iPhone Screenshots



ServiceCalc cuts time spent and reduces errors when totaling invoices out in the field. This tool automates and displays the Labor, Parts/Materials, Tax, and Total. ServiceCalc is ideal for Locksmiths, Electricians, Plumbers, or any other service technicians that frequently write up invoices.

Conventional Method:

-Sub total line items on invoice
-Add up labor on a standard calculator
-Write down labor on invoice
-Clear the calculator's screen
-Add up parts/materials
-Write down on invoice
-Multiply tax rate
-Write down on invoice
-Clear calculator's screen
-Add labor, parts, and tax
-Write total on invoice

ServiceCalc Method:

-Sub total line items on invoice
-Add up labor and tap Labor button
-Add up parts and tap Parts button***
-Write down totals on invoice

***Parts are added per line. The timer is used to create a delay when making a single multiplication. This delay gives you enough time to read its subtotal to then transfer onto the invoice.***

After tapping Parts you can turn your iDevice sideways (landscape) for a larger readout.

Quickly add the desired labor by tapping the half hour or full hour buttons.

Two tax rates are configurable to allow multiple jurisdictions. The secondary tax rate can also be used as a tip calculator.

Built in flashlight function for illuminating your invoice.

3 Skins to choose from: Original, Blue Steel, and Magnum

Totals truncate to 2 decimal places. Tax is rounded up to the hundredths when the halfway point is a value of 5 or higher.


if tax = 2.775, actual tax = 2.78
if tax = 2.77445, actual tax = 2.78
if tax = 2.771, actual tax = 2.77

Compatibility: iPhone / iPod touch on iOS 8.0 or later and iPad on iOS 12.0 or later.

Found a bug? Something not working? Have a suggestion? Feel free to contact me via email: phil@locksmithapps.com

What’s New

Version 1.8

-Under the hood service to maintain a healthy running app

Ratings and Reviews

5.0 out of 5
2 Ratings

2 Ratings

AlmondMilkvsSoyMilk ,

This app has helped me in life.

This app has helped me build many things, mainly happiness though. Sometimes I take my phone in to the bathroom while I take a shower and the phone screen builds condensation. I no longer hold my breathe thinking about when the next awesome calculator will be released. I hope the developer is as handsome and strong as this app makes him/her out to be. I couldn't be happier with my purchase. I would also like to say there is a flashlight which helps me when I travel to dark places. One thing I would like to be added would be animal pictures for the buttons such as a dog instead of the + symbol. Other than that, A+++

gwbeats1122 ,

Saves time and cuts down on errors!

This app has cut the time it takes writing up invoices, which is quite useful! Having a flashlight built into the app is a plus too! I would recommend to any service employee who has to write up invoices on paper every day!

DreaDmii ,

Wow, what a time saver!

I get kind of excited every time I finish a job now cause it means I can use ServiceCalc again! I love this app, I feel so efficient and clever every time I write up an invoice, I get so excited it makes me want to show the customer too!

App Privacy

The developer, Philip Domenici, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer's privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


Philip Domenici
1.4 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

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