# ISO Fits vs Hoffmann Connected Tools HCT

The clearest difference is review sentiment: ISO Fits at 95% against Hoffmann Connected Tools HCT's 50%. Hoffmann Connected Tools HCT's advantage is in-app purchases (none vs 1) and update cadence (monthly vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ISO Fits sells 1 one-off in-app purchase. Hoffmann Connected Tools HCT asks for nothing beyond the download.

ISO Fits ships an update every 5 months, Hoffmann Connected Tools HCT monthly. The most recent releases landed on October 16, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | ISO Fits | Hoffmann Connected Tools HCT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (6 ratings)](https://appshunter.io/ios/app/iso-fits/id396863755/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | **94.6% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 66 MB | 44 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Trelleborg Sealing Solutions](https://appshunter.io/developer/396863758) | [Hoffmann Group](https://appshunter.io/developer/537151540) |

## What reviewers say

### ISO Fits

[App page](https://appshunter.io/ios/app/iso-fits/id396863755)

Calculate ISO fits and tolerances for shafts and bores. Supports metric and inch units, displays detailed fit definitions, and includes visual charts and educational videos.

**Highlights:** ISO fits calculation, Tolerance class display, Metric/inch unit switching, Tolerance charts, Updated YouTube videos

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version with complete ISO286 Standard | $1.99 | one-time |


### Hoffmann Connected Tools HCT

[App page](https://appshunter.io/ios/app/hoffmann-connected-tools-hct/id1519433823)

This app streamlines quality inspection by precisely determining and storing measurement data. It enables wireless transfer of data via Bluetooth to various devices, saving time on documentation and reducing errors. The application also supports tool identification, status overviews, and calibration certificate retrieval.

**Highlights:** Wireless measurement data transfer via Bluetooth, Precise determination and storage of measurement data, Tool and accessory identification, Linking of tools, accessories, and storage locations, Status overview of machine tools, Retrieval of calibration certificates

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

**In-app purchases:** none


## Frequently asked questions

### Is ISO Fits free?

ISO Fits is free to download, with in-app purchases available.

### Is Hoffmann Connected Tools HCT free?

Hoffmann Connected Tools HCT is free to download, with no in-app purchases.

### Do ISO Fits or Hoffmann Connected Tools HCT have ads?

Neither ISO Fits nor Hoffmann Connected Tools HCT shows ads.

### Which is updated more often, ISO Fits or Hoffmann Connected Tools HCT?

ISO Fits ships an update every 5 months, and Hoffmann Connected Tools HCT monthly. Most recently, ISO Fits was updated on October 16, 2026 and Hoffmann Connected Tools HCT on October 11, 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.*