# Installation Instructions vs Trelleborg Inspection Tool

The clearest difference is update cadence: Trelleborg Inspection Tool at every 4 months against Installation Instructions's every 11 months. Installation Instructions's advantage is iOS requirement (10.0 vs 13.0). On price, ads, 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.

Installation Instructions ships an update every 11 months, Trelleborg Inspection Tool every 4 months. Both last shipped on September 21, 2026.

## The numbers

| Metric | Installation Instructions | Trelleborg Inspection Tool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/installation-instructions/id720681644/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 4 months** |
| Monetization | Free | — |
| Size | 12 MB | 9 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Trelleborg Sealing Solutions](https://appshunter.io/developer/396863758) | [Trelleborg AB](https://appshunter.io/developer/423282462) |

## What reviewers say

### Installation Instructions

[App page](https://appshunter.io/ios/app/installation-instructions/id720681644)

This app provides visual guidance for the correct installation of various seals. It uses film, animation, and documentation to simulate expert installation, covering hydraulic, radial, and mechanical face seals, along with visual inspection and common mistakes.

**Highlights:** Hydraulic seal installation (rod/piston), Radial oil seal installation, Mechanical face seal installation, Visual inspection guidance, Common installation mistakes, Use of assembly tools

**Features:** macOS Compatibility

**In-app purchases:** none


### Trelleborg Inspection Tool

[App page](https://appshunter.io/ios/app/trelleborg-inspection-tool/id1529994193)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Installation Instructions free?

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

### Is Trelleborg Inspection Tool free?

Trelleborg Inspection Tool is free to download, with no in-app purchases.

### Do Installation Instructions or Trelleborg Inspection Tool have ads?

Neither Installation Instructions nor Trelleborg Inspection Tool shows ads.

### Which is updated more often, Installation Instructions or Trelleborg Inspection Tool?

Installation Instructions ships an update every 11 months, and Trelleborg Inspection Tool every 4 months. Most recently, Installation Instructions was updated on September 21, 2026 and Trelleborg Inspection Tool on September 21, 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.*