# Unbrako vs KATO App

The clearest difference is review sentiment: KATO App at 100% against Unbrako's 33%. KATO App also leads on rating (5.0 vs 2.6) and device support (3 vs 1). Unbrako's advantage is update cadence (every 3 weeks vs every 9 months) and ratings volume (5 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

KATO App holds the better App Store score, 5.0 against 2.6. That said, the two scores are not equally well evidenced: Unbrako has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 33% of Unbrako's written reviews are positive against 100% of KATO App's.

Unbrako ships an update every 3 weeks, KATO App every 9 months. The most recent releases landed on October 11, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Unbrako | KATO App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (5 ratings)](https://appshunter.io/ios/app/unbrako/id508313541/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kato-app/id1040959765/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 9 months |
| Monetization | Free | Free |
| Size | 77 MB | 52 MB |
| Requires iOS | 16.6 | **8.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Unbrako](https://appshunter.io/developer/508313544) | [KATO Fastening Systems](https://appshunter.io/developer/379001174) |

## What reviewers say

### Unbrako

[App page](https://appshunter.io/ios/app/unbrako/id508313541)

This engineering reference app provides engineers with detailed product information and terminology for high-quality fasteners. It offers easy access to dimensions, seating torque values for standard applications, part numbers, and contact information.

**Highlights:** Fastener product details, Engineering terminology, Dimensional data, Seating torque values, Part number reference, Contact details

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

**In-app purchases:** none


### KATO App

[App page](https://appshunter.io/ios/app/kato-app/id1040959765)

This app provides a powerful search tool for helical coil screw thread inserts and related tooling. It features a comprehensive database with multiple search options and detailed technical information for various industry standards.

**Highlights:** Comprehensive database of helical coil screw thread inserts, Four search options: Part Number, Style & Size, MS/MA, NAS/NA, Product and technical information lookup, Tooling suggestions (Air, Electric, Manual, Removal), Detailed technical specifications (dimensions, drill sizes, etc.), Compatibility with military and aerospace part numbers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Unbrako free?

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

### Is KATO App free?

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

### Which has better reviews, Unbrako or KATO App?

KATO App is rated higher. Unbrako averages 2.6 out of 5 from 5 ratings, while KATO App averages 5.0 from 1 ratings.

### Do Unbrako or KATO App have ads?

Neither Unbrako nor KATO App shows ads.

### Which is updated more often, Unbrako or KATO App?

Unbrako ships an update every 3 weeks, and KATO App every 9 months. Most recently, Unbrako was updated on October 11, 2026 and KATO App on October 6, 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.*