StackSocial cuts up to 83% off a selection of iOS apps, with prices starting at free. Deal ends April 16. A few best bets:

• Boxer for iPhone, iPod touch, and iPad for 99 cents (pictured, $5 off, email app)
• Day One for iPhone, iPod touch, and iPad for $1.99 ($3 off, journal app)
• Calendars 5 for iPhone, iPod touch, and iPad for $2.99 ($4 off, calendar app)
• click here to see the full selection of available apps