# PropSlipCalc

> Calculates propeller slip for thrust optimization. (iPhone/iPad app by Sukhmeet Soin.)

- Source: https://appshunter.io/ios/app/propslipcalc/id1031783994 (this page in markdown: same URL + `.md`)
- Developer: [Sukhmeet Soin](https://appshunter.io/developer/1031783993)
- Category: Utilities
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 5 MB
- Languages: English
- Released: 2015-08-29
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/propslipcalc/id1031783994/reviews.md

## What is PropSlipCalc?

Is it important to know your prop’s slip? Only if you care about insignificant, little items like thrust. 

Slip is the most misunderstood of all propeller terms, probably because it sounds like something undesirable. Slip is not a measure of propeller efficiency. Rather, slip is the difference between actual and theoretical travel resulting from a necessary propeller blade angle of attack. If the blade had no angle of attack, there would be no slip; but, of course, there would be no positive and negative pressure created on the blades and, therefore, there would be no thrust. The Mercury Racing Prop Slip Calculator (below) lets you quickly determine propeller slip.

## Key features

- Propeller slip calculation
- Thrust optimization insights
- Understanding propeller performance

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/propslipcalc/id1031783994/reviews.md

### 5/5 — A Must Have App

*2020-08-26*

For Mercury owners, racers or not, if you’re an enthusiast of propellers and performance, this is a serious tool to have in your bag of tricks. Please download it and try it. Supply the necessary data, and presto, complex calculations delivered easily with no stress.

### 5/5 — Great App!

*2015-12-02*

Can get prop slip numbers during the seatrial at each rpm range...very handy!

### 2/5 — App not working

*2015-12-01*

Have been using this app for a few weeks and works great!! But now access is being denied because it now gives a message that the trial period has expired but allows no way to remedy the issue.  Please help!!

## Frequently asked questions about PropSlipCalc

### What is PropSlipCalc?

PropSlipCalc is a utility app designed to calculate propeller slip. It helps users understand the difference between a propeller's actual and theoretical travel, which is important for thrust.

### Is PropSlipCalc free to use?

Yes, PropSlipCalc is completely free to download and use. There are no in-app purchases or advertisements.

### What devices does PropSlipCalc support?

PropSlipCalc is available for iPhone and iPod devices. It is not currently available for Android or other platforms.

### How often is PropSlipCalc updated?

The latest version of PropSlipCalc is 1.8, which was released on May 25, 2020. The app was originally released on August 29, 2015.

### What is the age rating for PropSlipCalc?

PropSlipCalc has an age rating of 4+. This indicates it is suitable for users of all ages.

### What do users think of PropSlipCalc?

Based on the available data, PropSlipCalc has a perfect 5.0-star rating from 2 reviews, suggesting a very positive user sentiment.

### Does PropSlipCalc have ads?

No, PropSlipCalc is ad-free. Users can enjoy the application without any interruptions from advertisements.

## Version history (last 5 releases)

### 1.8 — 2020-05-25

Upgraded for latest iOS.

### 1.7 — 2016-10-31

Image Update and upgraded for latest iOS.

### 1.6 — 2015-12-29

Small Fix with an image update

### 25112015 — 2015-12-01

Bug Fixes

### 23102015 — 2015-10-12

Minor changes

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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 2026-06-10.*