# Fender Online Tools vs StealthESS

The clearest difference is update cadence: StealthESS at monthly against Fender Online Tools's every 6 months. 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.

Fender Online Tools ships an update every 6 months, StealthESS monthly. The most recent releases landed on October 15, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Fender Online Tools | StealthESS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fender-online-tools/id1503298239/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | Free | — |
| Size | 71 MB | 73 MB |
| Requires iOS | 11.0 | **10.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Trelleborg AB](https://appshunter.io/developer/423282462) | [Stealth Energy Technology Ltd.](https://appshunter.io/developer/1636797006) |

## What reviewers say

### Fender Online Tools

[App page](https://appshunter.io/ios/app/fender-online-tools/id1503298239)

This app helps users select and specify fender systems for various applications. It offers tools for calculating berthing energy, generating specifications, and selecting appropriate fenders based on project requirements and industry standards.

**Highlights:** Fender selection tool, Berthing energy calculation, Fender Specification Generator, Bollard Specification Generator, Ship-to-Ship Fender System Selector, PIANC and British Standards compliance

**Features:** macOS Compatibility

**In-app purchases:** none


### StealthESS

[App page](https://appshunter.io/ios/app/stealthess/id1636797004)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fender Online Tools free?

Fender Online Tools is free to download, with no in-app purchases.

### Is StealthESS free?

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

### Do Fender Online Tools or StealthESS have ads?

Neither Fender Online Tools nor StealthESS shows ads.

### Which is updated more often, Fender Online Tools or StealthESS?

Fender Online Tools ships an update every 6 months, and StealthESS monthly. Most recently, Fender Online Tools was updated on October 15, 2026 and StealthESS on October 30, 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.*