Teavana’s tea timer has 4 buttons with present times for white, green, black/oolong, and herbal, and of course you can set your own times too.
Its available online at teavana.com. I think they also have one with a build in thermometer, but it doesnt have the preset times.
DavidsTea’s timer is kinda cute, but not as convenient.
A Perfect Cup of Tea app is very good, too. It comes with a lot of the common teas and suggested brew times and you can change those and add to the list. You can also make temporary changes to the saved times, say for when you wish to reuse the same leaves for a second pot, that then revert back to the saved setting next time you use it. I’ve been using it for not quite a year and find it works very well. And it’s free.
Good luck in your search.
I use the Teavana iphone app also. It has multiple settings and you can watch the “tea” settle to the bottom and the water get darker. Also the tea level moves a little if you tilt it. It lets you choose from eight tea types and you can change up the times quickly. Cute little tunes play when you are finished steeping.
Teavana has a decent app, although it’s built around their products. I use one on my iPad called Timer, or Minimalist Timer or something of the like. Steep.it is my favorite though (it’s a website). And Teavana offers one around $10 that I’ve never used but seems good enough.
“(it’s a website)”
BTW, with CloudBrowse you could also try the Online-Tea-Timer at your iPxxx. And you can use it at your Mac, your PC, your Palm, with Linux/Unix…
Additionally you could easily add the online tea timer to your own web site! Just have a look at:
I have one on my android called ‘Tea Tips’ that lets you customize widgets for different tea types. So, you can have a four minute widget named black, a 45 second widget named green, a three minute fourteen second widget named pi, the sky is the limit. It’s pretty nice.
This timer uses three different hour glasses and it’s cute>
I have seen other timers similar to this with the hour glasses on each side of a wooden block. those can probably be located fairly easily with a google search.