1. Home
  2. 🔧 Utilities
  3. Fit Tolerance ISO Pro
Fit Tolerance ISO Pro

Fit Tolerance ISO Pro

Fits and Tolerances Calculator

1 ratings
2 reviews
🔧 Utilities
📊 Productivity
$0.99

Details

  • Released
  • Updated
  • July 23, 2018
  • January 15, 2026

Features

Developer

Yasar Yucel Yesilbag
✨Promote your app ✨
Fit Tolerance ISO Pro screenshot #1 for iPhone
Fit Tolerance ISO Pro screenshot #2 for iPhone
Fit Tolerance ISO Pro screenshot #3 for iPhone
Fit Tolerance ISO Pro screenshot #4 for iPhone
Fit Tolerance ISO Pro screenshot #5 for iPhone
Fit Tolerance ISO Pro screenshot #6 for iPhone
Fit Tolerance ISO Pro screenshot #7 for iPhone
Fit Tolerance ISO Pro screenshot #8 for iPhone
iphone
ipad
⭐2
Reviews↘︎
🔄6+ apps
Alternatives↘︎
❓8 answered
FAQ↘︎
📦~ in 11 months
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

About

Calculate engineering tolerances for various mechanical components like bearings, shafts, and housings. It adheres to ISO and ANSI standards, providing size limits, deviations, and fit types. Visual representations of fits are also generated.

✓Calculate engineering tolerances
✓Supports ISO and ANSI standards
✓Determines clearance, transition, and interference fits
✓Provides schematic fit representations
✓Includes preferred tolerances and fits
✓Calculates size limits and deviations
Show original description

What's New in Fit Tolerance ISO Pro

3.0

January 15, 2026

On screen keyboard for nominal size is now a numpad with a decimal separator. Minor updates and improvements.

User reviews

Most RecentHighest RatedLowest Rated

Excellent Customer Support

On a recent update, the app lost the function to be able to input microns. When entering the basic size, I used to be able to enter a decimal point. That functionality was restored promptly by the apps creator after o reached out.

As a design engineer, this is great for quickly checking fits.
bkretchmerbkretchmer

Response from developer

Hello, v3.0 update has solved this issue.

Lost the Decimal Function

On a recent update, the app lost the function to be able to input microns. When entering the basic size, I used to be able to enter a decimal point. Can that function be restored? I’m using an iPhone 13 with IOS 18.6 software.

This would change my review to 5 stars.
bkretchmerbkretchmer

Response from developer

Hello, v3.0 update has solved this issue.

Developer apps

Fit Tolerance ISO
Fit Tolerance ISO

Fits and Tolerances Calculator

🔧 Utilities

(2)

Free
With Ads
Fit Tolerance ANSI
Fit Tolerance ANSI

Fits and Tolerances Calculator

🔧 Utilities

(2)

Free
With Ads
Bemazer
Bemazer

Infinite Number of Mazes!

🎮 Games
Free
In-App PurchasesWith Ads
Brick Miner
Brick Miner

Collect minerals in bricks!

🎮 Games
Free
In-App PurchasesWith Ads
See developer apps

FAQ

What is Fit Tolerance ISO Pro used for?

Fit Tolerance ISO Pro is used to calculate engineering tolerances for inner and outer features of various mechanical components such as bearings, shafts, and housings. It helps determine size limits, deviations, and the type of fit (clearance, transition, or interference).

What standards does Fit Tolerance ISO Pro follow?

The calculator adheres to the ISO 286-1 (2010), ISO 286-2 (2010), and ANSI B4.2 (1978) standards, which are based on metric units. This ensures accurate calculations according to established engineering practices.

What types of fits can Fit Tolerance ISO Pro calculate?

Fit Tolerance ISO Pro can calculate clearance fits, transition fits, and interference fits. It provides the necessary data to select the appropriate fit type based on the nominal size and specified tolerances.

Does Fit Tolerance ISO Pro offer visual representations?

Yes, Fit Tolerance ISO Pro includes a schematic representation of the calculated fit. This visual aid helps users better understand the relationship between the mating parts.

Where can I find preferred tolerances in Fit Tolerance ISO Pro?

The "Supplements" section within Fit Tolerance ISO Pro provides access to preferred tolerances and fits as advised by ISO and ANSI standards. This is a valuable resource for selecting standard and optimal fit combinations.

What devices is Fit Tolerance ISO Pro available on?

Fit Tolerance ISO Pro is available on iPhone, iPad, and iPod devices. It is designed for users who need to perform these calculations on the go.

How often is Fit Tolerance ISO Pro updated?

The last update for Fit Tolerance ISO Pro was on January 15, 2026, with the latest version being 3.0. This indicates ongoing development and support for the application.

What is the price of Fit Tolerance ISO Pro?

Fit Tolerance ISO Pro is a paid application, available for $0.99. This one-time purchase grants access to all its features for calculating engineering fits and tolerances.