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  • Compatibility: Requires iOS or later.




  • The Best

    By Eddie/7
    When you’re on the job, you must calculate exactly where your plumbing finishes must go. It’s a beautiful thing.
  • Great tool 👍

    By !!bullet!!
    It’s a must have tool
  • Great product but

    By crkmb
    It keeps asking me for a review. Tired of that.
  • Subscription beware

    By Tim-Gray
    This app does the scam of making you pay to use it as a subscription. Stay away from it.
  • Awesome App

    By EJ111611
    I’ve had this version for a few years now and it still does has much more features than I even use. Makes calculating square footages a breeze and converting ft. To decimals basically effortless! You won’t be disappointed with the purchase of the full version for sure!
  • Delayed clicking sound

    By Dementior
    Absolutely, top-notch app and interface, but for some reason, the latest version has a click sound that is slightly delayed from when you hit the button, very annoying when inputting quickly.
  • Lay out man

    By Tainoa
    Love it.
  • Sad to be charged again

    By Clover isl. GC
    This app has been as much a staple in my life as tha physical calculator was befor it. Previous I have purchased this app and it has followed me from android phone to android and now I’ve switched to an apple phone and have learned than this app must be payed for annually, sad to purchase an already purchased app only to now pay annually. Very Disappointing
  • Great tool but yearly subscription

    By Ivan584
    The App and tool is great I would have given it all 5 starts but I will only use the trial version and then cancel. I can get a physical calculator for the same price and pay only once. Subscription is very expensive 39$ a year.
  • Love the Calc, hate the new format.

    By Ijnijvneijvfnijneijvef
    Great product. But PLEASE bring back the old design. The update appears chintzy and too small. Otherwise 5 stars.