Ying Wen Technologies

*** Don't like the 15 minutes refund policy set by Google? No problem. We will refund it within 24 hours as before. So please take your time to ev …

*** Featured on http://gizmodo.com/5562674/****** If you are interested in this tool, you may also be interested in Photographer's Field Tools. It …

Bubble level/plumb that supports camera preview, custom inclination for slope, pitch display, look and feel like a real bubble level, smooth bubble mo …

1. Beautiful steel or copper protractor/level.2. Two moveable protractor hands3. Camera mode to measure angles in camera4. Optionally display degree i …

#1 multiple tally counter app on the Play Store!You can use this app to count anything countable, from inventory, customers, laps, to scores, votes. U …

A great tip calculator that has rounding total or tip, uneven split among people, save as history and email features. optionally calculate tip includi …

********If you are interested in this tool, you may also be interested in Photographer's Field Tools. It has a distance ruler using map and many o …

1. Beautiful steel or copper protractor/level.2. Two moveable protractor hands3. Absolutely free, no ads. 4. Optionally display degree in pitch/percen …

Congratulations for entering the new exciting stage of your life! 2 easy steps to estimate the weeks of your pregnancy and due date; just enter the fi …

Best free bubble level without ads. It is absolutely free!Both 360 degree surface level/plumb and level bar, custom inclination for slope, look and fe …