Comparison

Fender Online Tools vs InvertDark for Safari

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Fender Online Tools

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
Read full description

Trelleborg’s fender online tools provide users with a number of fender system options, which are suitable for varying applications and project requirements. The user can select the most suitable fender by applying filters to arrive at the most appropriate solution. A subsequent summary document is then produced. Further optimization of the fender system with respect to cost and performance can be done in consultation with Trelleborg’s experienced engineers globally. “The easy-to-use fender specification generator tool helps consultants to create a comprehensive, ready-to-use specification for the selected fender system, including testing and inspection plans for each and every component. Customized specifications for pneumatic and foam fenders can also be produced by adding relevant parameters under the fender specification generator tool.” The tools' capabilities include: -Berthing energy calculation -Fender selection tool -A Fender Specification Generator -A Bollard Specification Generator -A Fender System Selector for Ship-to-Ship Applications Trelleborg’s fender online tools have been developed in accordance with PIANC guidelines and British Standards, as well as American (ASTM) standard, to ensure best-in-class, compliant solutions. For more information about the online tools and to discover the enhanced features visit: https://bit.ly/2KRrndC

About

InvertDark for Safari

Transform any website into a dark theme with this Safari extension. It automatically applies a comfortable, eye-friendly dark mode for nighttime browsing without any setup. Enjoy clear videos and images while reducing screen glare.

Highlights
  • Automatic dark theme for all websites
  • No configuration required
  • Eye-friendly browsing
  • Preserves video and image clarity
  • Lightweight and efficient
Features
Read full description

This Safari extension is the simplest way to transform any website into a calm, dark theme, with no configuration needed. Once enabled, it stays active across your favorite sites, so you can browse naturally without adjusting settings. Have you ever been surprised by a blinding white page during late night browsing? Large, modern displays can feel especially harsh after sunset. This extension was created to solve that exact moment, keeping pages easy on the eyes while ensuring videos, images, and embedded content remain clear and natural. Designed to be lightweight and efficient, it runs quietly in the background without slowing down Safari. One action is all it takes to make nighttime browsing more comfortable.

Screenshots

Fender Online Tools4 screens
InvertDark for Safari1 screens

Verdict

The call

The clearest difference is price: Fender Online Tools at Free against InvertDark for Safari's $1.99. Fender Online Tools also leads on rating (5.0 vs 3.0) and iOS requirement (11.0 vs 16.6). InvertDark for Safari's advantage is update cadence (every 5 weeks vs every 6 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Fender Online Tools is free to download; InvertDark for Safari costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Fender Online Tools holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

Fender Online Tools ships an update every 6 months, InvertDark for Safari every 5 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
Fender Online Tools versus InvertDark for Safari: the parameters behind the verdict, then further details
ParameterFender Online ToolsInvertDark for Safari
PriceFree — better$1.99
Rating5.0 (1 ratings) — better3.0 (2 ratings)
Positive reviews—0.0% of reviews
Number of ratings12 — better
Update frequencyEvery 6 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS11.0 — better16.6
Further details — not scored
Size71 MB9 MB
Age rating17+4+
DeveloperTrelleborg ABhkitago

Customer experience

Fender Online Tools

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

InvertDark for Safari

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Fender Online Tools

No in-app purchases

None

InvertDark for Safari

No in-app purchases

Questions

Is Fender Online Tools free?
Fender Online Tools is free to download, with no in-app purchases.
Is InvertDark for Safari free?
InvertDark for Safari costs $1.99, with no in-app purchases.
Which has better reviews, Fender Online Tools or InvertDark for Safari?
Fender Online Tools is rated higher. Fender Online Tools averages 5.0 out of 5 from 1 ratings, while InvertDark for Safari averages 3.0 from 2 ratings.
Do Fender Online Tools or InvertDark for Safari have ads?
Neither Fender Online Tools nor InvertDark for Safari shows ads.
Which is updated more often, Fender Online Tools or InvertDark for Safari?
Fender Online Tools ships an update every 6 months, and InvertDark for Safari every 5 weeks. Most recently, Fender Online Tools was updated on November 3, 2026 and InvertDark for Safari on October 30, 2026.

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