uMark PDF Watermarker has two modes - Free and Pro. For the first 15 days after you install it, uMark will run in the Pro mode trial. You can test the full functionality of uMark during this period. After the expiry of the trial period, uMark will run in the Free mode with certain features disabled. You can continue using uMark PDF Watermarker in free mode for as long as you wish. If you like to make use of the Pro features you upgrade to the Pro mode.

Here's a comparison of the Free and Pro modes.

	Free	Pro
Batch size	5 Documents	Unlimited Documents
Watermark entire folder	✓	✓
Text watermark	✓	✓
Image watermark	✓	✓
Fully customizable watermarks	✓	✓
Save watermarks for repeat use		✓
Remove password from PDFs		✓
Protect PDFs with password		✓
Insert page number and other macros		✓
Price	Free	$29 Buy Now

Whether you are using the Free or the Pro mode, uMark never adds its own watermark other than the watermarks you add.