# Belt & Pulley Calculator — Setup two pulley system

> Calculates belt and pulley system parameters for engineering and design. (iPhone/iPad app by H3 Apps, LLC.)

- Source: https://appshunter.io/ios/app/belt-and-pulley-calculator/id1619824401 (this page in markdown: same URL + `.md`)
- Developer: [H3 Apps, LLC](https://appshunter.io/developer/598620927)
- Category: Productivity, Utilities
- Price: $0.99
- Rating: 4.60/5 from 16 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 1 MB
- Languages: English
- Released: 2023-03-14
- Data updated: 2026-08-25
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/belt-and-pulley-calculator/id1619824401/reviews.md

## What is Belt & Pulley Calculator?

Helpful in setting up a connecting belt and two pulley system. With just a few inputs (pulley diameters, driver rpm, power, centers distance, belt size), the App shows how they effect belt velocity, tension, torques, wrap angle, and the RPM of the driven pulley.

Inputs can be in imperial or metric units of measure.

Results can be shared by text or email.

## Key features

- Pulley system setup
- Calculate belt velocity
- Determine pulley torques
- Wrap angle calculation
- Driven pulley RPM
- Imperial and metric units
- Share results via text/email

## Chart rankings

- #178 in Top Paid · Productivity (US App Store)

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/belt-and-pulley-calculator/id1619824401/reviews.md

### 1/5 — Rip off

*2024-02-12*

Price was $.99. They charged my card $4.98
Filed complaint with apple

## Frequently asked questions about Belt & Pulley Calculator

### What are the main calculations performed by Belt & Pulley Calculator?

Belt & Pulley Calculator determines belt velocity, tension, torques, wrap angle, and the RPM of the driven pulley based on your inputs. It helps visualize how different parameters affect your pulley system setup.

### Can Belt & Pulley Calculator handle different measurement systems?

Yes, Belt & Pulley Calculator supports both imperial and metric units of measure for all its inputs. This flexibility ensures it can be used in various international engineering contexts.

### How can I share my pulley system calculations?

Results from Belt & Pulley Calculator can be easily shared via text or email directly from the app. This feature is useful for collaboration or documentation purposes.

### What devices is Belt & Pulley Calculator compatible with?

Belt & Pulley Calculator is designed for iPhone and iPad devices. It requires iOS 4.0 or later.

### What is the age rating for Belt & Pulley Calculator?

Belt & Pulley Calculator has an age rating of 4+. This indicates it is suitable for users of all ages, with no content restrictions.

### How often is Belt & Pulley Calculator updated?

Belt & Pulley Calculator was last updated on April 21, 2022, with version 1.0.0. As of now, there is no information on its update frequency.

### Does Belt & Pulley Calculator have ads?

No, Belt & Pulley Calculator is ad-free. Users can perform calculations without any interruptions from advertisements.

### What is the price of Belt & Pulley Calculator?

Belt & Pulley Calculator is available for a one-time purchase of $0.99. There are no in-app purchases or subscription fees associated with the app.

## Version history (last 1 release)

### 1.0.0 — 2022-04-21

No release notes.

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All apps by H3 Apps, LLC: https://appshunter.io/developer/598620927

## Related topics

[belt tension calculator](https://appshunter.io/ios/topics/belt-tension-calculator) · [rpm calculator](https://appshunter.io/ios/topics/rpm-calculator)

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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 2026-08-25.*