# Fit Tolerance ANSI vs Mechanical Engineering Toolkit

The clearest difference is in-app purchases: Fit Tolerance ANSI at none against Mechanical Engineering Toolkit's 1. Fit Tolerance ANSI also leads on rating (5.0 vs 4.8). Mechanical Engineering Toolkit's advantage is update cadence (every 5 days vs every 9 months) and ratings volume (64 vs 2). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Mechanical Engineering Toolkit sells 1 one-off in-app purchase. Fit Tolerance ANSI asks for nothing beyond the download.

Fit Tolerance ANSI holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Mechanical Engineering Toolkit has 64 ratings behind it against 2, so its average is the more settled of the two.

Fit Tolerance ANSI ships an update every 9 months, Mechanical Engineering Toolkit every 5 days. The most recent releases landed on October 12, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Fit Tolerance ANSI | Mechanical Engineering Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fit-tolerance-ansi/id1294112198/reviews)** | [4.8 (64 ratings)](https://appshunter.io/ios/app/mechanical-engineering-toolkit/id1601099443/reviews) |
| Number of ratings | 2 | **64** |
| Positive reviews | — | 57.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 9 months | **Every 5 days** |
| Monetization | Ad-supported | Ad-supported |
| Size | 51 MB | 47 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Yasar Yucel Yesilbag](https://appshunter.io/developer/1251895011) | [APPS BAY LIMITED](https://appshunter.io/developer/1599035519) |

## What reviewers say

### Fit Tolerance ANSI

[App page](https://appshunter.io/ios/app/fit-tolerance-ansi/id1294112198)

Calculate ANSI standard limits and fits for cylindrical parts like bearings and shafts. It supports various fit types based on inch units and provides a schematic representation of the fit. Ideal for engineers and designers working with precision components.

**Highlights:** ANSI standard limits and fits calculation, Supports inch units, Calculates tolerances for inner and outer features, Handles various fit types (RC, LC, LT, LN, FN), Schematic representation of fits, Applicable to non-threaded cylindrical parts

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

**In-app purchases:** none


### Mechanical Engineering Toolkit

[App page](https://appshunter.io/ios/app/mechanical-engineering-toolkit/id1601099443)

This utility app provides a comprehensive collection of engineering equations and formulas for students and professionals. Easily perform calculations by selecting a formula and inputting variables, with detailed instructions and reference material included.

**Highlights:** Engineering equations and formulas, Mechanics of Material calculations, Theory of Elasticity formulas, Composite Material properties, Reference material, Variable input for calculations

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Fit Tolerance ANSI free?

Fit Tolerance ANSI is free to download, with no in-app purchases.

### Is Mechanical Engineering Toolkit free?

Mechanical Engineering Toolkit is free to download, with in-app purchases available.

### Which has better reviews, Fit Tolerance ANSI or Mechanical Engineering Toolkit?

Fit Tolerance ANSI is rated higher. Fit Tolerance ANSI averages 5.0 out of 5 from 2 ratings, while Mechanical Engineering Toolkit averages 4.8 from 64 ratings.

### Do Fit Tolerance ANSI or Mechanical Engineering Toolkit have ads?

Both Fit Tolerance ANSI and Mechanical Engineering Toolkit show ads.

### Which is updated more often, Fit Tolerance ANSI or Mechanical Engineering Toolkit?

Fit Tolerance ANSI ships an update every 9 months, and Mechanical Engineering Toolkit every 5 days. Most recently, Fit Tolerance ANSI was updated on October 12, 2026 and Mechanical Engineering Toolkit on October 25, 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.*