accuracy and usefulness as a reference tool. ### Is ThreadKing available on Android devices? Based on the provided data, ThreadKing is supported on iPhone and iPod. Information regarding Android compatibility is not available. ### How often is ThreadKing updated? The latest version of ThreadKing is 1.3, which was last updated on October 21, 2022. This indicates a moderate update frequency for the application. ### What is the age rating for ThreadKing? ThreadKing has an age rating of 4+, making it suitable for a wide range of users, including younger individuals who may be learning about mechanical concepts. ### Does ThreadKing have ads? No, ThreadKing does not contain advertisements, as indicated by the 'hasAds' flag being false. ## Version history (last 4 releases) ### 1.3 — 2022-10-21 Fixed minor display issue ### 1.2 — 2022-10-17 - Update for latest iOS version ### 1.1 — 2016-01-22 This app has been updated by Apple to display the Apple Watch app icon. - Updated Forming Tap Calculator ### 1.0 — 2016-01-17 No release notes. ## Apps similar to ThreadKing | App | Rating | Price | Category | | --- | --- | --- | --- | | [Jumpstash](https://appshunter.io/ios/app/jumpstash/id1465670860) | 4.2 (5) | Free | Productivity | | [OneTwoCount](https://appshunter.io/ios/app/onetwocount/id1454584180) | — | Free | Productivity | | [ZappID](https://appshunter.io/ios/app/zappid/id1455029820) | — | Free | Productivity | | [SyncOnSet 5.0](https://appshunter.io/ios/app/synconset-50/id1460160860) | 1.7 (61) | Free | Productivity | | [Your Ashford BC](https://appshunter.io/ios/app/your-ashford-bc/id1452979480) | — | Free | Productivity | | [Thetis Tools](https://appshunter.io/ios/app/thetis-tools/id1460268980) | — | Free | Productivity | ## More apps by Motionics LLC - [iWindTurbine](https://appshunter.io/ios/app/iwindturbine/id424498956) - [iRotorBalance](https://appshunter.io/ios/app/irotorbalance/id430978753) - [iAlignCalc](https://appshunter.io/ios/app/ialigncalc/id441151338) - [VibraUnits](https://appshunter.io/ios/app/vibraunits/id445231670) - [REBvibe](https://appshunter.io/ios/app/rebvibe/id445515440) - [VibeSpectra](https://appshunter.io/ios/app/vibespectra/id448014799) All apps by Motionics LLC: https://appshunter.io/developer/424498959 ## Related topics [kennametal](https://appshunter.io/ios/topics/kennametal) · [machinist tool](https://appshunter.io/ios/topics/machinist-tool) · [fswizard](https://appshunter.io/ios/topics/fswizard) · [threader pro](https://appshunter.io/ios/topics/threader-pro) · [slender threads](https://appshunter.io/ios/topics/slender-threads) · [sandvik coromant](https://appshunter.io/ios/topics/sandvik-coromant) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*