recommend a good maintenance app for cellphone

[ecr959]

Hi everybody. I like those apps that can keep track of gas mileage, oil changes, and if you need a part number or metric size for a part, you have all this info in one convenient spot, a cellphone app. I will get one soon, but first I wanted to hear from you veterans in this forum, maybe there is a good one you guys are already happy with. Share with me what you use. I have a Blackberry right now, But I might move to an Android phone, very soon. I'm a techie at heart, so I will understand any tech stuff you might know about.