Hague Screw Thread Calculator vs Bolt Reader®
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hague Screw Thread Calculator
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.
- Unified screw thread data
- Whitworth screw thread data
- ISO Metric screw thread data
- Custom thread calculator
- Critical nominal dimensions
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Throw away those Thread Data Tables and Screw Thread books as Hague Fasteners bring you the perfect Engineers Thread Companion. Now you can see all the data you need for Unified & Whitworth Imperial Screw Threads along with ISO Metric and Custom threads. This handy calculator shows all the data you need for Standard UNC, UNF, UNEF, BSW, BSF, Metric Coarse & Metric Fine along with the facility to create any non standard custom thread size / thread pitch combination to see all the critical nominal dimensions. Hague Fasteners are not responsible for any technical errors or typographical errors in this calculator. All critical data should be checked and verified against the relevant International Standard prior to use.
Bolt Reader®
This application provides users with real-time bolt tension data through intuitive bar graphs. It is specifically designed to work with Bolt-Cap Module devices from Transmission Dynamics, helping users quickly identify screws needing attention.
- Real-time bolt tension information
- Bar graph data visualization
- Identify screws requiring attention
- Designed for Bolt-Cap Module devices
- Works with Transmission Dynamics hardware
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Thanks to the innovative undertaking of creating the Bolt Reader® application, users have constant access to information on bolt tension. Information is presented in the form of bar graphs, which allows you to quickly spot screws that require attention. This application is specifically designed for Bolt-Cap Module devices produced by Transmission Dynamics. Transmission Dynamics; Redefining the Status Quo
Screenshots
Verdict
The clearest difference is rating: Bolt Reader® at 5.0 against Hague Screw Thread Calculator's 4.0. Hague Screw Thread Calculator's advantage is in-app purchases (none vs 1). On price, ratings volume, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Bolt Reader® sells 1 one-off in-app purchase. Hague Screw Thread Calculator asks for nothing beyond the download.
Bolt Reader® holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 5 and 6 respectively.
Hague Screw Thread Calculator ships an update every 2 months, Bolt Reader® every 5 weeks. The most recent releases landed on October 9, 2026 and October 3, 2026 respectively.
| Parameter | Hague Screw Thread Calculator | Bolt Reader® |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (5 ratings) | 5.0 (6 ratings) — better |
| Positive reviews | 82.8% of reviews | — |
| Number of ratings | 5 | 6 — better |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.4 | 14.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Hague Fasteners Ltd | Transmission Dynamics |
Customer experience
Hague Screw Thread Calculator
Bolt Reader®
In-app purchases
Hague Screw Thread Calculator
No in-app purchases
Bolt Reader®
- Full version$49.99
Questions
Is Hague Screw Thread Calculator free?
Is Bolt Reader® free?
Which has better reviews, Hague Screw Thread Calculator or Bolt Reader®?
Do Hague Screw Thread Calculator or Bolt Reader® have ads?
Which is updated more often, Hague Screw Thread Calculator or Bolt Reader®?
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