How many downloads does an iOS app need to get into the top charts in education?

Read also:

• Who was the actor least deserving of an Academy Award?
• Keyshawn Davis vs. Edwin De Los Santos canceled after Davis' massive weight miss, Abdullah Mason to headline - Yahoo Sports
• Exclusive | Nile Rodgers recalls becoming ‘really close’ with the late Sly Stone: ‘He was living in a car’ - New York Post
• Can relationship issues cause depression?
• Mondo Duplantis breaks pole vault world record for 12th time - NBC Sports
• Slash your biological age by up to 16 years by doing this one thing during your daily walk — new study says - Tom's Guide
• Scientists stunned to see humpback whales trying to send messages to humans - BBC Wildlife Magazine
• Did you use the internet during the DOS era? Can you describe your experience? How were images displayed on the black screen when everything was just text-based commands?
• S.W.A.T. Vet Jay Harrington Breaks Silence on EXILES Surprise: ‘I Did Not Have Spinoff on My Bingo Card’ (Exclusive) - TVLine
• The Gears of War Reloaded beta is here, what you need to know and how to play - Windows Central
• What is the funniest joke you've been told that you still think about to this day?
• Are fanservice-y characters (i.e. Lara Croft, Tifa Lockhart) immediately bad?
• What does it feel like when a guy cums in your ass?
• How do I remove the music from a movie or animation? I want to keep the audio from the dialogue and sound effects, but remove the music so that I can add my own.