# EMCO vs Fit Tolerance ISO

The clearest difference is ads: EMCO at none against Fit Tolerance ISO's shown. EMCO also leads on update cadence (every 3 months vs every 12 months) and iOS requirement (12.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

EMCO ships an update every 3 months, Fit Tolerance ISO every 12 months. The most recent releases landed on May 28, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | EMCO | Fit Tolerance ISO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fit-tolerance-iso/id1251895012/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 12 months |
| Monetization | — | Ad-supported |
| Size | 11 MB | 51 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EMCO-TEST Prüfmaschinen GmbH](https://appshunter.io/developer/914831707) | [Yasar Yucel Yesilbag](https://appshunter.io/developer/1251895011) |

## What reviewers say

### EMCO

[App page](https://appshunter.io/ios/app/emco-test/id914831704)

**Features:** macOS Compatibility

**In-app purchases:** none


### Fit Tolerance ISO

[App page](https://appshunter.io/ios/app/fit-tolerance-iso/id1251895012)

Calculates engineering tolerances for various mechanical components based on ISO and ANSI standards. It determines size limits, deviations, and fit types for holes and shafts, offering schematic representations of fits.

**Highlights:** Calculates engineering tolerances, Supports ISO and ANSI standards, Determines clearance, transition, and interference fits, Provides schematic fit representations, Includes preferred tolerances and fits, Works with metric units

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

**In-app purchases:** none


## Frequently asked questions

### Is EMCO free?

EMCO is free to download, with no in-app purchases.

### Is Fit Tolerance ISO free?

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

### Do EMCO or Fit Tolerance ISO have ads?

Fit Tolerance ISO shows ads; EMCO does not.

### Which is updated more often, EMCO or Fit Tolerance ISO?

EMCO ships an update every 3 months, and Fit Tolerance ISO every 12 months. Most recently, EMCO was updated on May 28, 2026 and Fit Tolerance ISO on October 12, 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.*