10 different Knots in this Free / Trail Version! Video teaches you very simply the most important knots right! Suitable for sailing, boating, climbing and fishing. Training how to tie knots. by this popular app.——— Works offline too!- All Knots with optimized Videos for simple and fast learning. Each one with description!- 51 knots in the FULL Version! (+30 Knots in "Knot video Guide 2" = 81 knots possible!)- Without sound can be practiced discreetly.- sailing knots, fishing Knot, climbing Knot, stopper knots, loops, etc.——–The App supports 10 Languages:English, German, French, Spanish, Italian, Korean, Russian, Chinese, Japan, Arabic.