# BoltCalcSimple — Torque / Clamp Load Calculator

> Field torque calculator for bolted joints, estimating torque for clamp load. (iPhone/iPad app by David May.)

- Source: https://appshunter.io/ios/app/boltcalcsimple/id6747013276 (this page in markdown: same URL + `.md`)
- Developer: [David May](https://appshunter.io/developer/1819398208)
- Category: Utilities, Business
- Price: Free
- Rating: 5.00/5 from 4 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.1 · 60 MB
- Languages: American English
- Released: 2025-07-15
- Data updated: 2026-07-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/boltcalcsimple/id6747013276/reviews.md

## What is BoltCalcSimple?

Field Torque Calculator for Bolted Joints


Built for Installers, and Engineers.


This simple, practical tool eliminates the need for bulky torque charts or overly complicated apps. Whether you're working on-site, in a plant, or in the field, just select your bolt size and grade — and get a reliable torque estimate instantly.
Why this app is different:
•	Designed specifically for installers — not engineers
•	Only the inputs you actually know in the field
•	No fluff, no overcomplicated formulas, no unnecessary steps
•	Instant torque estimates based on industry-standard formulas


Features:
•	Select bolt thread size and grade
•	Adjust K-factor and tightening percentage
•	Outputs torque required to reach target clamp load
•	Works offline — perfect for job sites with no signal


This app helps you get it right the first time, every time.

## Key features

- Select bolt thread size and grade
- Adjust K-factor and tightening percentage
- Outputs torque for target clamp load
- Works offline
- Designed for installers

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/boltcalcsimple/id6747013276/reviews.md

### 5/5 — If you need a torque value, this is the app

*2025-10-04*

Simple, easy to use, accurate,

## Frequently asked questions about BoltCalcSimple

### What is BoltCalcSimple used for?

BoltCalcSimple is a field torque calculator designed to estimate the torque required for bolted joints to achieve a target clamp load. It simplifies the process by allowing users to select bolt size and grade for instant, reliable estimates.

### Is BoltCalcSimple suitable for engineers?

Yes, while designed with installers in mind, BoltCalcSimple is also useful for engineers. It provides industry-standard formulas and allows for adjustments to K-factor and tightening percentage, offering a practical tool for on-site calculations.

### Does BoltCalcSimple require an internet connection?

No, BoltCalcSimple works offline, making it perfect for job sites or field locations where internet signal may be unreliable or unavailable. You can get torque estimates anywhere, anytime.

### How accurate are the torque estimates from BoltCalcSimple?

The app provides reliable torque estimates based on industry-standard formulas. It aims to help users get the correct torque settings the first time, every time, by simplifying complex calculations.

### What information do I need to use BoltCalcSimple?

To use BoltCalcSimple, you primarily need to select the bolt thread size and grade. You can also adjust the K-factor and tightening percentage for more specific calculations.

### Does BoltCalcSimple have ads?

No, BoltCalcSimple is ad-free, ensuring a clean and uninterrupted user experience while performing calculations.

### What devices is BoltCalcSimple available on?

BoltCalcSimple is available on iPhone and iPad devices. It is designed for users who need a portable and accessible calculation tool.

### How often is BoltCalcSimple updated?

The latest version of BoltCalcSimple is 3.0, which was last updated on August 12, 2025. This indicates ongoing development and support for the application.

## Version history (last 3 releases)

### 3.0 — 2025-08-12

Added a new admin-only feature that estimates clamp load based on a given torque and K factor.

### 2.0 — 2025-07-30

Added feature to let user select whether to use the material proof load or yield strength in the calculation.
Corrected calculation for UN (inch) thread pitches that are non integer numbers (i.e. 2 x 4 1/2)

### 1.0 — 2025-07-16

No release notes.

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*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 2026-07-04.*