iPad Clinometer: A friend borrowed my level some time ago and then accidentally moved with it. Since I only used the level when I needed to hang something, I have not replaced it and will use this app the next time a frame or shelf needs to go up. $1.99
Calcbot: While there are certainly many calculator apps out there for the iPad, what I like about this one is the design and calculation history tape, as I frequently lose my place during long calculations. $1.99
Best Timer: When my kitchen timer died as well as my microwave, I opted for an app timer replacement. The kitchen timer in this app is easy to read (much easier than the timer app on my iPhone) and reminds me of Tron in all of the best ways. $.99
Android Bubble Level: As you might have guessed, this is a simple, easy to use simulated bubble level. Free
Calculator Mem Pro: Unlike many of the other calculator apps for Android that I looked at, this one has a landscape mode as well as "ticker tape", which is great for keeping of track of where you are in your calculations. $1.99
Chef's Kitchen Timer: The best thing about this app has to be the multiple timers, which are perfect for when you need to time something on the stove and in the oven. Free
What apps do you find handy to have installed on your tablet for household tasks?
(Top Image: Joelle Alcaidinho, all others as linked above)