iPhone Screenshots


Carpenter’s Helper is an advanced construction calculator, capable of handling even the most demanding construction projects. With its easy-to-use layout & features, it blows expensive stand-alone construction calculators out of the water; and at a fraction of the cost!

Whether an experienced tradesman or novice DIYer, you will find Carpenter’s Helper the perfect companion for every project, in the office and in the field.


Carpenter’s Helper Lite is a Lite version of our full-featured CH Pro, and has the following features:

• Normal Calculations: Run equations (+,
-, *, /, %) just as you would on a
standard calculator.

• Unit Calculations: Easily calculate
linear, square & cubic measurements in
English (Yards, Feet, Inches, Inch
Fractions [up to x/64”]) & Metric
(Millimeters, Centimeters, Meters).

Convert between the different units
easily by selecting which unit you
would like to see the displayed value
converted to.

• E/M Toggle: Interchange easily between
the two unit modes with a convenient

• Back Button: Erase just one digit at a
time so you can fix & continue
calculations without having to clear
the entire screen.

• Pitch/Rise/Run/Diagonal: Store &
recall triangular measurements to
calculate roof pitch, rafter lengths,
stair lengths, and more. When any 2
values are stored, the other 2 are
generated automatically!

• Memory Bank: Store values with labels
to recall later in the same convenient
& visual format you’ve come to love in
the iPhone. (Limited to 3 items in the
Lite version)


Once you test out CH Lite and see how it functions in it's basic form, you'll definitely want to check out the additional features available in the Pro version...

• Memory Bank Export: Export your list
via Email to print as a cut sheet or
materials list!

• Projects:
Create lists of data (in Sq, Cu, Ln,
$, or Qty. formats) and store in
organized Projects. Useful for
take-offs, estimating, budgets,
material lists, etc. Lists can even be
tabulated to include running totals on
the bottom! And of course you can
export your Project data via email for

• Quick-Job: Graphical interface to
easily calculate all kinds of
construction projects, large or small.
With just a few known parameters,
Quick-Jobs will automatically fill-in
and calculate the rest of the project
for you.

All of these Quick-Jobs are included:

-Conc. Block
-Fencing (English-Mode Only)
-Decking (English-Mode Only)
-Wall Framing (English-Mode Only)
-Board Feet Calc. (English-Mode Only)


With Carpenter’s Helper, you’ll always have the calculating power you need on you, every time you need it. And with all of the additional features, you’ll be able to take estimating, take-offs, & on-site job performance to a whole new level!

What’s New

Version 2.0.1

* Fixed issue with Mem. Bank producing black screen when recalling values

* Higher-res icon for the iPad

Ratings and Reviews

3.9 out of 5
784 Ratings

784 Ratings

bobfreck ,


I’ve used the free version of this app for several years. A couple months ago, I went ahead and paid for the upgrade. It’s been a very good app, and I’ve been extremely happy with it. The author hasn’t updated the app to work with iOS 11 yet. I noticed the app hasn’t been worked on for seven years, and I also see that their domain is up for sale. I really hope the developer is not bailing.

AJP79 ,

Quick, Simple & Effective

Quick, Simple & Effective!!!!
Great for Decimal to Fractions
Metric/English Conversion to Fraction/Decimal & Vice-Versa.
I use it in precision woodworking. Taking a decimal x.000 to a fraction in a second.
A Perfect Example: Building Cabinet doors. Inserted panels rail and stile & Mortise & Tenon Joinery along with Center Accent stiles at an odd size. Im using standard Lumber / Measurements and when I use a Festool Domino Joiner ALL adjustments are in mm. Well with a click or two I set my tool instantly to match my standard measurements using the metric markings on the Festool.

Also Great for Fractional Math. This is one of my favorite Tools I mean App. When your moving at home or in a shop who has time to stop and add fractions convert them to decimals and divide into metric or standard numerals. I can do it with a pen and paper. But when you wanna keep moving its a quick and handy app. I have been using it since it was released and have been impressed with the easy to use capabilities since day one!!!

Glory72736 ,

It does conversions.

Works great! It does conversions, you just don't have a button for it. Simply touch inch, feet, etc. it will change the answer automatically.
I've paid alot for this in the past. This is awesome!
I almost didn't try it cause someone said no conversion button, this doesn't need one, its too smart for that :)


My Pie Interactive
1.6 MB

Requires iOS 3.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2009 My Pie Interactive


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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