# Installation Instructions vs SiteSync Engineer Companion

The clearest difference is update cadence: SiteSync Engineer Companion at every 3 weeks 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, SiteSync Engineer Companion every 3 weeks. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Installation Instructions | SiteSync Engineer Companion |
| --- | --- | --- |
| 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 3 weeks** |
| Monetization | Free | — |
| Size | 12 MB | 5 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) | [Kyle McCotter](https://appshunter.io/developer/1733477833) |

## 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


### SiteSync Engineer Companion

[App page](https://appshunter.io/ios/app/sitesync-engineer-companion/id6478607173)

**In-app purchases:** none


## Frequently asked questions

### Is Installation Instructions free?

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

### Is SiteSync Engineer Companion free?

SiteSync Engineer Companion is free to download, with no in-app purchases.

### Do Installation Instructions or SiteSync Engineer Companion have ads?

Neither Installation Instructions nor SiteSync Engineer Companion shows ads.

### Which is updated more often, Installation Instructions or SiteSync Engineer Companion?

Installation Instructions ships an update every 11 months, and SiteSync Engineer Companion every 3 weeks. Most recently, Installation Instructions was updated on September 30, 2026 and SiteSync Engineer Companion on October 1, 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.*