Trigonometrics

2.6 2.6 out of 5 stars | 224 ratings

Price: 0.99

Last update: 12-28-2024


Latest updates

What's new in version 16
  • Add Windows 11 Support

Product Details

Release Date: 2013
Date first listed on Amazon: April 23, 2013
Developed By: Kyle Fischer
ASIN: B00CGTNHXA
Customer reviews:
2.9 out of 5 stars223 customer ratings

Developer info

Product features

  • Create beautiful mathematical designs
  • Change size, location, patterns, and rainbow style with simple pinch, tap, and slide controls.
  • Save your creations to your device

Product description

A polar graph is a math concept where the distance r from the center of the graph is determined by an equation. (r=1 would be a circle. r=sin(angle) makes loops)
Polar Graph:
http://en.wikipedia.org/wiki/Polar_graph

Normally you start the angle from 0 and go all the way around to 360 degrees incrementing by some small amount. When you skip say every 80 degrees, you get something interesting. A Maurer Rose
http://en.wikipedia.org/wiki/Maurer_rose

Trigonometrics takes this maurer rose idea and puts you in control of every aspect of the design. The size, location, color palette, amount to skip, and a multiplier for the angle (to determine how many petals your maurer rose will have).

Change the size and location:
The first button allows you to pinch,tap, and drag to change the size/location. If you let go while pinching in, you can have the design continue to get smaller.

Change the rainbow:
There are basically 2 rainbow palettes. One cycles through all the colors in their proper rainbow order. The other will randomly meander from color to color. Continually pressing this button will give you different rainbow options.

Control the angle:
Press this button and pinching,tapping and dragging will modify the angle skip parameter.

Control the wave:
This button, with pinching, tapping, and dragging will allow you to change the number of petals your rose has.

Bomb Button:
This will clear the screen but keep all your properties.

Press the Menu button to save your image.

User Data Privacy

Developer has indicated that this app does not collect or transfer user data to third parties.

Technical details

Size: 7.4MB
Version: 16
Developed By: Kyle Fischer
Application Permissions: ( Help me understand what permissions mean )
  • Read from external storage
  • Write to external storage
Minimum Operating System: Android 2.3
Approximate Download Time: Less than 1 minute

Top reviews from the United States

Robert L. Simmons
1.0 out of 5 stars Pretty but useless
Reviewed in the United States on March 17, 2014
It looks great but I have no idea what you are supposed to do with all the geometric designs flowing on your screen. If there was more control, they could be used as backgrounds or art but there does not seem to be an intuitive way of designing new geometric pictures.
David L. Bump
4.0 out of 5 stars Mathematical Art at Your Fingertips -- Not for people with dull imaginations and little creativity
Reviewed in the United States on March 11, 2014
Hey, it's only a couple of bucks, are we all so spoiled by FAotDs? There aren't any in-app instructions, but who really needs them? There are only a few controls to learn, and the icons should give you a pretty good idea of what they do, and experimenting with them will do the rest. For me, trying one new little thing after another was a big part of the fun. At first I thought I would prefer to have instructions and exact, digital number control, but after messing around for awhile I think that doing it that way would be more like work and would not produce better results. It still might be a good option, for those seriously mathematically gifted or inclined. There is more information about the controls on the Amazon page of the app. I found it fun to pinch the design down, and then tap around it and create the appearance of a bouquet of mathematical flowers, or move it off-center, clear the screen, then drag the design around to paint a rainbow wreath. Try the different icons followed by different inputs - slide, tap, slide and tap, tap different places, slide in different directions, pinch, pinch and slide... A pulsating design can be truly hypnotic -- you may need to be careful if you're susceptible to seizures or anything like that. There certainly are a number of options that could spiff it up, like computer-generated music that alters with the changes in the math function. A window in a corner showing key values, a reset icon that would return the function to a simple, fixed pattern. But as I said, is a buck or two really that much these days? I got it free, but if you don't have one of these flowing artsy apps, and like playing around with ephemeral shapes and ever-shifting colors, it's not much of a risk to pay for it.
JohnAroundTheCornerReviews
5.0 out of 5 stars This is a beautiful image generator to let run when I'm charging
Reviewed in the United States on March 18, 2014
I bought this app in order to get the 280 free coins. (In other words, I made a 181 coin profit, I spent 99 coins to buy the app, then got 250 coins for buying my first eligible app, and 30 coins with the purchase of the app).

The trigonometric images are beautiful, though after awhile, it's hard to see where the images were regenerating. It might help to occasionally erase the screen and let it start filling the screen all over again.

The meaning of the buttons at the side of the screen are not obvious to me, but since I didn't buy the program to use the buttons, but to enjoy the art, I can't fault the program for not being obvious.

It would help if there were a help link to explain some purposes of how we can use the program.

BUT the program is worth five stars (or five coins??) just for the beautiful artwork, which is why I got it in the first place.
mil
3.0 out of 5 stars if you could slow it down, or stop it, or undo a choice or three...
Reviewed in the United States on March 10, 2014
Or even if you had some choices made clear...this app might be okay - but you can't do any of that, so it is rather like a runaway rollarcoaster that seems to have no point. I do not like runaway rollarcoasters.

Although it makes some pretty designs, this app mostly does what it wants, not what you want - right off the bat. If I wanted something like that I would own an iphone, -not an android. If you could think out your design options before it "takes off" then that would be a great improvement. Being allowed to eliminate the " color" white would be another improvement.

I just don't get what the dev was aiming at here.

I can get any variation of spirograph pic off the web - With no app taking up space on my phone. Or I could have an app that makes pretty designs in the colors of my choosing, in the size and variations I want, at the speed I want. This is not what I got with this app ( but would like to see). It is like the app is somehow unfinished.

I gave 3 stars because I want to see the dev
Refine this Into something fantastic. I know this can happen, so show me!
marc
1.0 out of 5 stars Neat Idea, Feels unfinished
Reviewed in the United States on March 15, 2014
It barely runs on my S4, is laggy, and is missing the options I would want. not much entertainment here, seems like more of an exercise in programming for the author.
Jen O.
2.0 out of 5 stars App makes pretty spirgraphs..by itself
Reviewed in the United States on March 10, 2014
I just downloaded Trigonometrics as the FAOTD. I think at this point, the name is more interesting than the app itself.

When the app opens, it automatically starts filling the screen with a spirograph. You can attempt to be interactive with it by touching the screen, but it's kinda pointless on a small phone as the screen fills so fast. Since the spirographs are
auto-generated, the mystery buttons at the bottom of the screen only add to the "chaos." While it's possible to clear the screen with the last button on the right, this only lasts a few seconds before the app generates a new spirograph.

I will have to trust other reviews in terms of adware/analytics as I have no way to test that aspect of the app. It appears that the developer has not included anything that would invade your privacy.While that's a refreshing change for the FAOTD, the developer also did not include any instructions as to the point of those cute little buttons. I have many drawing apps that I have to figure out what the buttons do on my own. The difference, however, is that I am the one generating the design at my own pace. I can see the changes made by pressing each button. This app fills the screen so fast with the spirographs, pressing the buttons only adds to the mess.

Trigonometrics would be so much more fun if you could actually create the spirograph without the app doing it automatically. The lack of explanation of the buttons would be forgivable if you had time to see what the different nuances are with each button press. I'm hoping the developer will improve upon this app, but until then, I will play with the spirograph app I got for the kids. At least then I can draw my own designs.

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