If you’re an iPhone owner (or even if you’re not), you probably already know that Apple’s There’s an App for That ad campaign isn’t some overstated marketing slogan. With over 100,000 applications, there’s pretty much something for everything—or if not, it’s probably on its way.

But as the App store continues to grow, and applications fight for attention and exposure, it can be increasingly difficult to discover the best apps for a particular need, especially productivity-type applications that business owners might find useful.

So, to highlight a few that might make your day-to-day grind just a little more convenient, here’s our list of 10 Handy Apps for Small Business Owners (in no particular order):

1. iXpenseIt

Price: $4.99
Category: Finance

With what some iPhone users might consider a steep price for an app, iXpenseIt makes up for it by doing a good job of simplifying your daily expense tracking and monthly budgeting.

Taking a client to lunch that you’ll be expensing? This app lets you document the expense in seconds, and even stores photo receipts.

2. AT&T Virtual Receptionist

Price: Free
Category: Business

If your concerned that your businesses’ small size might scare off some customers, this app can help. With AT&T Virtual Receptionist, you get your own business phone system, with custom call forwarding, an auto-receptionist with company greeting, visual voicemail, and even 60 free toll-free minutes.

3. Dropbox

Price: Free
Category: Productivity

Once you start using it, you’ll see why Dropbox for iPhone is one of the most popular productivity apps available. Like a virtual drive that exists everywhere you need it, you can store, access, and share your files between your phone and any computer.

4. Scanner Pro

Price: $6.99
Category: Business

Straight out of a spy movie, Scanner Pro turns your iPhone into a portable scanner. Scan items such as documents, business cards, receipts, notes, and even whiteboards, then either email them or upload them to Dropbox.

5. Evernote

Price: Free
Category: Productivity

This brilliant little app sort of works like a personal assistant that follows you around and jots down all of your great ideas you. Easily create notes, snap photos, and record voice memos that you can later access from your iPhone, computer, or online.

6. Easy Task Manager

Price: Free
Category: Productivity

Don’t just make a to-do list on a pad of paper (what is this, the 80’s?), stay organized and get things done with the help of your iPhone and EasyTask Manager. It syncs up with your Mac or Windows computer, and even supports David Allen’s GTD (Getting Things Done) method.

7. UPS / FedEx Mobile

Price: Free / Free
Category: Business / Business

If your business ships items through either UPS or FedEx on a regular basis, these apps are a must have. Track packages, assign nicknames to shipments, find pickup locations or delivery times, and more.

8. mSecure Password Manager

Price: $2.99
Category: Productivity

I don’t know about you, but I have at least a dozen extremely important logins and passwords to remember at any given time, and if you’re a business owner, you probably have even more. mSecure Password Manager gives you a way to securely store your important information (via data encryption), like passwords or even credit card numbers.

9. Analytics App

Price: $6.99
Category: Productivity

A bit on the steep side in terms of price, this app quickly earns its costs if you’re regularly on the road or in a meetings when you need to check Google Analytics for your website stats. In fact, this app is probably easier to use than a web browser. Get a quick view of reports or drill into your site’s traffic data, all on the fly.

10. BeamMe

Price: Free
Category: Business

Run out of business cards at the conference (or forgot them at home)? This networking application lets you send your contact information to any phone or email address, and even integrates with Twitter, Facebook, and LinkedIn.

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So there you have it — just a few of many iPhone applications out there you might find handy. Have any that we didn’t mention? Let us know in the comments below.