# Apparent Wind Calculator — Calculate the apparent wind.

> Calculate the apparent wind. (iPhone/iPad app by Adam Harvey.)

- Source: https://appshunter.io/ios/app/apparent-wind-calculator/id6765800086 (this page in markdown: same URL + `.md`)
- Developer: [Adam Harvey](https://appshunter.io/developer/1890289893)
- Category: Navigation, Sports
- Price: $0.99
- Age rating: 4+
- Requires: iOS 15.1 · 25 MB
- Languages: American English
- Released: 2026-05-05
- Data updated: 2026-08-15
- User reviews in markdown: https://appshunter.io/ios/app/apparent-wind-calculator/id6765800086/reviews.md

## What is Apparent Wind Calculator?

Apparent Wind Calculator takes the maths out of one of sailing's most important concepts. Feed in your true wind angle, true wind speed, and boat speed — and instantly see your apparent wind angle and speed, visualised as a live vector diagram.

Whether passage planning, under sail or just getting your head around why the wind always seems to come from forward when you bear away, this app makes it immediately clear.

BOAT POLAR

Load a polar table and the app sets your boat speed automatically based on your true wind angle and wind speed. Built-in presets cover small, medium, and large monohulls and catamarans — or enter your own target speeds for a custom polar. With auto-fill enabled, every diagram you see reflects realistic performance numbers for your boat, not a guess.

FEATURES

• Live vector diagram showing true wind, apparent wind, and boat velocity as scaled arrows — updates in real time as you move the sliders
• Monohull and catamaran boat graphics that respond to your apparent wind angle
• Boat polar table with presets for monohulls and catamarans, fully editable
• Auto-fill boat speed from your polar for realistic results
• Point of sail readout — from Close Hauled to Deep Run
• Port and starboard tack display
• Works entirely offline, no account required

WHO IT'S FOR

Sailing students learning the theory, racers checking their VMG angles, cruisers planning passages, and coaches explaining wind shifts to crew.

The apparent wind is what your sails actually feel. This app helps you understand it.

## Chart rankings

- #184 in Top Paid · Navigation (US App Store)


## Version history (last 2 releases)

### 1.1.1 — 2026-06-30

• Added a dedicated catamaran view in the wind diagram
• Refreshed app icon and launch screen
• Streamlined the interface
• Minor fixes and improvements

### 1.0 — 2026-05-05

No release notes.

## Apps similar to Apparent Wind Calculator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [StarPilot](https://appshunter.io/ios/app/starpilot/id359071446) | 4.9 (8) | $49.99 | Navigation |
| [Helmsman's Kit](https://appshunter.io/ios/app/helmsmans-kit/id1220932986) | — | $1.99 | Navigation |
| [AnchorSafe - Anchor Alarm Pro](https://appshunter.io/ios/app/anchorsafe-anchor-alarm-pro/id6744550701) | 5.0 (3) | Free | Navigation |
| [MagVar](https://appshunter.io/ios/app/magvar/id1670958717) | 5.0 (1) | $0.99 | Navigation |
| [True-Wind Calculator](https://appshunter.io/ios/app/true-wind-calculator/id712909613) | — | Free | Navigation |
| [BEIDO MAP-Satellite Streetview](https://appshunter.io/ios/app/beido-map-satellite-streetview/id1574502941) | — | $0.99 | Navigation |

## More apps by Adam Harvey

- [HoldFast Anchor Alarm](https://appshunter.io/ios/app/holdfast-anchor-alarm/id6761567740)

All apps by Adam Harvey: https://appshunter.io/developer/1890289893

## Related topics

[apparent wind calculator](https://appshunter.io/ios/topics/apparent-wind-calculator)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*