What effects do Genua Cars, Backstays, Traveller and Halyard tension might have to your sails? A new App shows what happens when you are trimming the sail.

„Sailtrim upwind one“ ist the first fully animated sailtrim App now available on App Store. The application explains what happens when one is playing around with the various trimming functions on a sailboat.

The user can select the sail he wants to trim (mainsail or headsail). Then he gets a choice of different trimming functions which can be operated by sliders to either trim or ease the sheet virtually and can see the deformation of his sails and gets the information for what conditions (wind and waves) the current trim might be good for. To see and explore the moving sailshapes from different angles, the rigg can be rotated around its vertical centerline.

The new app „Sailtrim upwind one“ is focussing on all sailing enthusiast, beginners as well as experianced race sailors. The easy to handle application is particularly useful for sailing schools.

What's New

Version 1.02


Ratings and Reviews

Could be better


Some ideas for you.
How about adding a quiz mode. Enter wind/wave conditions then the user has to come up with the optimal trim.
The app should show how different trim impacts speed and pointing ability.
Also, I didn't notice any change in forestay sag when adjusting backstay.
This app has potential, however, currently not worth the money, should charge 99 cents.

Waste of $8


Most of us know what a halyard, backstay, etc. does. This offers 0 insight as to why you would use any of the techniques shown while trimming. It's just a mediocre animation of what moves when you pull the string. Save your money.

Not quite there

Biggles 1960

App makes assumptions that the operator knows what the symbols mean in the upper corner. Most do not, a guide would be helpful.

Bouncing between control selections and the sail is inconvenient, put them on the same page.

Needs to save trim adjustments once made so you can see how they interact with one another.

Not worth the $8 but has potential.


Nouveda GmbH
44.4 MB
Requires iOS 4.3 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Nouveda GmbH


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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