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To download Soulver from the Mac App Store, you need a Mac with OS X 10.6.6 or later. Learn More.


By Acqualia

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Soulver helps you do quick calculations and work things out. Use Soulver to play around with numbers, do "back of the envelope" calculations, and solve day-to-day problems.

Annotate your numbers with words, so that they make sense to you. Soulver picks out the numbers and calculates your answer as you type. Do calculations over multiple lines, and refer to previous lines, much like a spreadsheet.

Soulver is great for adding things up, doing all kinds of percentages easily, and converting things, like currencies. It's quicker to use than a spreadsheet, and smarter and clearer than a traditional calculator.

Key Features:

- A text editor for working stuff out & doing quick calculations.
- Use words amid your calculations so your numbers make sense
- Easily do percentages ("$120 - 10%", "30 as a % of 200")
- See a running total of all your lines
- Do easy conversions ("10 USD in Euros, "22 feet in meters")
- Do calculations with stocks ("100 AAPL")
- Refer to previous lines using tokens.
- Create variables to hold frequently used numbers
- All the standard mathematical functions.
- Support for calculations in binary & hex.
- Save your work & share it with the iPhone & iPad versions of Soulver.
- Export into PDF & HTML emailing.
- Support for Resume & Versions on Mac OS 10.7 Lion

2010 Mac Gem - MacWorld 4/5 Mice
2010 Mac OS X Ars Design Award: Runner up

“It reinvents the calculator, and in that process, I believe Acqualia have come up with a real piece of genius.” AppStorm

“Without a doubt the best digital calculator on the Apple platform.” SmokingApples

What's New in Version 2.5

- Compatibility with OS X 10.10 Yosemite.
- Soulver now requires 10.7 or later & 64-bit (most Macs released after 2006).


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Customer Reviews

Like using truly smart paper

I've been using the iOS version for a couple of years: it's been my favorite way to calculate scenarios such as budget forecasts or mortgage comparisons. These are tasks I don't do often, but when I do, Soulver makes them all the more bearable because it lets me jot down my thoughts in a way that's similar to what I'd do on a piece of paper, only with live calculations. The desktop version looks to make that process even more natural given the increased flexibility of having a full-size keyboard and the rich features available in Mac OS X and my other various utilities such as LaunchBar with its clipboard history. iOS <-> Mac OS X sync is a bonus, if an obvious one.

TL;DR—Soulver costs about the same as a classic Moleskine, and for calculation-based note taking, it's well worth the cost of its paper-based cousin.

Like having a Mathematica Lite

Very easy to pick up, especially useful for small tasks where Mathematica feels like overkill and takes too much to set up. Far superior to clicking buttons on a virtual calculator on your screen. Documents easily serve as guides for setting up spreadsheets, or larger Mathematica documents, or to simply share the work with coworkers or professors. Even if they don’t have Soulver, its Send to Mail feature generates a correctly formatted, editable table in the mail message that preserves line numbers, values and results.

The only reason I don’t give all five stars*: ratios of dimensions can occasionally lead to incorrect results. For example:
(20 g/L) / (5 g/L) correctly gives 4, but
(20 mg/L - 5 mg/L) / (20 mg / L) gives 750 L/meter^3
Although the answer is technically a correct answer (you can verify this in Wolfram|Alpha), the desired behavior is to instead cancel the units and not perform any scale conversions to fundamental SI units.

However, there is a workaround using the num() function to strip the units:
(num(20 mg/L) - num(5 mg/L))/num(20 mg/L) correctly gives 0.75
So, just be aware that this can happen, and know when to use the workaround.

*The developer is aware of the issue and is investigating.

A real calculator

I never understood the “calculator” apps that look like desk calculators: I have a keyboard in front of me, so why would I want to click on a number pad on the screen? Soulver drops the outdated interface metaphors and presents me with a functional tool that can take advantage of everything that a modern computer can do with a physical keyboard interface: it can store constants, do multi-line math, show calculations in an intuitive way like I’d do them on paper, include units, do conversions, etc. It’s exactly what a computer calculator app should have been all along.

View in Mac App Store
  • $11.99
  • Category: Productivity
  • Updated:
  • Version: 2.5
  • Size: 5.0 MB
  • Languages: English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish
  • Seller:

Compatibility: OS X 10.6.6 or later, 64-bit processor

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