# Fender Online Tools vs DDNotes

The clearest difference is update cadence: DDNotes at every 3 weeks against Fender Online Tools's every 6 months. DDNotes also leads on iOS requirement (9.0 vs 11.0). 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.

Fender Online Tools ships an update every 6 months, DDNotes every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | Fender Online Tools | DDNotes |
| --- | --- | --- |
| 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 | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 71 MB | 8 MB |
| Requires iOS | 11.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Trelleborg AB](https://appshunter.io/developer/423282462) | [Beijing SKYG Information Technology Co., Ltd.](https://appshunter.io/developer/1221868812) |

## 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


### DDNotes

[App page](https://appshunter.io/ios/app/ddnotes/id1571619254)

**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 DDNotes free?

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

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

Neither Fender Online Tools nor DDNotes shows ads.

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

Fender Online Tools ships an update every 6 months, and DDNotes every 3 weeks. Most recently, Fender Online Tools was updated on November 3, 2026 and DDNotes on November 3, 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.*