# ISO Fits & Tolerance Tools — ISO 286 Tolerance & Fits

> ISO 286 Tolerance & Fits (iPhone/iPad app by Ashvin Kevadiya.)

- Source: https://appshunter.io/ios/app/iso-fits-and-tolerance-tools/id6761895214 (this page in markdown: same URL + `.md`)
- Developer: [Ashvin Kevadiya](https://appshunter.io/developer/1756324971)
- Category: Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 13.0 · 52 MB
- Languages: American English
- Released: 2026-04-09
- Data updated: 2026-06-28
- User reviews in markdown: https://appshunter.io/ios/app/iso-fits-and-tolerance-tools/id6761895214/reviews.md

## What is ISO Fits & Tolerance Tools?

Simplify complex tolerance and fit calculations with a powerful all-in-one engineering toolkit. Whether you're working with ISO, ASME, or GOST standards, this app helps you calculate, select, and analyze fits with speed and accuracy.

KEY FEATURES
Comprehensive Tolerance Reference
- Tolerance values for sizes from 1 mm to 10,000 mm
- Supports ISO 286, ASME B4.1 (ANSI), and GOST standards
- Quick lookup tables for real-world engineering use

Smart Tolerance Calculator
- Find suitable tolerances based on given deviations
- Get multiple tolerance options instantly
- Works across ISO and ASME systems

Fit Selection Made Easy
- Select shaft/hole fits based on size and deviation
- Automatically calculates:
- Clearance (gap)
- Interference (tightness)
- Perfect for design & manufacturing decisions

Advanced Engineering Tools
- Angle tolerance calculations
- Convert taper values to degrees, minutes, seconds
- Built-in triangle calculator

Tolerance Stack-Up Calculator
- Solve dimensional chains using max-min method
- Quickly determine closing dimensions
- All calculations are automatically saved

Casting Tolerances
- Tolerance values based on accuracy class & casting method
- Fully aligned with GOST standards

Shape Tolerances Reference
- Quick guide to geometric tolerances
- Based on ISO 1101 & GOST 2.308

Unit Converter
- Convert millimeters ↔ inches instantly

WHY THIS APP?
- Built for mechanical engineers, CNC programmers & designers
- Combines multiple standards in one place
- Saves time and reduces calculation errors
- Clean, fast, and easy-to-use interface

NOTE
All information provided is for reference purposes only.

In-app purchase Details: 

Lifetime Access for ads free version

Privacy Policy : https://visionaso.in/manager/privacypolicy.html
Terms of use : https://visionaso.in/manager/termscondition.html

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Premium | $12.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-04-09

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 2026-06-28.*