# Bolt Torque vs Piping Engineer's Toolbox

The clearest difference is update cadence: Bolt Torque at monthly against Piping Engineer's Toolbox's every 21 months. Piping Engineer's Toolbox's advantage is price ($4.99 vs $9.99) and iOS requirement (15.6 vs 18.6). On ads, in-app purchases and device support there is nothing between them.

Bolt Torque costs $9.99 and Piping Engineer's Toolbox $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Bolt Torque ships an update monthly, Piping Engineer's Toolbox every 21 months. The most recent releases landed on September 6, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Bolt Torque | Piping Engineer's Toolbox |
| --- | --- | --- |
| Price | $9.99 | **$4.99** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bolt-torque/id702964576/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 21 months |
| Monetization | Paid | — |
| Size | 1 MB | 57 MB |
| Requires iOS | 18.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jochen Autrata](https://appshunter.io/developer/702964579) | [Ashvin Kevadiya](https://appshunter.io/developer/1756324971) |

## What reviewers say

### Bolt Torque

[App page](https://appshunter.io/ios/app/bolt-torque/id702964576)

Calculate maximum tightening torque and preloads for various screws. Analyze preloads and stresses to ensure limits are met. All screw data is conveniently presented on a results page.

**Highlights:** Calculate tightening torque, Calculate preloads, Analyze stresses, Check limits, View screw data

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Piping Engineer's Toolbox

[App page](https://appshunter.io/ios/app/piping-engineers-toolbox/id6738736451)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Bolt Torque free?

Bolt Torque costs $9.99, with no in-app purchases.

### Is Piping Engineer's Toolbox free?

Piping Engineer's Toolbox costs $4.99, with no in-app purchases.

### Do Bolt Torque or Piping Engineer's Toolbox have ads?

Neither Bolt Torque nor Piping Engineer's Toolbox shows ads.

### Which is updated more often, Bolt Torque or Piping Engineer's Toolbox?

Bolt Torque ships an update monthly, and Piping Engineer's Toolbox every 21 months. Most recently, Bolt Torque was updated on September 6, 2026 and Piping Engineer's Toolbox on September 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*