Next week is National Park Week! Starting this Saturday, April 21, through Sunday, April 29, all 397 units of the park system will waive their entrance fees, from Acadia to Zion and everywhere in between. The fee-free days make an already affordable vacation to America’s most spectacular places even easier on the wallet, at an ideal time for viewing wildflowers, birds, and waterfalls at many parks.

To help celebrate National Park Week, mobile app developer Chimani has announced that it will give away one million of its ten highly rated park guides for smartphones. If you’re planning a trip to one of the nine destinations featured in Chimani’s apps, it’s the perfect time to take advantage of free detailed maps, auto tour information, hiking guides, bus schedules, and other useful planning tools, which normally cost between $4.99 and $9.99 each. If you're considering a trip farther off the beaten path, their general guide for national parks is also free. All are available for iPhone and Android using the links on their website.

Safe travels, park lovers!