You can post the "unique" layout here. You get a tape measure, draw the room, all the walls, windows, openings passages and add the feet and inches,legibly. You upload that as a jpeg, and add it to a comment box.

As to "play around":

No app will inform "design genius". Baths are clearances , codes, function , beauty etc.

Show pictures of the bath, do the drawing accurately . Post it.

Most people do not know what they DON'T know. That isn't criticism, it's simply fact as it applies to the design of most things, but especially a bath

I have found the apps more hassle then they are worth, most a big learning curve and honestly I use a nice new sharp pencil a clean piece of paper and my drafting table for all my kitchens designs . If a client wants a 3D i can do that but usually I do elevstions of all the walls too. As for funiture I find a to scale floor plan and all the furnitures cut out in the same scale is faster and easier to do. I agree with Jan post the plan here and get a ton of free advice answer our questions here too in comments. Do not start a new post .

Thanks everyone for your comments! I'll try to put some pictures and a drawing with measurements in this post.

I really like RoomPlanner. Posting layouts for feedback is great too but we learned things through 3D walkthroughs that 2D plans didn’t capture. I also used it to create our plans and elevations for permitting. The apps are only as helpful as the information you put in, though, so either way you first need to map and measure (and then remeasure) your space.

Thanks for all your input. I don’t know how to do a scale drawing for floor plans. Do you know anyone who can help with that?

YouTube has tons of videos on how to do it. I just did a quick search and this series looks good https://youtube.com/playlist?list=PLCFLNkaXqWUNypcpU-AeCdCiOqIi4_q_R

This is easy

https://www.youtube.com/watch?v=V6GAKom_ZvI&list=PLCFLNkaXqWUNypcpU-AeCdCiOqIi4_q_R&index=3

When you're done? You will know the room by heart.

Tip? DON'T use a solid line for openings in the room, - use a broken line/

One more? Order yourself a scale ruler and get really comfortable with the 1/4 inch side. You will never need more than a piece of plain printer paper, a sharp pencil a 25 or 35 foot tape measure.

https://www.amazon.com/Mr-Architectural-Architect-Triangulare-Architecture/dp/B07XC3KLKW/ref=asc_df_B07XC3KLKW/?tag=hyprod-20&linkCode=df0&hvadid=385178050549&hvpos=&hvnetw=g&hvrand=7188032611508413917&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9051644&hvtargid=pla-1016556974072&psc=1&tag=&ref=&adgrpid=84171017008&hvpone=&hvptwo=&hvadid=385178050549&hvpos=&hvnetw=g&hvrand=7188032611508413917&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9051644&hvtargid=pla-1016556974072

Wholeheartedly agree above. Your brain, eye and hand: ) It's a lovely synergy.

I've no argument with those who can manipulate a program on a computer. I can't. I also find it's a brain drain for ANYONE not already very familiar with using a pencil and paper. Walk before you run. Understanding scale and space is like doing math in your head, long before there was a calculator on your phone.